Update – November 9, 2013
The original content of this page has moved. Scroll down to “Stirling engine efficiency” and click on the link.
I am thinking of using hot water from solar evacuated tube does this ‘free heat’ help its efficiency compared to coal fired heat. What about possible reduction of CO2 using heat from the sun as preheater for hot water stirling engine?
Replying to the response: the fact that the solar heat is ‘free’ doesnt change the efficiency of the stirling engine. In fact it will be quite low as the temperature is low. But if you have spare solar heat the efficiency is less critical if it gives you electricity that you need. It will save CO2 if you can burn less fuel.
The temperature of the water available may be of a low temperature coming from a solar panel of some sort I suspect…
A better way to go may be to use a parabolic mirror to reflect onto the hot cylinder of the stirling engine as the temperature of sunlight is around 6000K
The only trouble is you will need a large reflecter
That is rather good. I was thinking of what it would be in the new Sterling Engines for solar to electricity effeciency?
I was wondering if I could use the image power and thermal efficiency vs speed for an article I am doing for clean technica. All the other Images I have found do not start at the 66% theoretical max.
^^^ Sure, you can use the image. Just credit this page so people know where the image came from. You don’t need to use my name, just the page URL in the credit will suffice.
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