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This would work like a regular combustion engine but instead of fuel combusting it would be a droplet of water that gets hit with a concentrated solar beam causing it to explode into a ball of superheated steam.
The sunlight would be channeled to the engine cylinders by a series of mirrors that alternate
the beam between the different cylinders.
It would probably work as a two stroke engine. The cylinder sucks a drop of water, as the engine is mid stroke the solar beam hits the droplet, propelling the engine. The engine pushes the hot air out and sucks another drop in.
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I have a 12 ft. diameter satellite dish and 400 sq. ft. of reflective mylar waiting to be used.
The focal point if I combine these two things will vaporize diamond.
What are your cylinders comprised of? |
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Sounds fun, but I think it would be less efficient than a solar heated steam driven turbine. |
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[2fries] What will you use to cover the rest of the dish? |
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How do you stop the droplet vapourising as soon as it enters the cylinder (i.e. before the inlet valve shuts)? Presumably you need some ferocious cooling of the engine body. |
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Yet the concentrated sunlight hot enough to vapourise the droplet will also be strong enough to heat the cylinder lining. |
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Perhaps you need to paint the droplet black or something? |
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[minoradjustments] the concave side of the dish needs something like 120 sq ft of mylar to coat it Then I suppose since you have over 250 sq ft of mylar spare, you can continue by mylar-coating the back of the dish. After that there should still be about 150 sq ft of mylar left over. This gives you options; you could mylar-coat yourself, by making a full body suit out of mylar. I suppose you could also mylar-coat the support bracket and stand as well. It is hard to know how much mylar that would take, without knowing more about the nature of the supports. |
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