Apparatus and method for measuring concentration of liquid-state refrigerant of nonazeotrope refrigerant mixture, and absorption type, 1-stage compressing-absorbing type and 2-stage compressing-absorbing type heat pump including the apparatus

摘要

An apparatus and method for measuring concentration of a liquid-state refrigerant of a nonazeotrope refrigerant mixture. A container is disposed in such a way that a liquid-state refrigerant mixture of the nonazeotrope refrigerant mixture in a saturated state is temporarily stored with set quality. By measuring temperature and pressure of the liquid-state refrigerant mixture, concentration of the liquid-state refrigerant can be calculated from a database regarding a relationship between a saturation vapor pressure, temperature, quality, and concentration of the previously-stored nonazeotrope refrigerant mixture in the saturated state. Thus, a configuration for measuring the concentration of the liquid-state refrigerant-absorbent mixture includes a container, a temperature sensor and a pressure sensor and thus is very simple and the cost for the configuration can be reduced. In addition, the container can be easily mounted on existing equipment without disturbance of a flow.

主权项

1. An apparatus for measuring concentration of a liquid-state refrigerant of a nonazeotrope refrigerant mixture, the apparatus comprising:
an absorber having a vapor refrigerant evaporated by an evaporator, wherein the vapor refrigerant is absorbed in a refrigerant-absorbent mixture; a regenerating device having a heating source capable of evaporating a part of a refrigerant from the refrigerant-absorbent mixture ejected from the absorber; a condenser condensing the evaporated refrigerant ejected from the regenerating device and transfers the condensed refrigerant to the evaporator, wherein the evaporated refrigerant flows into the condenser via a regenerating device vapor ejection passage; a container having a liquid-state refrigerant mixture of the nonazeotrope refrigerant mixture which flows from the regenerating device into one side of the container via a regenerating device liquid-state ejection passage and is filled in an internal storage space of the container, wherein the filled liquid-state refrigerant mixture is discharged from the other side of the container to an intermediate heat exchanger via the regenerating device liquid-state ejection passage, the intermediate heat exchanger being disposed between the absorber and the regenerating device and heat-exchanging the refrigerant-absorbent mixture ejected from the absorber with the filled liquid-state refrigerant mixture ejected from the regenerating device, wherein the regenerating device and the container are directly connected to the liquid-state ejection passage, wherein the container is disposed between the intermediated heat exchanger and the regenerating device; a temperature sensor that measures a temperature of the liquid-state refrigerant mixture; a pressure sensor that measures a pressure of the liquid-state refrigerant mixture in a saturated state or a pressure of the container; and a controller comprising a memory unit in which a database regarding a relationship between a saturation vapor pressure, temperature, quality, and concentration of the nonazeotrope refrigerant mixture in the saturated state is stored, and an arithmetic operation unit that calculates concentration of the liquid-state refrigerant mixture from the database based on the temperature and the pressure measured by the temperature sensor and the pressure sensor, assuming that quality of the liquid-state refrigerant mixture is set quality.