On Wednesday, Apr 7, 2004, at 03:32 US/Pacific, Russell McMahon wrote:

>> Could a Stirling Engine be used on the exhaust gases from a furnice
>> to produce electricity and raise the furnice efficiency.
>>
Note that modern furnaces are so efficient that they use plastic
exhaust pipe (and not high-temp plastic, either.)  Seems to me like
you'd be going to a lot of trouble to gain something like 1% additional
efficiency...

BillW

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