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1749Re: [hreg] Re: BP Solar did you read & ethanol

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  • Robert Bruce Warburton
    Dec 4, 2002
      Check out the webmaster@... site. If this is true, I am wondering what would prevent someone developing a device that works sort of like an oxygen concentrator except instead of taking in air it would take in exhaust fumes from a vehicle, and instead of trapping the free nitrogen it traps hydrocarbons and allows the other emissions to go through the exhaust pipe. If the hydrocarbons were trapped over a long enough period, they could in combination with air produce electricity.

      "Kevin L. Conlin" wrote:

      The main problem with BP's thin film technology is that it, like all other thin film technologies, has not lived up to it's main promise of lower costs.  Very few thin film manufacturers are profitable, and BP is simply trying to cut it's losses.  The current PV market is being driven by large grid tied markets, especially in California, and the thin film products do not fit this scheme due to their larger size, and hence, higher installation costs per watt.
      ----- Original Message -----
      Sent: Monday, December 02, 2002 10:02 PM
      Subject: [hreg] Re: BP Solar did you read & ethanol
       Dear HREG, What is wrong with BP's thin film technology?  I thought it was less cost per watt. Does another company, like Unisolar, already have the upper hand on thin film solar cells? Another question... if ethanol becomes a popular fuel, what percentage of our farmable land should we contribute to fuels.  Here are some facts (I think they are facts) to ponder:  There are about 500 million acres of farm land in the US (not including livestock rangeland).  An acre of land can grow about 100 bushes of corn per year.  A bushel of corn can produce about 2.5 gallons of ethanol.  A gallon of ethanol has a little more than half the energy content as a gallon of gasoline.  The US consumes about 200 trillion (2x10^11) gallons of petroleum per year for transportation.  This means to completely convert to ethanol would require more than 2x10^11 /2.5 /100 /0.6 = 1.3 billion acres of land dedicated to growing corn.  What if we scale back and add 5% ethanol to the gasoline pool as an oxygenate (replace MTBE)?  Then, that would require 133 million acres of land.  Is that reasonable?  What do you think?  What would you tell your congressman? Please reply,Chris 
      ----- Original Message -----
      Sent: Thursday, November 28, 2002 4:34 PM
      Subject: [hreg] Re: BP Solar did you read
       Did you read in the Houston Chronicle on the 26th that BP Solar will cut as many as 260 jobs in the U.S. in an effort to keep its solar panel sales growing at an annual rate of 30%. They will no longer make thin film solar cells. They will now concentrate on crystalline silicon cells, which already account for 85% of its solar cell production.

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