How to make asolar waterheater?Give deatails of anyother products using solar energy.?
Question:
Answer:
Solar energy is used for two types of devices: thermal, and photovoltaic. For your water heater, you are talking thermal. Put tubing into a black box with a clear cover, put the box in sunlight, and you have a solar water heater -- details vary, but they don't matter much. Photovoltaic use silicon cells (usually called solar cells, or solar panels) to generate electricity. Solar-cell powered garden lights, where the light is a light-emitting diode, are becoming popular and inexpensive. The solar cells charge a nickel-cadmium battery during the day, and the battery powers the lamp at night.
Try this:
www.solarcooking.org
Good luck.
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