中央空调的制热原理
Heating principle of central air conditioning
压缩机吸入低压气体经过压缩机压缩变成高温高压气体，高温气体通过换热器把水温提高，同时高温气体会冷凝变成液体。液体再进入蒸发器进行蒸发，（蒸发器蒸发的同时也要有换热媒体，根据换热的媒体不同机器的型号结构也不同。常用的有风冷和地源。）液体经过蒸发器后变成低压低温气体，低温气体再次被压缩机吸入进行压缩。就这样循环下去，空调侧循环水就变成45-55度左右的热水了。热水经过管道送到需要采暖的房间，房间安装有风机盘管把热水和空气进行热交换实现制热目的。
The low-pressure gas inhaled by the compressor is compressed into high-temperature and high-pressure gas. The high-temperature gas raises the water temperature through the heat exchanger, and the high-temperature gas will condense into liquid. The liquid enters the evaporator for evaporation (the evaporator shall also have heat exchange medium when evaporating, and the model and structure of different machines shall be different according to the heat exchange medium. Commonly used are air cooling and ground source.) After the liquid passes through the evaporator, it turns into low-pressure and low-temperature gas, which is sucked in by the compressor again for compression. In this way, the circulating water on the air conditioning side will become hot water of about 45-55 degrees. The hot water is sent to the room that needs heating through the pipeline, and the room is installed with fan coil to exchange the hot water and air for the purpose of heating.