Wednesday, June 24, 2009

Building a Solar Fridge

AIDG reports on an effort by MSU students to construct a solar fridge:
The Internet is stacked with academic knowledge on solar adsorption refrigeration, but our team has the goal of developing a system and assembly instructions that can be used by anybody. Our adsorption refrigerator design uses passive solar energy rather than electricity and has no moving parts. But before the adsorption process can be understood, it is necessary to understand the basics of refrigeration. All fridges operate on the principal that a liquid boiling to a gas takes heat away from its surroundings. It is also important to know that a liquid can be made to boil at a very low temperature by altering the pressure. While water boils at 100°C at atmospheric pressure, it can be boiled at 0°C under a very high vacuum.

More here.

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