AIR-CONDITIONING SYSTEM, INTEGRATED AIR-CONDITIONING SYSTEM, AND CONTROL DEVICE

摘要

In the present invention a tank (22) which temporarily stores a liquid is provided on a pipe (51) of an indirect external air cooler, and a third heat exchanger (23) is provided in the tank (22). A three-way valve (21) is provided on a refrigerant pipe (52) of a general air conditioner, and switching is controlled such that refrigerant is supplied either to an evaporator (61a) or the third heat exchanger (23). When the indirect external air cooler is operating at maximum capacity and joint operation with the general air conditioner is performed, and there is excess cold energy even when a compressor (55) is operating at a minimum rotational frequency, the system switches to a state wherein the refrigerant is supplied to the third heat exchanger (23), and the excess cold energy is stored in the tank (22) by means of a heat exchange with the liquid in the tank (22).