SOLAR WATER HEATING SYSTEM

摘要

The present invention relates to a solar water heating system including: a solar collector to which solar heat is collected; a solar collector circulation pipe adapted to circulate an operating medium on which the solar heat collected by the solar collector is accumulated therealong; a thermal storage tank in which the operating medium and the water used for living are heat-exchanged; a hot water circulation pipe communicating with the thermal storage tank; a freezing prevention valve located on one side of the hot water circulation pipe and adapted to be open and closed to allow the water in the thermal storage tank to selectively flow along the hot water circulation pipe; and a controller adapted to control the operation of the freezing prevention valve, thereby preventing the hot water circulation pipe from being frozen and destructed.