Solar Hot Water Systems

By: Ecosmart  06-15-2013
Keywords: solar hot water systems, solar geasers, heat pump, water heating, solar electric, hot water solar sy

Solar Hot Water Systems How does a solar hot water system work? A solar hot water system consists of a solar collector to harness the sun’s solar radiant energy. The solar collector may be a flat plate collector or one of several types of vacuum tube collectors. Flat plate collectors are less expensive than vacuum tube collectors but normally are less effective. This suns’ energy is used to heat the water in the solar collector which is then circulated by thermo syphon or circulating pump to a storage tank or solar geyser. There are two different types of solar water systems available. Thermo syphon systems A Thermo syphon system consists of a solar collector which is situated on the roof preferably facing north at a preferred angle perpendicular (90 degrees) to the sun’s rays. The solar geyser is placed or mounted above the solar collector. The water within the solar collector is heated by the sun's radiant heat which in turn rises to the geyser. The geyser has two connections, one for the hot water which is rising from the collector and another connection for the cold water from the geyser to the solar collector which is then heated and rises via the first connection. Split Pumped Systems A split pumped system consists of a solar collector which is placed or mounted on the roof, facing as close as possible to the north and preferably at an angle perpendicular to the sun’s rays. The pumped system has a circulating pump which is activated by a solar controller which has temperature sensors connected to the solar collector and to the bottom of the geyser. The pump is activated when the temperature difference rises between the solar collector and the geyser temperature, normally by 8 to 15 degrees Celsius. The circulating pump is then stopped when the temperature difference between the solar collector and the geyser has reduced, normally between 2 and 4 degrees Celsius.

Keywords: solar hot water systems, solar geasers, heat pump, water heating, solar electric, hot water solar sy

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