中央空调系统可以分为三类，中央空调水系统、氟系统和风系统。水系统中央空调以水为冷媒 ，比传统氟系统更为节能舒适。

The central air conditioning system can be divided into three categories, the central air-conditioning water system, the fluorine system and the wind system. The central air-conditioning system of water system uses water as refrigerant, which is more energy efficient and comfortable than the traditional fluorine system.

    水系统型即为一小型的半集中式风机盘管系统，将室内负荷全部由冷热水机组来承担。各房间风机盘管通过管道与冷热水机组相连，靠所提供的冷热水来供冷和供热。水系统布置灵活，独立调节性好，舒适度非常高，能满足复杂房型分散使用、各个房间独立运行的需要。另外，目前新型的水系统空调也是地板采暖系统应用的最佳的解决方案之一，通过与地板采暖的有效结合，采用中低水温大面积低温辐射采暖的方式，比传统的风机盘管采暖系统更加舒适节能。

The water system is a small semi centralized fan coil system, and the indoor load is borne by the chiller unit. The fan coil units of each room are connected with the chiller unit through the pipeline, and the cold and hot water provided is used for cooling and heating. The water system is flexible in layout, good in independent regulation and high in comfort. It can meet the needs of separate use of complex rooms and independent operation of rooms. In addition, the new type of water system air conditioning is also one of the best solutions for the application of floor heating system. Through the effective combination of floor heating, the use of low temperature and large area low temperature radiation heating system is more comfortable and energy saving than the traditional fan coil heating system.

    工作原理

Working principle

    典型中央空调机组主要由冷冻水循环系统、冷却水循环系统及主机三部分组成:

The typical central air conditioning unit consists of three parts: the chilled water circulation system, the cooling water circulation system and the main engine.

         1、冷冻水循环系统

Frozen water circulation system 1

    该部分由冷冻泵、室内风机及冷冻水管道等组成。从主机蒸发器流出的低温冷冻水由冷冻泵加压送入冷冻水管道(出水)，进入室内进行热交换，带走房间内的热量，最后回到主机蒸发器(回水)。室内风机用于将空气吹过冷冻水管道，降低空气温度，加速室内热交换。

This part is made up of refrigerating pump, indoor fan and chilled water pipe. The cryopreservation water from the mainframe evaporator is pressurized into the frozen water pipe (water) by the cryoppump, and enters the room for heat exchange, taking away the heat in the room, and finally returning to the main engine evaporator (return water). Indoor air blower is used to blow air through the chilled water pipe, reduce air temperature and accelerate indoor heat exchange.

         2、 冷却水循环部分

Cooling water circulation part 2

    该部分由冷却泵、冷却水管道、冷却水塔等组成。冷冻水循环系统进行室内热交换的同时，必将带走室内大量的热能。该热能通过主机内的冷媒传递给冷却水，使冷却水温度升高。冷却泵将升温后的冷却水压入冷却水塔(出水)，使之与大气进行热交换，降低温度后再送回主机冷凝器(回水)。

This part is made up of cooling pump, cooling water pipe, cooling tower and so on. The chilled water circulation system will carry out indoor heat exchange and will take away a lot of indoor thermal energy. The heat energy is transferred to the cooling water through the refrigerant in the main engine, so that the temperature of the cooling water increases. The cooling pump will press the cooling water after heating up into the cooling tower (water) to heat it with the atmosphere, and then send it back to the condenser (backwater) after lowering the temperature.

         3、 主机

Host 3, host

    主机部分由压缩机、蒸发器、冷凝器及冷媒(制冷剂)等组成，其工作循环过程如下:

The main engine part consists of a compressor, evaporator, condenser and refrigerant, and its working cycle is as follows:

首先低压气态冷媒被压缩机加压进入冷凝器并逐渐冷凝成高压液体。在冷凝过程中冷媒会释放出大量热能，这部分热能被冷凝器中的冷却水吸收并送到室外的冷却塔上，最终释放到大气中去。随后冷凝器中的高压液态冷媒在流经蒸发器前的节流降压装置时，因为压力的突变而气化，形成气液混合物进入蒸发器。冷媒在蒸发器中不断气化，同时会吸收冷冻水中的热量使冷冻水达到较低温度。最后，蒸发器中气化后的冷媒又变成了低压气体，重新进入了压缩机，如此循环往复。中央空调系统可以分为三类，中央空调水系统、氟系统和风系统。水系统中央空调以水为冷媒 ，比传统氟系统更为节能舒适。

First, the low-pressure gaseous refrigerant is pressurized by the compressor to enter the condenser and gradually condenses into high pressure liquid. In the process of condensation, the refrigerant releases a lot of heat, which is absorbed by the cooling water in the condenser and sent to the cooling tower outside, and eventually released into the atmosphere. The high pressure liquid cooling medium in the condenser is then vaporized to form a gas liquid mixture into the evaporator when the throttle pressure lowering device flows through the evaporator. The refrigerant continuously vaporized the evaporator and absorbed the heat from the chilled water to make the chilled water reach a lower temperature. Finally, the vaporizer of the evaporator turns into a low pressure gas and reenters the compressor. The central air conditioning system can be divided into three categories, the central air-conditioning water system, the fluorine system and the wind system. The central air-conditioning system of water system uses water as refrigerant, which is more energy efficient and comfortable than the traditional fluorine system.

    水系统型即为一小型的半集中式风机盘管系统，将室内负荷全部由冷热水机组来承担。各房间风机盘管通过管道与冷热水机组相连，靠所提供的冷热水来供冷和供热。水系统布置灵活，独立调节性好，舒适度非常高，能满足复杂房型分散使用、各个房间独立运行的需要。另外，目前新型的水系统空调也是地板采暖系统应用的最佳的解决方案之一，通过与地板采暖的有效结合，采用中低水温大面积低温辐射采暖的方式，比传统的风机盘管采暖系统更加舒适节能。

The water system is a small semi centralized fan coil system, and the indoor load is borne by the chiller unit. The fan coil units of each room are connected with the chiller unit through the pipeline, and the cold and hot water provided is used for cooling and heating. The water system is flexible in layout, good in independent regulation and high in comfort. It can meet the needs of separate use of complex rooms and independent operation of rooms. In addition, the new type of water system air conditioning is also one of the best solutions for the application of floor heating system. Through the effective combination of floor heating, the use of low temperature and large area low temperature radiation heating system is more comfortable and energy saving than the traditional fan coil heating system.

    工作原理

Working principle

    典型中央空调机组主要由冷冻水循环系统、冷却水循环系统及主机三部分组成:

The typical central air conditioning unit consists of three parts: the chilled water circulation system, the cooling water circulation system and the main engine.

         1、冷冻水循环系统

Frozen water circulation system 1

    该部分由冷冻泵、室内风机及冷冻水管道等组成。从主机蒸发器流出的低温冷冻水由冷冻泵加压送入冷冻水管道(出水)，进入室内进行热交换，带走房间内的热量，最后回到主机蒸发器(回水)。室内风机用于将空气吹过冷冻水管道，降低空气温度，加速室内热交换。

This part is made up of refrigerating pump, indoor fan and chilled water pipe. The cryopreservation water from the mainframe evaporator is pressurized into the frozen water pipe (water) by the cryoppump, and enters the room for heat exchange, taking away the heat in the room, and finally returning to the main engine evaporator (return water). Indoor air blower is used to blow air through the chilled water pipe, reduce air temperature and accelerate indoor heat exchange.

         2、 冷却水循环部分

Cooling water circulation part 2

    该部分由冷却泵、冷却水管道、冷却水塔等组成。冷冻水循环系统进行室内热交换的同时，必将带走室内大量的热能。该热能通过主机内的冷媒传递给冷却水，使冷却水温度升高。冷却泵将升温后的冷却水压入冷却水塔(出水)，使之与大气进行热交换，降低温度后再送回主机冷凝器(回水)。

This part is made up of cooling pump, cooling water pipe, cooling tower and so on. The chilled water circulation system will carry out indoor heat exchange and will take away a lot of indoor thermal energy. The heat energy is transferred to the cooling water through the refrigerant in the main engine, so that the temperature of the cooling water increases. The cooling pump will press the cooling water after heating up into the cooling tower (water) to heat it with the atmosphere, and then send it back to the condenser (backwater) after lowering the temperature.

         3、 主机

Host 3, host

    主机部分由压缩机、蒸发器、冷凝器及冷媒(制冷剂)等组成，其工作循环过程如下:

The main engine part consists of a compressor, evaporator, condenser and refrigerant, and its working cycle is as follows:

首先低压气态冷媒被压缩机加压进入冷凝器并逐渐冷凝成高压液体。在冷凝过程中冷媒会释放出大量热能，这部分热能被冷凝器中的冷却水吸收并送到室外的冷却塔上，最终释放到大气中去。随后冷凝器中的高压液态冷媒在流经蒸发器前的节流降压装置时，因为压力的突变而气化，形成气液混合物进入蒸发器。冷媒在蒸发器中不断气化，同时会吸收冷冻水中的热量使冷冻水达到较低温度。最后，蒸发器中气化后的冷媒又变成了低压气体，重新进入了压

First, the low-pressure gaseous refrigerant is pressurized by the compressor to enter the condenser and gradually condenses into high pressure liquid. In the process of condensation, the refrigerant releases a lot of heat, which is absorbed by the cooling water in the condenser and sent to the cooling tower outside, and eventually released into the atmosphere. The high pressure liquid cooling medium in the condenser is then vaporized to form a gas liquid mixture into the evaporator when the throttle pressure lowering device flows through the evaporator. The refrigerant continuously vaporized the evaporator and absorbed the heat from the chilled water to make the chilled water reach a lower temperature. Finally, the refrigerant in the evaporator becomes low pressure gas and reenters the pressure.