i need to build a solar water heater for school?

it needs to heat a liter of water as fast as possible
im a failure at phsyics
can someone please help me!

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/WaterHeating/water_heating.htm

http://www.instructables.com/id/Solar-Thermal-Water-Heater-For-Less-Than-Five-Doll/


5 Responses to “i need to build a solar water heater for school?”

  1. Edg1 says:

    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.
    References :

  2. Chris T says:

    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)
    References :

  3. Hannah's Grandpa says:

    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/WaterHeating/water_heating.htm

    http://www.instructables.com/id/Solar-Thermal-Water-Heater-For-Less-Than-Five-Doll/
    References :
    jcms

  4. Uncle Dud says:

    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.
    References :

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