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HEAT STORAGE UNIT WITH SAFETY DEVICE FOR SOLAR WATER HEATER

Abstract(summary):

A heat storage unit with a safety device for a solar water heater comprises a heat storage element (1) and a pressure release valve (4). A phase-change heat storage material (7) is contained in the heat storage element (1). A pressure release hole (9) is provided at one end of the heat storage element (1). The pressure release valve (4) is fixed to one end of the heat storage element (1) and is communicated with the interior of the heat storage element (1) through the pressure release hole (9). The heat storage unit is horizontally or obliquely arranged in a solar heat collecting pipe (5), so that the pressure release valve (4) faces upwardly, and an opening at the inner side of the pressure release hole (9) is above the liquid surface height of the heat storage material (7). Internal pressure of the heat storage unit is controlled and operation safety is guaranteed by adding the pressure release valve (4) and using a simple and convenient installation method.


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