I need to build a solar water heater for school?

Question

it needs to heat a liter of water as fast as possible

im a failure at phsyics

can someone please help me!

Answer 1

My suggestion would be a series of piping, coated in black paint, water passes through it - for a larger scale. Seems a little impractical so...

Create a convex mirror, to focus the suns rays into a pot/glass that the litre of water is contained in. Focusing the sun's rays on the water, the water can heat up relatively quickly (on a good day) (we're talking abotu a mirror at least 50cm in diameter)

Answer 2

HI, maybe this article could help you :http://ateliving.com/SOLAR-HOT-WATER-HEA...

Answer 3

Get a cake pan as large as possible. Paint it black. Fill it with water (one liter). Cover the cake pan with a piece of sheet glass.

Answer 4

This site will give you all kinds of ways to make a solar water heater, and should give you some ideas for making one.

personally I like the beer bottle one.

http://www.builditsolar.com/Projects/Wat...

http://www.instructables.com/id/Solar-Th...

Answer 5

You can go to a camping store and buy for cheap a "solar" water heater. It's just a plastic bag with one clear side and one black side and a hose the water comes out.