[Gasification] ir(heat) driven PV cells

[Art Krenzel]

Jim,

JX Crystals near Seattle has already constructed an operating thermal PV
(TPV) system for the US Army and it is setting on his desk.

The problem is that the IR cells respond best to the IR from the highest
temperatures.  It is difficult to get things to hold together at 2000 deg.F
for any economical time.

Give Dr. Lewis Fraas a call and he will tell you the problems of getting
above 12% efficiency first hand.

Art Krenzel
----- Original Message ----- 
From: "Peter Singfield" <snkm at btl.net>
To: <gasification at listserv.repp.org>
Sent: Tuesday, February 27, 2007 3:35 PM
Subject: Re: [Gasification] ir(heat) driven PV cells


>
> Jim;
>
> A while back I was presenting info on catalytic heaters -- I believe such
> can work on producer gas -- and they emit heat mostly in IR.
>
> I'll go check that Url
>
> Peter
>
> At 03:05 PM 2/27/2007 -0800, jim mason wrote:
>>http://www.jxcrystals.com/ThermoPV.htm
>>
>>i had yet to see these.  a very interesting technology.  essentially a
>>PV cell that responds to IR wavelengths, generating electricity
>>straight from heat.  or rather, electricity straight from infrared
>>waves.  this is different than a thermocouple, which is running on
>>conduction.
>>
>>i'm not sure the relative efficiency and price points between
>>thermocouples and thermoPV, but 1cm2 in a combustion environment is
>>claimed to produce one watt. compare that to .01 watt for the same
>>with silicon PV in full sun.  they are currently selling 1cm2 cells
>>for 40 dollar each as research units.
>>
>>i still like just using the already well optimised solar collectors
>>nature made (i.e. biomass), but this is an interesting new hybrid
>>solar route, which i thought might be of interest to some here.
>>
>>j
>>
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