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Working principle of air conditioner refrigerator

Working principle of air conditioner refrigerator The basic principle of HVAC chiller using refrigeration For example, the kind used in the laboratory or industrial environment, there are many types of chillers on the market, this is an overview of a popular steam compression chiller. What are the components of an HVAC chiller? The steam compression chiller has four main components: 1. Compressor: pump refrigerant; 2. Evaporator: heat enters the refrigerant inside the component from external water; 3. Condenser: transfer the heat in the refrigerant to the cooling water outside the system; 4.Thermal expansion valve or refrigerant metering device: adjust the flow and pressure of refrigerant; 5.Basic Physics of Heat Transfer 6.To understand how HVAC chillers work, it is important to first understand some basic heat transfer physics. Heat transfer is the movement of heat from one place to another, and heat is always moved from a hot place to a cold one. local. Through HVAC training, you learned that this process can be controlled to achieve a comfortable indoor climate. For example, heat insulation can slow the transfer of heat from indoor to outdoor. 7.The HVAC chiller changes the physical state of the refrigerant and transfers heat from one area to another. The law of pressure-temperature relationship means that the pressure of the refrigerant increases and the temperature increases, while the pressure decreases and the temperature decreases. When cooling As the refrigerant circulates through the HVAC chiller, various components change their pressure and temperature, causing them to boil into gas and condense into liquid. During the transition from liquid to gas, the refrigerant absorbs heat and when the refrigerant returns to liquid When releasing heat, the refrigeration cycle of the air conditioner chiller 1. Compressor to condenser: The compressor delivers hot refrigerant gas to the condenser, and the heat of the refrigerant is transferred to the cold water outside the component in the condenser. When it cools, the refrigerant becomes liquid; 2. Condenser to metering device: The metering device restricts the flow of liquid refrigerant to reduce its pressure, thereby lowering its boiling point, and the refrigerant quickly vaporizes into a gas during adiabatic flash evaporation or automatic refrigeration; 3. Metering device to evaporator: When the refrigerant state becomes gas, the metering device sends it to the evaporator. While evaporating, the refrigerant absorbs heat from the warm water outside the chiller and cools the surrounding area; 4.Evaporator to compressor: the hot refrigerant gas is transported from the evaporator to the compressor, where the pressure and temperature rise in the compressor, and when hot gas is generated again, the refrigerant enters the condenser, releases heat, and restarts the cycle; Technical progress of HVAC chillers Technological advances will have an impact on the operation of HVAC chillers, thereby improving their efficiency level and service life. Recent technological breakthroughs include the creation of oil-free chillers (with magnetic or ceramic bearings) and heat recovery chillers ( Low-level building heat can be used to warm the room). Those students studying HVAC in university schools are likely to use a variety of chillers after entering this field, including these new and efficient models.

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