The principle of central air conditioning refrigeration

The principle of central air conditioning refrigeration The liquid Freon enters the evaporator through the capillary. The space suddenly increases and the pressure decreases. The liquid Freon will vaporize and absorb a lot of heat. The evaporator will become cold. The indoor unit fan will remove the indoor air from the evaporator. Blow through, so the cold air blows out from the indoor unit. Let's take a look at the cooling principle of the central air conditioner with the editor for your reference The liquid Freon enters the evaporator through the capillary. The space suddenly increases and the pressure decreases. The liquid Freon will vaporize and absorb a lot of heat. The evaporator will become cold. The fan of the indoor unit will remove the indoor air from the evaporator. Blow through, so the cold wind blows out from the indoor unit. Let's take a look at the cooling principle of the central air conditioner with the editor for your reference. Central air conditioning refrigeration uses the heat absorption during vaporization of the liquid and the exothermic effect during condensation to achieve refrigeration, and the liquid vaporizes to form steam. When the liquid is in a closed container, there is no other gas in the container except for the vapor generated by the liquid and the liquid itself. The liquid and the vapor will reach equilibrium under a certain pressure, and the vapor at this time is called saturation Steam, pressure is called saturation pressure, and temperature is called saturation temperature. The liquid no longer vaporizes during equilibrium, and if a portion of the steam is removed from the container at this time, the liquid must continually vaporize to generate a portion of steam to maintain this balance. The central air conditioning refrigeration liquid must absorb heat when it vaporizes. This heat is called latent heat of vaporization. The latent heat of vaporization comes from the object to be cooled, which cools the object to be cooled. In order for this process to continue, the steam must be continuously removed from the container and allowed to condense into a liquid before returning to the container. If the steam extracted from the container is directly condensed into steam, the temperature of the required cooling medium is lower than the evaporation temperature of the liquid. We hope that the condensation of the steam is performed at normal temperature, so the pressure of the steam needs to be increased to normal temperature Saturation pressure. Central air conditioning refrigeration host The refrigeration main unit allows the refrigerant to quickly freeze the circulating water through the compressor, and the temperature of the refrigeration cycle water decreases rapidly (generally the water temperature after refrigeration by the refrigeration main unit is about 7 ℃), this is the place provided by the central air conditioning cold source, which is frozen by the refrigeration main unit The chilled water is sent to the air-conditioned room by the chilled water pump. Central air conditioning refrigeration chilled water pump After the chilled water takes away the cooling capacity of the refrigerant, it exchanges heat with the air at the end of the air conditioning system (such as fan coil, air conditioning unit), and then returns to the chiller to take away the cooling capacity of the refrigerant after the temperature rises. Water circulation system, the pump on this system is called chilled water pump.

Central air-conditioning refrigeration and cooling water pump Refrigerant circulates in the chiller, and the temperature rises through the compressor. At this time, the temperature is lowered with water. This part of water is called cooling water. The cooling water takes away the heat generated by the refrigeration host through the cold cooling water pump, and then passes The cooling tower releases the heat into the air, and then returns to the chiller. This forms a cooling water circulation system. The pump on this system is the cooling water pump. Central air conditioning refrigeration cooling tower

The water with higher temperature is sent to the cooling tower by the cooling water pump, and the water flows from top to bottom through the cooling tower nozzle. On the one hand, the natural water is used to remove the heat from the water; on the other hand, the cooling fan drives the air to accelerate the movement. The air takes away heat while accelerating evaporation, allowing the water temperature to decrease. The cooling water after the temperature is lowered circulates again into the refrigeration host, taking away the waste heat generated by the refrigeration host, and so on.

Central air-conditioning refrigeration fan coil The fan coil air conditioning system places the unit composed of the fan and the coil directly in the room. During operation, hot or cold water flows in the coil as needed. The fan draws the indoor air into the unit, after filtering, it is cooled or heated by the coil Afterwards, it will be sent back to the room and circulated in this way to adjust the indoor temperature and humidity. Editor's summary: The principle of central air conditioning refrigeration is introduced here. For more information, you can follow okmarts.com information knowledge.

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The principle of central air conditioning refrigeration

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