The low pressure gravity feed complete system consists of a vacuum glass tube collector, an insulated storage tank and feeder tank, and a flat roof stand. The evacuated glass tubes are filled with water and exposed to sun, thus heating up the water in the glass tubes.

As the specific gravity of cold water is heavier than hot water, the hot water in the glass tubes starts rising in the insulated water tank, and the cold water in the insulated water tank sinks into the glass tubes. As this cycle is repeated, water in the solar water heater gets heated. This process is known as Thermosyphon and is based on natural convection.

Thermosyphon solar water heater relies on the natural circulation of water between the collector and the tank or heat exchanger. As water in the vacuum tubes is heated it rises by convection into the tank, while cooler water in the tank flows down to the bottom of the vacuum tubes, causing circulation throughout the system. The storage tank is insulated so the water stays hot and can be used later in the day or even the following day. There is a provision for an electrical backā€up heater for periods when there is not sufficient sunlight.


PDF Download Genergy 110L LP SABS Conformity Report.pdf
PDF Download Genergy Low Pressure Manual 2011 REBATE.pdf
PDF Download SABS 110L Gravity Feed Brochure 2010.pdf