Method for determining pipe diameter, device for determining pipe diameter, and refrigeration device

摘要

Provided is a method for determining a pipe diameter of a refrigeration device capable of reducing a refrigerant to be filled, a device for determining a pipe diameter, and a refrigeration device. It is a method of determining the pipe diameter of the liquid-side refrigerant communication pipe 5 in the refrigeration device 1 capable of performing cooling operation and heating operation, and cooling provided by the outdoor unit 2 and the indoor units 4a and 4b to be mounted. The pipe diameter of the liquid-side refrigerant communication pipe 5 is determined based on the ability and the heating ability.