On Mon, 26 Sep 2005, James Newtons Massmind wrote:

>> Only if it works. Anyway it would cost less than half to
>> build, compared to what a 500 Watt Stirling costs (5000 EUR).
>
> I would be willing to help defer the cost of a test Brayton cycle system.
>
>> I have been thinking some more about it. I think that a
>> normal automotive exhaust manifold could be used as the hot
>> part heat exchanger somehow. It would mate perfectly with the
>> turbine inlet. That could take care of the high temp. seal
>> which is a problem anyway.
>
> Could you use the radiator as the cold side heat exchanger? Pour water over
> it as the air is pushed through the inside where the water usually goes.

That is not good for flow resistance reasons. The radiator was optimised 
to work in a certin way. It is best to use it like that.

> Think about how cool it would be to make this entire rig from the remains of
> a turbo charged car or truck with a blown engine.

If you manage to refurbish the bearings on the turbo it should be 
doable. The exhaust manifold and the turbo with the respective piece of 
exhaust tubing will likely be the most important parts to salvage, 
together with the water pump (if it comes off the block), and maybe the 
oil pump (messy). If the turbo has an intercooler then take that too, 
together with all the air and oil tubing that connects to it. Finding 
hoses and clamps that fit fittings on equipment manufactured in a far 
away country is a big pita ime.

Peter
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