What you should know about Solar Water Heaters

Solar energy is 100% renewable source and of course it is free for all. Yet the intensity of solar radiation is not uniform through out the globe. Hence, solar radiation resource map will help in deciding the size of the solar panels to harness sun's energy. Also there are two types of solar heating systems. In the passive solar heating design, the windows, walls, and floors are specially designed so as to passively collect, store, and distribute available solar energy in the form of heat in the winter months but will avoid solar heat in the summer months.The active solar water systems have mechanical (modern ones have electronic)  controllers providing various functionality  such as orienting the solar panel toward sun, interaction with a backup electric or gas-driven water heater, certain safety functions, remote access and temperature readings.Depending on the result of the solar radiation resource map, the availability of solar energy through out the year and the size of the panel required can be calculated and this will guide in choosing the right solar heating system.

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