RE: [biofuel] Re: Pump Washing of biodiesel

2004-09-03 Thread ardis streeter


--- dermot [EMAIL PROTECTED] wrote:

 Thanks everybody for the replies. 
 I mixed the methoxide with the wvo by gradually
 letting the pump suck it from a carboy as the wvo
 was being pumped through the processor.
 I'm fairly happy that there was good mixing because
 of the tests I did after I made the biodiesel.
 Remember that I reprocessed the biodiesel a second
 time and got no glycerine fall out indicating that
 all the product had reacted.
 I also did the share test and got a clear
 separation.
 
 I'm fairly sure at this stage that my problem is
 that too vigorous pumping produces mayonnaise even
 if the biodiesel has reacted fully.
 
 I am going to try another 50 litre batch and I will
 use a motorised stirrer this time.
 Has anybody got any idea about the diameter of
 impellor I should use and what rpm to use?
 I'm going to use a 200 litre plastic barrel to do
 the washing.
 
 Thanks everybody again for the help/suggestions.
 
 Dermot
Hello Dermot, I think that using an agitator that
turnes at 30 to 60 r.p.m. should work nicely. I am
building a processor with a wash tank with over 400
u.s. gallon capacity and am using a bulk tank
adgitator  I purchased used from a dairy farm
supplier.My adgit ator is aprox. 14 inches wide and 14
inches high.If your system is smaller just down size
some.With an adgitator you can let it run as long as
it takes to mix the biodiesel and water wash. I will
be setting mine up with a timer so it will shut itself
off when it's   done. Good Luck||  
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
 Sent: 02 September 2004 10:58
 To: biofuel@yahoogroups.com
 Subject: RE: [biofuel] Re: Pump Washing of biodiesel
 
 But isnt the mixing period long enough? Say you mix
 for a whole day would it still be uneven?
 What im really asking is this caused because of
 mechanical factors or because a chemical reaction
 takes place, too much methroxide exposed to too
 little oil...
 Just trying to get a better understanding of things.
 
 Thanks for your time
 
 -- original message --
 Subject:[biofuel] Re: Pump Washing of
 biodiesel
 From:   bioveging [EMAIL PROTECTED]
 Date:   01st September 2004 7:9:3
 
 The idea of methoxide mixing is to introduce it at a
 rythm that will
 ensure even distribution throughout, so if you jet
 it all in at once
 it might not get evenly distributed and that might
 leave some oil
 unreacted, IMO.
 
 L.
 
 --- In biofuel@yahoogroups.com, Greg  Harbican
 [EMAIL PROTECTED]
 wrote:
  What about when you first mix the methoxide with
 the veggie oil,
 is there such a thing as  mixing them to violently
  because of
 having to powerful a pump?
 
  Greg H.
- Original Message -
From: dermot
To: biofuel@yahoogroups.com
Sent: Wednesday, September 01, 2004 07:03
Subject: RE: [biofuel] Re: Pump Washing of
 biodiesel
 
 
 
I think, as you rightly suggest, that my pump is
 too powerful
 and that the
mixing is too violent.
 
Thanks for you input.
 
Regards
Dermot
 
-Original Message-
From: bioveging [mailto:[EMAIL PROTECTED]
Sent: 01 September 2004 02:46
To: biofuel@yahoogroups.com
Subject: [biofuel] Re: Pump Washing of biodiesel
 
OK, I am no pro at this but even I can see a
 couple of points.
 Why
bring it up to 130C ? Did it need dewatering or
 was it just a
precaution? A sample test in a saucepan brought
 up to temp would
have confirmed it one way or the other.
I have made BD using some really crappy WVO
 which titrated at
10gr/liter and washed it using a paint stirrer
 and it tunred out
 OK.
The procesing temp is too high in your case.65C
 will boil off the
methanol which goes vapour at about 64C. Your
 processing temp
 should
not be over 55C (130F). Too high or too low will
 result in poor
 end
product.( I know, I've done it)
2HP pump huh? Wow ! Bet that thing hums huh?
 Might be a bit too
 much
for such a small amount though, although someone
 else will have
 to
comment of that as I am not in the know on it.
 There has been
 talk
of a 1/2 HP pump for 200gal (757liter) going for
 half an hour and
oing the job.
Are you using a good scale? How about PH
 measuring method? All
potential variables that can cause trouble.
I am thinking though that your biggest problem
 had to do with the
processing temperature being too high causing a
 loss of methanol.
 
Anyway, that is only mytake on it, maybe someone
 with more
experience can be more helpful
 
L.
 
--- In biofuel@yahoogroups.com, dermot
 [EMAIL PROTECTED] wrote:
 I would appreciate any suggestions or help
 from people who have
experience
 with washing biodiesel by using a pump. I have
 tried
unsuccessfully to do it
 and have ended up with about 50% mayonnaise.

 Here's what I did:

 I heated the used oil, which was over a year
 old, to 130
 degrees
centigrade
 for 

Re: [biofuel] Old propane tanks

2004-09-03 Thread Greg Harbican

Thought about that one.The best one I have heard so far, is to get the 
proper connectors, and hook the 100 lb bottle to the propane grill that came 
with the house ( I could be grilling for a year with what's left in the 2 100 
lb, bottles ) or rent an industrial propane heater and just burn it off.

I will admit, those little propane hand torches come in real handy, maybe I 
could find the connectors and hose to use the big bottle with the little torch. 
 That way I could use the propane to braze the parts together to make the 
BioDiesel reactor, it is not like I don't have a couple of extra of the 100 lb 
bottles, LOL.

Greg H. 
  - Original Message - 
  From: Doug Foskey 
  To: biofuel@yahoogroups.com 
  Sent: Thursday, September 02, 2004 15:23
  Subject: Re: [biofuel] Old propane tanks


I have used this to refill small camping cylinders. This process needs to 
be 
  performed in a well ventillated area, away from flames, etc. Perform this at 
  your own risk.
  If you can get the valve open, it may be possible to decant into another 
  empty bottle. To achieve this, it would be necessary to make a link 
  pipe/fittings so the tank to be emptied is upside down over the tank to be 
  filled. The liquid gas will then flow from the top bottle, into the bottom 
  bottle, once both valves are open,  the vent is loosened, the liquid propane 
  will flow into the lower bottle.


  regards Doug

[Non-text portions of this message have been removed]




 Yahoo! Groups Sponsor ~-- 
$9.95 domain names from Yahoo!. Register anything.
http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




[biofuel] Diesel and biodeisel

2004-09-03 Thread J Young

I'm looking to purchase a new(or newer Jeep) in the near future. 
I've seen that Jeep is now coming out with a new diesel version of 
the Liberty.
My co-worker said that diesel car produce more pollution then 
regular gasoline vechiles. I thought it was opposite, which is true?
Also, I live in an urban area and would like to eventually wean off 
gas and into biodiesel. Are biodiesel sources in urban areas 
(particularly in the DC metro area) readily available?




 Yahoo! Groups Sponsor ~-- 
$9.95 domain names from Yahoo!. Register anything.
http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




[biofuel] Re: pump size

2004-09-03 Thread bioveging


The one many people here use, and is also the one I use, is found at 
Northern Tools:
www.northerntool.com Item# 109955 It is 110V and 1/2HP. This is my 
primary reactor pump. I am going to try out a Pony Pump from the 
same place, Item# 109730, that I just got tonight as a wash pump and 
filter pump (the one I use to get the BD from the wash tank through 
the filters after it's final wash)
1/3HP should work fine, IMHO, and the 1 inch connections are the 
same as the Clear Water Pump mentioned above.Just do the necessary 
plumbing and have at it.
The only problem you will have to be aware of is if you use NaOH as 
a catalyst as it may want to harden as it cools and this can be a 
problem in pumps and the lines. I have done away with the potential 
of this happening, after reading comments from Todd and G-Mark about 
isolating the pump and draining the lines once processing is 
complete. I have successfully done this with my unit and as an 
unexpected bonus it also provided me with a sample for quality 
testing while the main mix settles.
There should be pics and explanations available as soon as the 
schedule permits.

L.


--- In biofuel@yahoogroups.com, [EMAIL PROTECTED] wrote:
 Between all the exchange between some of our members, I lost sight 
 of the ideal pump size  strength for mixing a 45 gallon drum of 
 home brew (filled to 30 gal)
 
 Right now I have a 1/3 horse 1 pump. I am about to connect to my 
 reactor.
 
 Is this in-/overly/perfectly adequate?
 
 
 Pierre




 Yahoo! Groups Sponsor ~-- 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 






[biofuel] Source for rapeseed SVO

2004-09-03 Thread middlepoint


Does anyone have a good source for rapeseed oil preferably in the 
Northwest. Thanks Scott




 Yahoo! Groups Sponsor ~-- 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 






[biofuel] Question - efficiency of sunlight conversion

2004-09-03 Thread Donald Allwright

I have a question that some of you might be able to shed some light on.

As well as having an interest in biofuels, I also have an interest in
Third World development issues and other technologies, including Solar
energy collection and storage. So when trying to find an 'energy
solution' for a remote village for example, there are a number of
possible options. Of course, you have to ask, what problem are you
looking to find a solution for? For the purposes of this post, I will
assume that we are trying to provide electricity to power
refrigerators, lighting, miscellaneous equipment such as telephones and
computers (even remote villages can have satellite connections to the
internet these days!). This would be a light load and not include
industrial use nor electrical heating/cooking.

So I will propose two solutions, both of which are used in various
places:

1) Grow an oil crop, use it to power a diesel generator
2) Install photovoltaic solar panels and use a battery system to store
the energy overnight

Now I'm trying to get an understanding of the pros and cons of these
two approaches, and which would be better for a particular location.
The issues I have thought of so far are the following:
--
Photovoltaics and batteries are expensive in terms of capital outlay,
whereas biofuels are cheap to 'install'.

Photovoltaic systems have a conversion efficiency of ~10% of the solar
energy, whereas biofuels have a conversion efficiency of about 1%

Photovoltaic systems require more specialist knowledge to maintain,
whereas biofuels require less.

Photovoltaics require low labour input once they are installed, whereas
biofuels require planting, harvesting, processing etc..

Photovoltaic systems can store only small amounts of energy over short
timescales, whereas you can store large quantities of oil for a long
time

Photovoltaics make less sense when sunshine levels are highly
unpredictable, whereas biofuel crops are not significantly affected by
a few gloomy days

Photovoltaics require less land to install than oil crops, because of
their higher conversion efficiency.
--

I realise that this is an oversimplification of the issues, and I'm
trying to gain a deeper understanding of the secondary issues. So my
specific questions are:

1) What are the implications of manufacturing Solar collectors,
batteries, electronic control equipment and so forth in terms of energy
use, toxic materials (e.g. lead in batteries), sustainability? How does
this compare with manufacturing a diesel generating system?

2) Biofuels are often produced from crops that are grown in an
unsustainable manner. What are the effects on biodiversity of this? How
can this be counteracted? Are there any comparable environmental issues
in the manufacture of solar systems?

3) Do the levels of expertise required to install and maintain a solar
system make it inappropriate for use in remote villages?

4) Am I correct in assuming that the best (cheapest over all) solution
for a Diesel generator in such situations is to use SVO (straight
vegetable oil) with a preheating system, rather than converting it to
biodiesel?

5) What are the effects on electricity usage patterns for each type of
supply? For example, if people know that their battery system can only
store a fixed amount that won't be replenished until the next day, are
they more efficiency conscious than if they know their supply won't be
replenished until next year's harvest?

My gut feeling is that due to the higher conversion efficiency of solar
panels, these would make a better overall solution for providing
electricity than growing biofuels, with less environmental impact
overall. However the high capital cost may rule this solution out for
smaller villages. (Of course if you are using the energy for transport,
then biofuels are much better because the energy can easily be stored
and transported over long timescales. But that is not what I'm
interested in here).

Does anyone have any other information, opinions, experience of these
types of systems? Have I overlooked any significant arguments on either
side?

I may soon have an opportunity to visit a remote solar installation
that is backed up with a Diesel generator (as far as I know using
petrodiesel) so wish to find out as much as possible beforehand.

Regards,
Donald


=
--
43 - slightly more than the answer to life, the universe and everything.





___ALL-NEW Yahoo! 
Messenger - all new features - even more fun!  http://uk.messenger.yahoo.com



 Yahoo! Groups Sponsor ~-- 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:

[biofuel] Re: Diesel and biodeisel

2004-09-03 Thread bioveging

I believe you will find even though diesel may smoke somewhat more 
than petrol that the actual emmissions are less toxic with standard 
diesel than there are with petrol.
That said, yes there is a source near you where biodiesel can easily 
be found, it is in your garage :) Learn to make your own, it is not 
that difficult, although it requires some dedication to the task and 
determination to do it right. All the information you need can be 
had via http://journeytoforever.org/biodiesel_make.html and the 
members of this list are always happy to offer any technical help 
when you run into snags (and there will be some), so check out the 
procedure, have at a test batch to get a feel for it and select the 
type of reactor you want to make and go to it.
Don't try to cut corners but rather keep at it methodiccally and you 
will be able to do it. I did, and am VERY happy that I did at that.

L.

--- In biofuel@yahoogroups.com, J Young [EMAIL PROTECTED] wrote:
 I'm looking to purchase a new(or newer Jeep) in the near future. 
 I've seen that Jeep is now coming out with a new diesel version of 
 the Liberty.
 My co-worker said that diesel car produce more pollution then 
 regular gasoline vechiles. I thought it was opposite, which is 
true?
 Also, I live in an urban area and would like to eventually wean 
off 
 gas and into biodiesel. Are biodiesel sources in urban areas 
 (particularly in the DC metro area) readily available?




 Yahoo! Groups Sponsor ~-- 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




RE: [biofuel] Biodiesel in Thailand.- Biodiesel is irrelevant without an abundant feedstock.

2004-09-03 Thread kok fong lau


Hi Peggy,

Do you have any reference or web links to the process?
It would be another interesting area to look at.

Hi Peter,

Just got back.  I think that Cambodia is a really good
target.  Since as you said there's no oil refinery
there.  My initial gut feeling was that BD can be
developed in Vietnam also.  But I have since found out
that Vietname has just constructed an oil refinery and
it should begin operational soon.  I hope that your
venture in Cambodia will be successful.  Do keep us
updated.

God Bless,

Caleb
--- Peggy [EMAIL PROTECTED] wrote:


-
Hello Peter,

It is possible to make fuel ethanol from discarded
paper and food waste
(non-dairy and no meat) making fuel ethanol another
alternative to
biodiesel as well.

Peggy


Hi Caleb ;;

I agree with you 100% about used frying oil being a
questionable feedstock.  There simply isn't enough of
it to make any significant business out of it, and it
is spread out over a large geographic area.  Yes, sure
the backyard tinkeres can make a go of it.  But as
soon as you start to buy any significant quantites,
the price will surely rise, plus you have significant
collection costs.

You can estimate the available quantity by trying to
think about how much frying oil you personally use,
then add in some extra to account for the fried donut
or fried chicken that you ate at  the restaurant. 
Then compare that to how much diesel you use.  Then
add in the diesel used for your electricity, all the
transportation costs to bring your food to the
supermarket, ect.  For me I use about 100 times more
diesel than frying oil.  So then we could roughly
estimate that if a city uses for example 1 million
liters of diesel a month, there would be 10,000 liters
of used frying oil.  But only a small fraction could
be recocovered (you couln't recover the used frying
oil that I personally use, for example).  

My conclusion is that a very small number of people
could make it work, but as soon as a few more people
try, supplies will dry up.  That's why biodiesel is
irrelevant without an abundant feedstock.  Please
don't forget about all the people dying, being killed,
destroyed lives in the middle east over oil wars. 
Then add in the huge cost in military hardware, all
the lost productivity of the men figting instead of
working, and I'm not so sure that the cost of diesel
is lower than the cost of biodiesel made from palm
oil.

Yes Malasia is the world leader in palm oil
plantations, so this would not interest you.  But
Cambodia has no oil plantation and no oil wells
either.  They are net importers of both commodities. 
So they are very interested in both possibilities.

Yes please keep me infomed about the BioFuel
conference in December.

Best Regards,

Peter G.
Thailand

--- kok fong lau [EMAIL PROTECTED] wrote:

 Hi Gaug,
 
 Thanks for replying.  I'm based in Singapore, but I
 come from Malaysia.  In Malaysia there are plenty of
 palm oil plantations.  The industry is well
 established.  There was a push for BioDiesel back
 during the 2002.  But since then Palm oil prices
 have
 risen by almost 100%, which makes it more profitable
 at the moment to export it overseas as cooking oil
 than to convert it to biodiesel for local
 consumption.
  Though rising oil prices might actually reverse all
 that.
 
 Diesel prices in Malaysia is far too cheap. 
 According
 to the latest prices, we're the second cheapest
 after
 brunei.  So pushing for BioDiesel is going to be
 hard
 in Malaysia.  Plus we're a net exporter of crude
 oil.
 
 I have plans as you to perhaps develope a small
 biodiesel industry in Singapore based on used
 cooking
 oil.  Still doing a lot of ground work at the
 momement.  Singapore is moving towards euro IV
 emission standards, and biodiesel can help offset
 some
 of the cost of migrating to euro IV disels here. 
 Initial investigation into used cooking oil as a
 feedstock here, indicate that it might not be a
 reliable source of feedstock.  However we are not
 giving up hope yet.
 
 Yeah the Thailand BioFuels forum is way to
 expensive. 
 There's another one coming in december.  This time
 it's going to be organized by MPOB from Malaysia . 
 I
 might pop over and take a look if I'm free.  I'll
 get
 more details for you if you are interested. 
 
 Caleb
 
 --- Guag Meister [EMAIL PROTECTED] wrote:
 
 
 -
 Hi Caleb ;
 
 Thanks for your kind email.  I posted it back to the
 list because you never know who is out there who
 could
 help you.  Yes I live about 30 minutes north of
 Bangkok.  I have lived here for over 10 years.  I am
 a
 techno type, with experience in many areas
 (electronic
 circuit design, mechanical machine design, pcb board
 manufacturing, analysis laboratory).  The thing
 about
 renewable energy is it almost never pays the bills. 
 Unfortunately, the people most interested in
 renewable
 energy are cheap charlies (sorry list members). 
 That
 includes me.
 
 I have always had a gut 

[biofuel] OT Estate planning

2004-09-03 Thread Kim Garth Travis


Greetings,

Garth and I are trying to figure out what to do with our American estate if 
something should happen to us.  Our family is taken care of with our 
Canadian assets, so we have some finances that would be looking for a good 
home.  We have decided where some of it should go, but we are having 
trouble thinking of worthy places to leave it.  I would like to hear 
suggestions from the members of this list as to where they would leave the 
money and why they would pick that place.  This discussion could be off 
list, if this is not a topic of interest to most, but I do believe that 
trying to make this world a better place is what this list is all about.  I 
don't have to be here to do so.

Bright Blessings,
Kim



 Yahoo! Groups Sponsor ~-- 
$9.95 domain names from Yahoo!. Register anything.
http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 






Re: [biofuel] pump size

2004-09-03 Thread Appal Energy


Pierre,

Use what you tools you have and adjust your reaction time accordingly.

If the manufacturer's specs are available to you, check the rated gph of the
pump at 3' of head pressure. Then multiply that volume by ~60% due to
reductions caused by pumping a fluid far more viscous than water, which is
what the specs will probably refer to. Divide that volume by the volume in
the reactor and you've got a very crude guestimate of the number of
turnovers per hour in your reactor.

To judge an appropriate reaction time, pull an exact amount of fluid (200 ml
would suffice) out of the reaction stream every half-hour or hour after an
arbitrary initial ~1 hour reaction period.

Presuming that the contents of the reactor are kept homogenous from the pump
flow, the volume of the glycerol cocktail that settles out of each sample
will give you a fair gauge as to when your reaction completed.

The suggestion would be to continue the reaction for ~1/2 hour beyond the
point where your glyc cocktail volume stabilized.

Todd Swearingen

- Original Message - 
From: [EMAIL PROTECTED]
To: biofuel@yahoogroups.com
Sent: Thursday, September 02, 2004 5:26 PM
Subject: [biofuel] pump size


 Between all the exchange between some of our members, I lost sight
 of the ideal pump size  strength for mixing a 45 gallon drum of
 home brew (filled to 30 gal)

 Right now I have a 1/3 horse 1 pump. I am about to connect to my
 reactor.

 Is this in-/overly/perfectly adequate?


 Pierre





 Biofuel at Journey to Forever:
 http://journeytoforever.org/biofuel.html

 Biofuels list archives:
 http://infoarchive.net/sgroup/biofuel/

 Please do NOT send Unsubscribe messages to the list address.
 To unsubscribe, send an email to:
 [EMAIL PROTECTED]
 Yahoo! Groups Links









 Yahoo! Groups Sponsor ~-- 
$9.95 domain names from Yahoo!. Register anything.
http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 






Re: [biofuel] Re: pump size

2004-09-03 Thread Appal Energy

L,

 The only problem you will have to be aware of is if you use NaOH as
 a catalyst as it may want to harden as it cools and this can be a
 problem in pumps and the lines. I have done away with the potential
 of this happening, after reading comments from Todd and G-Mark about
 isolating the pump and draining the lines once processing is
 complete. I have successfully done this with my unit and as an
 unexpected bonus it also provided me with a sample for quality
 testing while the main mix settles.

You cannot rely upon a sample being pulled from the pump as being an
accurate sampling. While the pump may be circulating fluid at what appears
to be sufficient volume to achieve homogeneity, glycerol remains heavier
than the esters and the pump is continually pulling off the bottom.

The reality could easily be that you're pulling off a higher ratio of the
glyc coctail via the pump sample than you might from a top or mid-range
sample. The fuel portion should theoretically be similar, but the glyc to
fuel ratios may be different.

Todd Swearingen

- Original Message - 
From: bioveging [EMAIL PROTECTED]
To: biofuel@yahoogroups.com
Sent: Thursday, September 02, 2004 10:09 PM
Subject: [biofuel] Re: pump size



 The one many people here use, and is also the one I use, is found at
 Northern Tools:
 www.northerntool.com Item# 109955 It is 110V and 1/2HP. This is my
 primary reactor pump. I am going to try out a Pony Pump from the
 same place, Item# 109730, that I just got tonight as a wash pump and
 filter pump (the one I use to get the BD from the wash tank through
 the filters after it's final wash)
 1/3HP should work fine, IMHO, and the 1 inch connections are the
 same as the Clear Water Pump mentioned above.Just do the necessary
 plumbing and have at it.
 The only problem you will have to be aware of is if you use NaOH as
 a catalyst as it may want to harden as it cools and this can be a
 problem in pumps and the lines. I have done away with the potential
 of this happening, after reading comments from Todd and G-Mark about
 isolating the pump and draining the lines once processing is
 complete. I have successfully done this with my unit and as an
 unexpected bonus it also provided me with a sample for quality
 testing while the main mix settles.
 There should be pics and explanations available as soon as the
 schedule permits.

 L.


 --- In biofuel@yahoogroups.com, [EMAIL PROTECTED] wrote:
  Between all the exchange between some of our members, I lost sight
  of the ideal pump size  strength for mixing a 45 gallon drum of
  home brew (filled to 30 gal)
 
  Right now I have a 1/3 horse 1 pump. I am about to connect to my
  reactor.
 
  Is this in-/overly/perfectly adequate?
 
 
  Pierre





 Biofuel at Journey to Forever:
 http://journeytoforever.org/biofuel.html

 Biofuels list archives:
 http://infoarchive.net/sgroup/biofuel/

 Please do NOT send Unsubscribe messages to the list address.
 To unsubscribe, send an email to:
 [EMAIL PROTECTED]
 Yahoo! Groups Links











 Yahoo! Groups Sponsor ~-- 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




Re: [biofuel] Question - efficiency of sunlight conversion

2004-09-03 Thread Hakan Falk


Donald,

One very important part for biofuels that you forgot, is the positive 
effect on job creation and the village economy. It is possible reselling 
and creation of income for the village. Maybe the following can give you 
more ideas.

http://www.undp.org/seed/energy/contents.html

Biofuel will also open up the possibility to use it for transportation, 
work, water pumping, etc. Its labor input is not a negative, it is a 
positive, since it is local.

Hakan

At 11:20 AM 9/3/2004, you wrote:
I have a question that some of you might be able to shed some light on.

As well as having an interest in biofuels, I also have an interest in
Third World development issues and other technologies, including Solar
energy collection and storage. So when trying to find an 'energy
solution' for a remote village for example, there are a number of
possible options. Of course, you have to ask, what problem are you
looking to find a solution for? For the purposes of this post, I will
assume that we are trying to provide electricity to power
refrigerators, lighting, miscellaneous equipment such as telephones and
computers (even remote villages can have satellite connections to the
internet these days!). This would be a light load and not include
industrial use nor electrical heating/cooking.

So I will propose two solutions, both of which are used in various
places:

1) Grow an oil crop, use it to power a diesel generator
2) Install photovoltaic solar panels and use a battery system to store
the energy overnight

Now I'm trying to get an understanding of the pros and cons of these
two approaches, and which would be better for a particular location.
The issues I have thought of so far are the following:
--
Photovoltaics and batteries are expensive in terms of capital outlay,
whereas biofuels are cheap to 'install'.

Photovoltaic systems have a conversion efficiency of ~10% of the solar
energy, whereas biofuels have a conversion efficiency of about 1%

Photovoltaic systems require more specialist knowledge to maintain,
whereas biofuels require less.

Photovoltaics require low labour input once they are installed, whereas
biofuels require planting, harvesting, processing etc..

Photovoltaic systems can store only small amounts of energy over short
timescales, whereas you can store large quantities of oil for a long
time

Photovoltaics make less sense when sunshine levels are highly
unpredictable, whereas biofuel crops are not significantly affected by
a few gloomy days

Photovoltaics require less land to install than oil crops, because of
their higher conversion efficiency.
--

I realise that this is an oversimplification of the issues, and I'm
trying to gain a deeper understanding of the secondary issues. So my
specific questions are:

1) What are the implications of manufacturing Solar collectors,
batteries, electronic control equipment and so forth in terms of energy
use, toxic materials (e.g. lead in batteries), sustainability? How does
this compare with manufacturing a diesel generating system?

2) Biofuels are often produced from crops that are grown in an
unsustainable manner. What are the effects on biodiversity of this? How
can this be counteracted? Are there any comparable environmental issues
in the manufacture of solar systems?

3) Do the levels of expertise required to install and maintain a solar
system make it inappropriate for use in remote villages?

4) Am I correct in assuming that the best (cheapest over all) solution
for a Diesel generator in such situations is to use SVO (straight
vegetable oil) with a preheating system, rather than converting it to
biodiesel?

5) What are the effects on electricity usage patterns for each type of
supply? For example, if people know that their battery system can only
store a fixed amount that won't be replenished until the next day, are
they more efficiency conscious than if they know their supply won't be
replenished until next year's harvest?

My gut feeling is that due to the higher conversion efficiency of solar
panels, these would make a better overall solution for providing
electricity than growing biofuels, with less environmental impact
overall. However the high capital cost may rule this solution out for
smaller villages. (Of course if you are using the energy for transport,
then biofuels are much better because the energy can easily be stored
and transported over long timescales. But that is not what I'm
interested in here).

Does anyone have any other information, opinions, experience of these
types of systems? Have I overlooked any significant arguments on either
side?

I may soon have an opportunity to visit a remote solar installation
that is backed up with a Diesel generator (as far as I know using
petrodiesel) so wish to find out as much as possible beforehand.

Regards,
Donald




 Yahoo! Groups Sponsor ~-- 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!

RE: [biofuel] Biodiesel in Thailand.- Biodiesel is irrelevant without an abundant feedstock.

2004-09-03 Thread Peggy

Hello Peter,
The study was done in Hawaii and I will have to search in my notes to
send the reference paper location.  I looked in my technical references
and the complete reference was not there.  (It was inserted later by one
of my colleagues).  It's somewhere, but will take a little time to
unearth.  In the meantime, you may find it on the Internet if you look
for a Hawaii study on fuel ethanol using paper.

Our researchers are working with various biochemical innovations to
further enhance the process.  I'll post our good news when we have a
proven process.

Peggy



Hi Peggy,

Do you have any reference or web links to the process?
It would be another interesting area to look at.

Hi Peter,

Just got back.  I think that Cambodia is a really good
target.  Since as you said there's no oil refinery
there.  My initial gut feeling was that BD can be
developed in Vietnam also.  But I have since found out
that Vietname has just constructed an oil refinery and
it should begin operational soon.  I hope that your
venture in Cambodia will be successful.  Do keep us
updated.

God Bless,

Caleb
--- Peggy [EMAIL PROTECTED] wrote:


-
Hello Peter,

It is possible to make fuel ethanol from discarded
paper and food waste
(non-dairy and no meat) making fuel ethanol another
alternative to
biodiesel as well.

Peggy


Hi Caleb ;;

I agree with you 100% about used frying oil being a
questionable feedstock.  There simply isn't enough of
it to make any significant business out of it, and it
is spread out over a large geographic area.  Yes, sure
the backyard tinkeres can make a go of it.  But as
soon as you start to buy any significant quantites,
the price will surely rise, plus you have significant
collection costs.

You can estimate the available quantity by trying to
think about how much frying oil you personally use,
then add in some extra to account for the fried donut
or fried chicken that you ate at  the restaurant. 
Then compare that to how much diesel you use.  Then
add in the diesel used for your electricity, all the
transportation costs to bring your food to the
supermarket, ect.  For me I use about 100 times more
diesel than frying oil.  So then we could roughly
estimate that if a city uses for example 1 million
liters of diesel a month, there would be 10,000 liters
of used frying oil.  But only a small fraction could
be recocovered (you couln't recover the used frying
oil that I personally use, for example).  

My conclusion is that a very small number of people
could make it work, but as soon as a few more people
try, supplies will dry up.  That's why biodiesel is
irrelevant without an abundant feedstock.  Please
don't forget about all the people dying, being killed,
destroyed lives in the middle east over oil wars. 
Then add in the huge cost in military hardware, all
the lost productivity of the men figting instead of
working, and I'm not so sure that the cost of diesel
is lower than the cost of biodiesel made from palm
oil.

Yes Malasia is the world leader in palm oil
plantations, so this would not interest you.  But
Cambodia has no oil plantation and no oil wells
either.  They are net importers of both commodities. 
So they are very interested in both possibilities.

Yes please keep me infomed about the BioFuel
conference in December.

Best Regards,

Peter G.
Thailand

--- kok fong lau [EMAIL PROTECTED] wrote:

 Hi Gaug,
 
 Thanks for replying.  I'm based in Singapore, but I
 come from Malaysia.  In Malaysia there are plenty of
 palm oil plantations.  The industry is well
 established.  There was a push for BioDiesel back
 during the 2002.  But since then Palm oil prices
 have
 risen by almost 100%, which makes it more profitable
 at the moment to export it overseas as cooking oil
 than to convert it to biodiesel for local
 consumption.
  Though rising oil prices might actually reverse all
 that.
 
 Diesel prices in Malaysia is far too cheap. 
 According
 to the latest prices, we're the second cheapest
 after
 brunei.  So pushing for BioDiesel is going to be
 hard
 in Malaysia.  Plus we're a net exporter of crude
 oil.
 
 I have plans as you to perhaps develope a small
 biodiesel industry in Singapore based on used
 cooking
 oil.  Still doing a lot of ground work at the
 momement.  Singapore is moving towards euro IV
 emission standards, and biodiesel can help offset
 some
 of the cost of migrating to euro IV disels here. 
 Initial investigation into used cooking oil as a
 feedstock here, indicate that it might not be a
 reliable source of feedstock.  However we are not
 giving up hope yet.
 
 Yeah the Thailand BioFuels forum is way to
 expensive. 
 There's another one coming in december.  This time
 it's going to be organized by MPOB from Malaysia . 
 I
 might pop over and take a look if I'm free.  I'll
 get
 more details for you if you are interested. 
 
 Caleb
 
 --- Guag Meister [EMAIL PROTECTED] wrote:
 
 
 -
 Hi Caleb ;
 
 Thanks for your 

[biofuel] Re: Pump Washing of biodiesel

2004-09-03 Thread j_kimrey

I've been wondering...  has anyone tried an old box fan motor with a 
paint stirrer on the end instead of a drill?  I thought the torque 
handling capabilities of the drill might be overkill, and something 
with lower torque strength might get the job done.

-= Jay =-

--- In biofuel@yahoogroups.com, bioveging [EMAIL PROTECTED] 
wrote:
 I have done this very thing with a 40 liter batch and washed it in 
a 
 poly drum (200liter) using a standard paint stirrer on the end of 
a 
 standard drill and got excellent fuel from it (it's all gone now 
 thanks to the Benz) :) Tonight I am going to acquire a Pony Pump 
and 
 once that gets set up I will let you know how it worked (or 
didn't). 
 The drill-pumps are not doing very well, they keep burning out. I 
 have one that draws water and is still operational but the two I 
was 
 using, one for wash and the other for transfer of BD through 
filters 
 crapped on me, so it's $ and Pony Pump time.
 Stir mixing works well, but be very cautious of the methanol 
fumes. 
 Make it fumeless (closed) if possible. If not do it outside in a 
 cross wind. Washing with a paint mixer works very well and allows 
 for longer settling after washing than bubble or mist washing does 
 as well as it's other advantages.
 
 L.
 
 L.
 
 --- In biofuel@yahoogroups.com, dermot [EMAIL PROTECTED] wrote:
  Thanks everybody for the replies. 
  I mixed the methoxide with the wvo by gradually letting the pump 
 suck it from a carboy as the wvo was being pumped through the 
 processor.
  I'm fairly happy that there was good mixing because of the tests 
I 
 did after I made the biodiesel.
  Remember that I reprocessed the biodiesel a second time and got 
no 
 glycerine fall out indicating that all the product had reacted.
  I also did the share test and got a clear separation.
  
  I'm fairly sure at this stage that my problem is that too 
vigorous 
 pumping produces mayonnaise even if the biodiesel has reacted 
fully.
  
  I am going to try another 50 litre batch and I will use a 
 motorised stirrer this time.
  Has anybody got any idea about the diameter of impellor I should 
 use and what rpm to use?
  I'm going to use a 200 litre plastic barrel to do the washing.
  
  Thanks everybody again for the help/suggestions.
  
  Dermot
  
  -Original Message-
  From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
  Sent: 02 September 2004 10:58
  To: biofuel@yahoogroups.com
  Subject: RE: [biofuel] Re: Pump Washing of biodiesel
  
  But isnt the mixing period long enough? Say you mix for a whole 
 day would it still be uneven?
  What im really asking is this caused because of mechanical 
factors 
 or because a chemical reaction takes place, too much methroxide 
 exposed to too little oil...
  Just trying to get a better understanding of things.
  
  Thanks for your time
  
  -- original message --
  Subject:[biofuel] Re: Pump Washing of biodiesel
  From:   bioveging [EMAIL PROTECTED]
  Date:   01st September 2004 7:9:3
  
  The idea of methoxide mixing is to introduce it at a rythm that 
 will
  ensure even distribution throughout, so if you jet it all in at 
 once
  it might not get evenly distributed and that might leave some oil
  unreacted, IMO.
  
  L.
  
  --- In biofuel@yahoogroups.com, Greg  Harbican 
 [EMAIL PROTECTED]
  wrote:
   What about when you first mix the methoxide with the veggie 
oil,
  is there such a thing as  mixing them to violently  because of
  having to powerful a pump?
  
   Greg H.
 - Original Message -
 From: dermot
 To: biofuel@yahoogroups.com
 Sent: Wednesday, September 01, 2004 07:03
 Subject: RE: [biofuel] Re: Pump Washing of biodiesel
  
  
  
 I think, as you rightly suggest, that my pump is too powerful
  and that the
 mixing is too violent.
  
 Thanks for you input.
  
 Regards
 Dermot
  
 -Original Message-
 From: bioveging [mailto:[EMAIL PROTECTED]
 Sent: 01 September 2004 02:46
 To: biofuel@yahoogroups.com
 Subject: [biofuel] Re: Pump Washing of biodiesel
  
 OK, I am no pro at this but even I can see a couple of 
points.
  Why
 bring it up to 130C ? Did it need dewatering or was it just a
 precaution? A sample test in a saucepan brought up to temp 
 would
 have confirmed it one way or the other.
 I have made BD using some really crappy WVO which titrated at
 10gr/liter and washed it using a paint stirrer and it tunred 
 out
  OK.
 The procesing temp is too high in your case.65C will boil 
off 
 the
 methanol which goes vapour at about 64C. Your processing temp
  should
 not be over 55C (130F). Too high or too low will result in 
poor
  end
 product.( I know, I've done it)
 2HP pump huh? Wow ! Bet that thing hums huh? Might be a bit 
too
  much
 for such a small amount though, although someone else will 
have
  to
 comment of that as I am not in the know on it. There has been
  talk
 of a 1/2 HP pump for 

Re: [biofuel] Question - efficiency of sunlight conversion

2004-09-03 Thread Keith Addison

Hi Hakan, Donald

Donald,

One very important part for biofuels that you forgot, is the positive
effect on job creation and the village economy. It is possible reselling
and creation of income for the village. Maybe the following can give you
more ideas.

http://www.undp.org/seed/energy/contents.html

Biofuel will also open up the possibility to use it for transportation,
work, water pumping, etc. Its labor input is not a negative, it is a
positive, since it is local.

Hakan

That's quite right, Hakan. It's basic to Appropriate Technology 
development to make maximum use of local resources and reduce 
imported technology (or imported anything) to a minimum, preferably 
to zero.

Local resources include local know-how. Rural villagers don't know 
from PVs but they do know how to grow things, they know their local 
crops, and the local plants and trees too even if they don't grow 
them. This is one reason that local crops almost always do better 
than crops imported from outside the community, even though the 
imports might be much higher-yielding (in theory), especially if the 
object is community development, not just production. Even when 
overall production is higher, it might not benefit the community - 
there are many cases of higher production having the opposite effect, 
leading to increased hunger for instance, even to peasants losing 
their land. Yet such projects are often hailed as a success because 
the yields were higher, never mind all the babies that get chucked 
out with the bathwater.

Another important aspect is that the selection of local crops and 
local knowledge and skills provides further opportunities to involve 
the community in the decision-making process, which is also a key 
factor in the success of a community development project.

I could go on, but you can see how these factors favour a biofuels 
solution over PVs.

Use of biofuels could mean the option of using a locally produced 
diesel motor in some cases, produced in the local region anyway if 
not in the village. Lister-type diesels, for instance, are still made 
locally in a number of 3rd World countries, and where they're not 
made there's often widespread familiarity with them. Local mechanics 
know how to handle them, and local or regional workshops can make 
parts for them. Oilseed presses and other equipment can also be 
produced locally. All of this benefits the local economy more than 
any totally imported technology could do, especially something 
high-tech like PVs, well beyond community reach. With PVs nothing is 
transferred except the narrow function of the technology itself, 
along with continued or increased dependence on outside sources.

Then there's the question of battery renewal, and of what to do with 
the dead batteries. We've had some furious arguments about this here 
before. A guy named Jerry Dycus proposed PVs as a general solution to 
3rd World power provision, and insisted against all reason that all 
batteries are recycled and it could not possibly cause problems. Even 
in the US, where it's rather doubtfully claimed that 97% of batteries 
are recycled, that still leaves about six million batteries a year 
that don't get recycled. 3rd World countries, especially rural areas, 
have no infrastructure for battery recycling. I've seen some really 
horrible things being done with dead batteries. In one case they were 
being ground up and sold to farmers as zinc fertiliser (the soils 
there were said to be short of zinc). Just think of that.

Well, it wasn't just me, dear old Jerry argued with just about 
everyone. He got so angry he decided the whole list was anti-EVs, 
which it most certainly is not, but he started telling people we 
don't like EVs here, managing to wreck the EV discussions, and it 
still hasn't recovered. He was also sneering at people because 
there's lead in their computers. Very silly stuff.

Anyway, never mind all that, the batteries are a question to be dealt 
with. Of course we're generalising here. The best we can do is to 
identify good operating principles - principles, not rules. Which 
turns out to be the better choice will depend on the circumstances in 
the particular village, which could easily turn any prior general 
conclusion on its head.

Some more comments below...

At 11:20 AM 9/3/2004, you wrote:
 I have a question that some of you might be able to shed some light on.
 
 As well as having an interest in biofuels, I also have an interest in
 Third World development issues and other technologies, including Solar
 energy collection and storage. So when trying to find an 'energy
 solution' for a remote village for example, there are a number of
 possible options. Of course, you have to ask, what problem are you
 looking to find a solution for? For the purposes of this post, I will
 assume that we are trying to provide electricity to power
 refrigerators, lighting, miscellaneous equipment such as telephones and
 computers (even remote villages can have satellite 

Re: [biofuel] Diesel and biodeisel

2004-09-03 Thread kline

 I'm looking to purchase a new(or newer Jeep) in the near future.
 I've seen that Jeep is now coming out with a new diesel version of
 the Liberty.
 My co-worker said that diesel car produce more pollution then
 regular gasoline vechiles. I thought it was opposite, which is true?
 Also, I live in an urban area and would like to eventually wean off
 gas and into biodiesel. Are biodiesel sources in urban areas
 (particularly in the DC metro area) readily available?

 Hey welcome to teh list!
Diesel cars pollute less in terms of greenhouse gases, VOCs and CO
emmissions.  They produce more NOx and PM pollutants.  The choice is yours
which is the bigger threast.  I'm convinced its the VOCs and greenhouse
gases.  To answer your question about biodiesel...you cna run the new
diesels oin it and it may or may not be readily available in DC.  Here's a
place to look and see if you ahve a public pump www.biodiesel.org Sorry
can't make it hot.  Certainly don't believe everything tehy tell you but
its a start.  Either way, it'll be expensive unless you brew your own,
which is certainly not as hard as it sounds.  If you follow the directions
on JTF you should be able to make good biodiesel.  Think the new diesel
Libby will get 24-28MPG, but that's just a  WAG.



 Biofuel at Journey to Forever:
 http://journeytoforever.org/biofuel.html

 Biofuels list archives:
 http://infoarchive.net/sgroup/biofuel/

 Please do NOT send Unsubscribe messages to the list address.
 To unsubscribe, send an email to:
 [EMAIL PROTECTED]
 Yahoo! Groups Links










 Yahoo! Groups Sponsor ~-- 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




[biofuel] Environmentalists Against War

2004-09-03 Thread Ross Cannon

Environmentalists Against War
 
http://www.envirosagainstwar.org/index.php
 
The difficult situation that the US is in can not be solved by waging
more wars. The violence done in our name generates more violence 
and hatred against us. The solution arises from changing our attitudes 
about other people. We need to stop the theft of their resources and 
labor and begin to treat them with respect and dignity. RossCannon


Get your name as your email address.
Includes spam protection, 1GB storage, no ads and more
Only $1.99/ month - visit http://www.mysite.com/name today!



 Yahoo! Groups Sponsor ~-- 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




Re: [biofuel] Question - efficiency of sunlight conversion

2004-09-03 Thread Darryl McMahon

Donald (and all), I certainly don't have all the answers (maybe none), but it 
is a 
complex topic, and I can certainly muddy the waters a bit more.  Comments 
inserted 
below.

Donald Allwright [EMAIL PROTECTED] wrote:

 I have a question that some of you might be able to shed some light on.
 
 As well as having an interest in biofuels, I also have an interest in
 Third World development issues and other technologies, including Solar
 energy collection and storage. So when trying to find an 'energy
 solution' for a remote village for example, there are a number of
 possible options. Of course, you have to ask, what problem are you
 looking to find a solution for? For the purposes of this post, I will
 assume that we are trying to provide electricity to power
 refrigerators, lighting, miscellaneous equipment such as telephones and
 computers (even remote villages can have satellite connections to the
 internet these days!). This would be a light load and not include
 industrial use nor electrical heating/cooking.

Let's think about the loads a bit, particularly refrigeration.  In this case, 
we 
don't really need to store electricity, but coolth.  So one approach would be 
to 
develop a solar-powered icebox.  Have the PV panels run a conventional 
refrigeration unit when the sun is shining to make ice in the top of the 
icebox.  
A sensor can control a fan to pull air through the ice into the refrigerator 
when 
required to maintain temperature.  Some electricity is still required for the 
fan 
(the sensor could be a simple bimetallic switch), but much less than for the 
compressor, so that would reduce electrical storage requirements significantly.
 
 So I will propose two solutions, both of which are used in various
 places:
 
 1) Grow an oil crop, use it to power a diesel generator
 2) Install photovoltaic solar panels and use a battery system to store
 the energy overnight
 
 Now I'm trying to get an understanding of the pros and cons of these
 two approaches, and which would be better for a particular location.
 The issues I have thought of so far are the following:
 --
 Photovoltaics and batteries are expensive in terms of capital outlay,
 whereas biofuels are cheap to 'install'.
 
 Photovoltaic systems have a conversion efficiency of ~10% of the solar
 energy, whereas biofuels have a conversion efficiency of about 1%
 
 Photovoltaic systems require more specialist knowledge to maintain,
 whereas biofuels require less.
 
 Photovoltaics require low labour input once they are installed, whereas
 biofuels require planting, harvesting, processing etc..
 
 Photovoltaic systems can store only small amounts of energy over short
 timescales, whereas you can store large quantities of oil for a long
 time
 
 Photovoltaics make less sense when sunshine levels are highly
 unpredictable, whereas biofuel crops are not significantly affected by
 a few gloomy days

A small wind turbine is another option for renewable generation of electricity, 
and 
usually cheaper to install per watt-hour produced.  Of course this assumes an 
appropriately windy place, just as PV assumes an appropriately sunny place.  
Another option is low-head hydro, if a suitable stream is nearby.

 
 Photovoltaics require less land to install than oil crops, because of
 their higher conversion efficiency.
 --
 
 I realise that this is an oversimplification of the issues, and I'm
 trying to gain a deeper understanding of the secondary issues. So my
 specific questions are:
 
 1) What are the implications of manufacturing Solar collectors,
 batteries, electronic control equipment and so forth in terms of energy
 use, toxic materials (e.g. lead in batteries), sustainability? How does
 this compare with manufacturing a diesel generating system?

The batteries don't have to be lead-acid.  For a remote, stationary 
application, I 
would seriously consider nickel-iron batteries (Edison cells).  More expensive 
(mostly due to lower production I expect), but less toxic (there is a caustic 
electrolyte), and can be very long-lived, reducing the disposal/recycling issue 
considerably.

 
 2) Biofuels are often produced from crops that are grown in an
 unsustainable manner. What are the effects on biodiversity of this? How
 can this be counteracted? Are there any comparable environmental issues
 in the manufacture of solar systems?
 
 3) Do the levels of expertise required to install and maintain a solar
 system make it inappropriate for use in remote villages?

PV panels are effectively non-repairable.  Solid state controllers are also 
effectively non-repairable.  However, in a simple installation (which can be 
fairly 
large), regulators are not really necessary, if someone is prepared to monitor 
the 
battery charge state on a daily basis (and do some discharging if the batteries 
are 
being overcharged).  Batteries do require some maintenance, and replacement 
(typically every few years).  However, installation and maintenance is 
certainly no 
more 

RE: [biofuel] Biodiesel in Thailand.- Biodiesel is irrelevant without an abundant feedstock.

2004-09-03 Thread Keith Addison

See:
Ethanol from cellulose
http://journeytoforever.org/ethanol_link.html#cellulose

It's the sixth one in the list.

Keith


Hello Peter,
The study was done in Hawaii and I will have to search in my notes to
send the reference paper location.  I looked in my technical references
and the complete reference was not there.  (It was inserted later by one
of my colleagues).  It's somewhere, but will take a little time to
unearth.  In the meantime, you may find it on the Internet if you look
for a Hawaii study on fuel ethanol using paper.

Our researchers are working with various biochemical innovations to
further enhance the process.  I'll post our good news when we have a
proven process.

Peggy



Hi Peggy,

Do you have any reference or web links to the process?
It would be another interesting area to look at.

Hi Peter,

Just got back.  I think that Cambodia is a really good
target.  Since as you said there's no oil refinery
there.  My initial gut feeling was that BD can be
developed in Vietnam also.  But I have since found out
that Vietname has just constructed an oil refinery and
it should begin operational soon.  I hope that your
venture in Cambodia will be successful.  Do keep us
updated.

God Bless,

Caleb
--- Peggy [EMAIL PROTECTED] wrote:


-
Hello Peter,

It is possible to make fuel ethanol from discarded
paper and food waste
(non-dairy and no meat) making fuel ethanol another
alternative to
biodiesel as well.

Peggy

snip



 Yahoo! Groups Sponsor ~-- 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM
~- 

Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html

Biofuels list archives:
http://infoarchive.net/sgroup/biofuel/

Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED] 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/