“Solar hot water” is a term used to describe water heating systems that are powered by solar energy. In most instances, these systems consist of a solar collector and a series of fluid filled tubes. The collectors heat the fluid, which then moves through the tubes to the water reservoir.

A solar hot water system can be used for several different applications. Many homes around the world are finding that theses systems can provide all of their hot water needs, without costing a dime. They are also often used to heat swimming pools and for commercial applications as well.

Solar hot water systems have been popular in warmer climates for decades. However, in climates that do not have year round summer weather, back-up heating elements are usually required. In most cases, a small electric water heater is the primary means of back-up heating.


Source:www.greencluster.org