APPARATUS AND METHOD FOR MEASURING CONCENTRATION OF NONAZEOTROPE REFRIGERANT MIXTURE, AND ABSORPTION TYPE, 1-STAGE COMPRESSING-ABSORBING TYPE AND 2-STAGE COMPRESSION-ABSORPTION TYPE HEAT PUMP HAVING THE SAME

摘要

PURPOSE: A liquid refrigerant concentration measuring device of temperature alternating evaporation mixed refrigerants, a method, and a heat pump of an absorption type, a single stage compression-absorption type, and a two stage compression-absorption type including the same are provided to reduce costs and to include a simple structure by being comprised of only a temperature sensor and a pressure sensor as the configuration to measure concentration. CONSTITUTION: A liquid refrigerant concentration measuring device of temperature alternating evaporation mixed refrigerants comprises a container (60), a temperature sensor (82), a pressure sensor (84), and a control unit (70). The liquid mixed refrigerants fill an internal storage space of the container by being drawn into one side, and the filled liquid refrigerant mixed refrigerants flow out to the other side when the temperature alternating evaporation mixed refrigerants in which the two kinds of the refrigerants including different evaporation pressure are mixed is in a saturated condition. The temperature sensor measures the temperature of the liquid mixed refrigerants. The pressure sensor measures the pressure of the container or the pressure of the saturated condition. The control unit includes a memory unit and a calculation unit. The memory unit stores data base on the relation between the temperature, the humidity, the concentration, and the saturated vapor pressure in the saturated condition of the liquid mixed refrigerants. The calculation unit assumes the humidity of the liquid mixed refrigerants to be a predetermined humidity and calculates the concentration of the liquid mixed refrigerants from the data base according to the temperature and the pressure measured by the temperature sensor and the pressure sensor.