[Biofuel] Biofuel for model Aircraft

2005-11-29 Thread Jeffrey Kumjian
Can you tell me how to make Bio diesel for a model
Aircraft? Jeffrey




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Re: [Biofuel] Solar PV Is Cheaper Than Gasoline

2005-06-13 Thread Jeffrey Kumjian
How do you buy a electric Car or van?? Jeffrey

--- MH [EMAIL PROTECTED] wrote:

  Solar PV Is Cheaper Than Gasoline 
  By Stephen Killough 
 
  Charging an electric vehicle with sunlight
  costs less than running a vehicle on gasoline 
  May 31, 2005 
 

http://www.evworld.com/view.cfm?section=articlestoryid=856
 
 
  Are solar cells a waste of money?
  Not if you compare them to gasoline. 
 
  Most people consider solar cells to be impractical.
  They always make comments like solar cells are too
 expensive,
  useless at night, ugly, undependable because of
 clouds, and
  would require cutting down trees. For the typical
 home application,
  these are unfortunately valid complaints, mainly
 because solar cells
  have to compete against cheap coal. However,
 compared with gasoline,
  solar cells can be quite competitive. 
 
  This example deals with one of the largest users of
 gasoline,
  people driving to work. Of course I am talking
 about
  battery-electric cars recharged by solar cells, but
 for a
  different twist I am proposing that the cells be
 located
  not at the owners home, but instead in the parking
 lot where
  the owner works. Why at work? Because when the sun
 shines,
  that’s where the car is. In addition, expansive
 employee parking
  lots are not shaded by trees, and shade from cells
 mounted above
  the car keep the car from becoming hot on summer
 days, and
  can reduce rust and paint fading caused by rain and
 sunshine.
  And nobody will accuse you of harming the
 appearance of their
  beautiful asphalt lot. The nine-hour stay in the
 parking lot is
  compatible with the recharge time for most
 batteries, and the
  lower voltage of the cells is safer than regular
 electrical outlets,
  especially in wet outdoor locations. The employer
 would not have to
  provide anything except anchor points to keep the
 panels from blowing over. 
 
  Even more interesting are the economics. A typical
 parking space is
  9 by 18 feet, or 2.74 by 5.48 meters, for a total
 of 15 square meters.
  A typical latitude in the U.S. is 35 degrees, so
 tilting the panel to
  face the sun allows more panel space to be mounted
 above the
  same parking space, or 18.3 square meters. Typical
 solar radiation is
  1000 watts per square meter, and using high
 efficiency solar cells like
  the 20% efficient A300 units from Sunpower, 200
 watts can be obtained
  per square meter. Without a tracking mechanism to
 continually point the
  cells toward the sun, the average power over 9
 hours is 60% of the
  peak power, or 120 watts per square meter. All this
 adds up to around
  20,000 watt-hours for a typical 9 hour work day.
 This is a significant
  amount of energy that can be collected from one
 parking space,
  although this also points out how much land we
 waste parking our cars,
  but that’s a story for another day. 
 
  The present day cost for solar cells is about $5
 per peak watt, so
  the 3660 peak watt system described here would cost
 $18,300.
  Using a mortgage calculator we can calculate a loan
 for
  this system using a 20 year loan and 6% interest
 rate.
  This comes out to a cost of $131 per month. 
 
  An efficient battery electric car, such as an EV1,
 consumes
  170 watt-hours per mile. The 20,000 watt-hours
 collected by the
  solar panel would thus power this car for 118 miles
 per day.
  A typical month has 22 working days, during which
 the solar panel
  could power the car for about 2600 miles. Compare
 this to a very
  efficient gasoline powered car that got 40 miles
 per gallon,
  traveling 2600 miles and paying $2 per gallon for
 gas.
  The monthly gasoline payments would be $130,
  essentially the same as the solar powered case. 
 
  Some of you may think that it would be better for
 the environment
  to connect the solar cells to the electric power
 grid to displace the
  use of coal. Per basic heating power, gasoline does
 generate less
  carbon dioxide than coal because much of the heat
 comes from
  the hydrogen in the gasoline molecules. However,
 coal generating
  plants are more efficient than internal combustion
 engines, so the
  carbon dioxide emissions are similar whether using
 gasoline in a
  car or coal in an electric power plant. Therefore
 solar cells can
  displace a similar amount of emissions in either
 case. But my
  objective is to promote more solar cells, and the
 way to do this is
  to sell them in a market where they are already
 competitive, which
  is the gasoline market. Furthermore, in many cases
 solar power
  does not displace coal, but displaces more
 expensive fuels like
  natural gas, even though natural gas is cleaner.
 Economic wise, it
  will always be difficult to displace coal because
 it is so cheap.
  After all, the commodity can be simply scraped off
 the ground
  from huge coal fields in Wyoming, delivered in
 railroad cars
  without even requiring a lid to shield it from the
 weather, sent to
  the furnace after very little refining, and 

[Biofuel] Model fuel

2004-10-02 Thread Jeffrey Kumjian

Can you make a model aircraft engine run on biofuel? Jeffrey



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[biofuel] Model engine

2004-06-24 Thread Jeffrey Kumjian

Can you make Bio diesel thin Enough for a small model airplane 
engine? Jeffrey




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[biofuel] Re: alternatives for methanol

2004-05-16 Thread Jeffrey Kumjian

Can you convert a model Airplane engine to run on straight Vegetable 
oil and how are you do it? 

--- In biofuel@yahoogroups.com, Keith Addison [EMAIL PROTECTED] wrote:
 You might consider converting your engine to run on straight 
 vegetable oil and eliminate the need for methanol.  For conversion 
 information, see:
 http://www.biofuels.ca/
 http://www.elsbett.com/gmbh/eindex.htm
 http://www.elsbett.com/wwwusa/engl/corporate.htm
 
 For a comparison, see:
 
 Three choices
 1. Mixing it
 2. Straight vegetable oil
 3. Biodiesel
 http://journeytoforever.org/biodiesel_make.html#3choices
 
 More information:
 
 Straight vegetable oil as diesel fuel
 http://journeytoforever.org/biodiesel_svo.html
 
 I have several new copies of the latest edition of Tickell's 
 book that sell for US$24.95 plus shipping.
 If you are really ambitious, you may consider growing oil 
 producing crops.  Depending on the soil conditions or climate in 
 Malta, there may be many possibilities.  Try:
 http://www.jatropha.de
 
 There's a huge amount of information an many different oil and 
energy 
 crops available in the databases linked from here:
 
 Other oil crops
 http://journeytoforever.org/biodiesel_yield.html#othercrops
 
 Best
 
 Keith
 
 
 Bruce Colley, Sustainable Energy Project 
 http://www.sustainableenergyproject.org
 
 
 
 - Original Message -
   From: Jean Paul
   To: biofuel@yahoogroups.com
   Sent: Saturday, May 15, 2004 6:42 AM
   Subject: [biofuel] alternatives for methanol
 
 
   to whom it may concern,
 
   I am a Maltese chap and diesel here is very expensive, and i 
thought
   of an environmental free alternative fuel
   and bio-diesel seemed the answer.
 
   but the METHANOL in malta is a bit expensive can someone please 
tell
   me if there are any other alternatives..
 
   Can anyone send me the pdf file of joshua tickells book from the
   fryer to the tank please at
 
   [EMAIL PROTECTED]
 
   thanks
 
 
 
 
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