RE: [biofuel] Biodiesel conversion for boilers

2003-07-02 Thread Peter

Hi Myles,
May I ask what is the cost of your Biodiesel/litre or gallon? Are you
home brewing?
 
Peter Gathercole
Development Director
Biomass Energy Tanzania Limited
-Original Message-
From: Myles Twete [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, July 01, 2003 8:44 AM
To: biofuel@yahoogroups.com
Subject: RE: [biofuel] Biodiesel conversion for boilers
 
Hi Kent-
Oil-fired boilers use pressure-atomizing burners with high pressure
pumps.
These pumps have rubber seals.
Those rubber seals will likely eventually leak with 100% biodiesel.
We have seen this with 3 pumps on our home heating oil furnace.
The seal leaking might not be a problem depending on the type of burner.
With our Riello burner it was---it still slightly drips from the shaft
seal,
but fortunately, the Riello shaft doesn't connect directly to the fan as
older burners did, so at least the dripping doesn't hit the fan and
blow
all over the air tube and turbulator.
Our main problem was nozzle drip due to the biodiesel eroding the pump
stop seal or thermal expansion or whateverwe reduced this somewhat
by
retrofitting a drip slide so this drippage would be carried away to the
bottom of the turbulator and not blown into it and caking on its face.
Finally, by installing a Hago EcoValve and Nozzle, we've eliminated the
dripping problem.

Finally, low-temps (50deg in our case) increase the viscosity of the
biodiesel and were causing failed heater starts, or sporatic ones.  You
shouldn't have that problem in Costa Rica.  We finally decided to go
with a
50/50 biodiesel blend on our oil heating system fuel
to make it so we don't need to worry about failed cold starts.

On a boat here in Portland, we've been successfully burning 100%
biodiesel
in an oil-fired industrial 200psi Bryan boiler.  No problems over the
past
couple years so far---might be nozzle drip or seal leakage, but we
haven't
checked and haven't had any burning problems.

In case this helps-

-Myles Twete, Portland, Or.





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Re: [biofuel] Biodiesel conversion for boilers

2003-07-01 Thread Appal Energy

Kent,

B-100 will run with no conversion in distillate fuel oil and waste motor oil
fired boilers.

Todd Swearingen

- Original Message -
From: essentialkent [EMAIL PROTECTED]
To: biofuel@yahoogroups.com
Sent: Monday, June 30, 2003 8:20 PM
Subject: [biofuel] Biodiesel conversion for boilers


 Hello,

 Just joined the group.  My name is Kent McKay, and I am a distiller of
organic
 essential oils in Costa RIca and Canada.  I also build stills for other
eco based
 projects and have been asked to put a quote together for a Mayan community
 still in Guatemala.  They are interested in using biodiesel for the
boiler.
 Guatemala apparently has quite a movement in biodiesel.  I have some
 exposure to the use of biodiesel as I work with permaculture projects and
 have seen different bus conversions, but no experience with boiler
 conversions.  Have searched the archives a bit here, and have seen some
 discussions back in 2001 in the group.  Searching the web has been
 somewhat frustrating on an info level for boilers.

 Does anyone have knowledge of a company I could contact for professional
 conversion, or any boiler manufactuers that are now able to provide this
 conversion with their equipment??  Any leads would be most helpful and
 appreciated to try and get this worthwile project of the ground.

 Thanks in advance

 Kent
 Essential Aura Aromatics
 Artisan Distillers of Organic Essential Oils
 http://www.essentialaura.com
 [EMAIL PROTECTED]






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RE: [biofuel] Biodiesel conversion for boilers

2003-07-01 Thread Myles Twete

Hi Kent-
Oil-fired boilers use pressure-atomizing burners with high pressure pumps.
These pumps have rubber seals.
Those rubber seals will likely eventually leak with 100% biodiesel.
We have seen this with 3 pumps on our home heating oil furnace.
The seal leaking might not be a problem depending on the type of burner.
With our Riello burner it was---it still slightly drips from the shaft seal,
but fortunately, the Riello shaft doesn't connect directly to the fan as
older burners did, so at least the dripping doesn't hit the fan and blow
all over the air tube and turbulator.
Our main problem was nozzle drip due to the biodiesel eroding the pump
stop seal or thermal expansion or whateverwe reduced this somewhat by
retrofitting a drip slide so this drippage would be carried away to the
bottom of the turbulator and not blown into it and caking on its face.
Finally, by installing a Hago EcoValve and Nozzle, we've eliminated the
dripping problem.

Finally, low-temps (50deg in our case) increase the viscosity of the
biodiesel and were causing failed heater starts, or sporatic ones.  You
shouldn't have that problem in Costa Rica.  We finally decided to go with a
50/50 biodiesel blend on our oil heating system fuel
to make it so we don't need to worry about failed cold starts.

On a boat here in Portland, we've been successfully burning 100% biodiesel
in an oil-fired industrial 200psi Bryan boiler.  No problems over the past
couple years so far---might be nozzle drip or seal leakage, but we haven't
checked and haven't had any burning problems.

In case this helps-

-Myles Twete, Portland, Or.


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