Refrigerant amount management apparatus and refrigerant amount management system

摘要

A refrigerant formed by connecting a heat source side unit having a compressor, a heat source side heat exchanger, and a supercooler, and at least one load side unit having a load side expansion valve and a load side heat exchanger by a pipe. A refrigerant quantity management device that manages the quantity of refrigerant filled in a circuit. The refrigerant amount management device is a temperature efficiency calculation unit that periodically obtains the temperature efficiency and stores it in the storage unit, and an output having a function of causing the display unit to display information indicating the temperature efficiency within the set period stored in the storage unit And a control unit.