What can you tell me about Stirling engines?
I'm interested in using a Stirling engine in a solar energy project.
From reading around and doing some numbers it looks like I'll need around 1.5 kilowatts, and something in the vicinity of 30% efficiency or upwards would be nice, though I realise this may be overly optimistic.
So, what's available, how much will it cost, what temperature differential is ideal, how big and heavy are these things, etc.
Any info I get would enormously helpful.