LOW TEMPERATURE WASTE HEAT UTILIZING ABSORPTION TYPE REFRIGERATING PLANT AND CONTROLLING METHOD THEREFOR

摘要

PURPOSE:To use low temperature waste heat which cannot be used as a high temperature heat source, as a drive heat source by connecting via a tube for guiding hot water to be discharged from a regenerator of an absorption type refrigerator to an evaporator and the regenerator of an absorption heat pump, and a tube for returning low temperature water to be discharged from an evaporator and a regenerator of the pump to a waste heat source. CONSTITUTION:Low temperature waste heat is guided to an absorber 18 of an absorption type heat pump 2 via hot water, etc., and heated to a temperature to be used as a high temperature heat source of an absorption type refrigerator 1. The heated waste heat is guided to a regenerator 3 of the refrigerator 1, heat is removed from an evaporator 6 for forming an absorption refrigerating cycle to room cool by an indoor heat exchanger 26. Then, waste heat circulating water from the regenerator 3 of the refrigerator 1 is guided to an evaporator 18 and a regenerator 16 of the pump 2. A controller 31 has functions of operating a flowrate regulating three-way valve in response to a signal obtained by temperature sensors 27, 28, 29, regulating temperature rising width of the low temperature waste heat by the pump 2 and maintaining a high heat using efficiency. Thus, the low temperature waste heat which is used only for hot water supply and room heating can be used for room cooling.