COMBINED COOLING AND HEATING PROCESS AND DEVICE FOR CONDITIONING A ROOM

摘要

A combined cooling and heating process for conditioning a room, and a device for carrying out the process, particularly for use in railroad passenger coaches. When the room is to be heated and no longer cooled, two valves are switched so that the process air flows through the units required for cooling, such as a heat exchanger and regenerator, without heat exchange. The air heated by the compressor arrives in the useful heat exchanger via a bypass line. The air which is cooled in the useful heal exchanger, but which is still under pressure, is directed via another bypass line to a turbine, where it is expanded and released into the atmosphere. In so doing, the air of the room to be heated is sucked in by a pre-compressor. 11