HOT WATER SUPPLYING DEVICE UTILIZING SOLAR HEAT

摘要

PURPOSE:To maintain hot water with stable temperature at all times and consequently improve operational convenience by a method wherein the water in a heat exchanger is heated in case that the solar heat alone is not enough for the required heat quantity by covering the outer periphery of a heat exchanger comprising a part of a heat collecting circuit with an auxiliary heater in order to store hot water with desired temperature in a hot water storage tank. CONSTITUTION:An auxiliary electric heater 14 consisting of a planar heat generating body is wound so as to closely contact with the outer periphery of a heat exchanger 3'. On the days with poor insolation or small collected heat energy and with low atmospheric temperature, an energizing switch 20 is turned ON by hand. When the water temperature at the inlet of the heat exchanger 3' is lower than the desired temperature set by a temperature controller 19, the temperature on the water side rises very quickly by receiving heat from both flon gas and the auxiliary heater 14. After that, when said water temperature reaches the set temperature, the temperature controller 19 stops the energizing the power to the auxiliary heater 14.