Mechanical Engineering

Hi Guest,

It's been a while, and nobody else seems to have posted a reply, so I guess I give it a try.

Your question is a bit hard to understand…

You want to "produce a plate, which can burn water with out any external power supply"… Water is non-flammable and will not burn, and in fact is used to quench, or extinguish fires.

However I presume that you mean to boil the water.

I'm taking some liberty, in observing that the reference you made was to sun tv, inferring solar power.

And, leading in that direction, instead of a "plate", could you possibly be referring to a solar collector, either in the form of a large parabolic shaped reflector, or a large array of small square mirrors, adjusted to project their light at the same point?

(I found these pictures in a quick Google search for solar furnace and solar cooker).

Such a device would indeed be able to boil water placed at its "focus point". But the quantity of water you could boil would be controlled by the quantity of solar energy you could collect. That is, the bigger your parabolic reflector or mirror array, and the better focused, the more heat you could generate to boil more water.

You can find a lot of information regarding the construction of various types of solar collectors on the web. Doing a Google search for the underlined words in the previous sentence, and in the paragraphs above will get you started.

I read somewhere that at the equator there is about 1kW of solar power falling on every square meter of collecting surface. Therefore your solar collector would need to harness about 3 square meters of incident sunlight if you want to approximate the heat output of a typical (natural gas fueled) kitchen cook top burner (10,000 BTU/Hr).

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I could, of course, be totally off base with all of the above presumptions regarding solar power, and you could have something totally different in mind.

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Just my $0.02...