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  3. How does the air conditioner cool ...

How does the air conditioner cool

Why does the air conditioner cool? How is the air conditioner cooled? What are the principles of air conditioning and refrigeration?

Baixiang Pressure Control will answer these basic questions one by one:


Refrigeration process:The liquid Freon passes through the capillary tube and enters the evaporator (indoor unit). At this time, the space suddenly increases and the pressure decreases, and the liquid Freon will vaporize.Since it is an endothermic process from liquid to gas, it will absorb a lot of heat and the evaporator will become cold.The fan of the indoor unit blows the indoor air through the evaporator, so the indoor unit blows out cold air; then the gaseous Freon returns to the compressor to continue compression and continue to circulate.


Heating process:The heating air conditioner has a component called a four-way valve, which makes the flow direction of Freon in the condenser and evaporator opposite to that of cooling. Therefore, when heating, the outdoor air blows cold air, and the indoor unit blows hot air.In fact, it is the principle of discharging heat during liquefaction (changing from gas to liquid) and absorbing heat during vaporization (changing from liquid to gas) that was learned in junior high school physics.


The refrigeration principle of lithium bromide air-conditioning is specially proposed here,Unlike compression air conditioners, the working fluid used in absorption refrigeration is usually a binary solution composed of two substances with different boiling points.Among them, low-boiling substances are refrigerants, and high-boiling substances are absorbents.Therefore, binary solutions are also called refrigerants。The so-called binary solution refers to a mixture of two substances that do not have a chemical effect on each other.The various physical properties of this homogeneous mixture (such as pressure, temperature, concentration, etc.) are completely consistent throughout the mixture, and they cannot be separated into the original constituent substances by pure mechanical precipitation or centrifugation.


Its refrigeration principle is divided into two parts

1、The concentrated solution flowing out of the generator will flow into the absorber after being cooled and depressurized by the heat exchanger, and mixed with the original solution of the absorber to form a concentrated solution of intermediate concentration.The intermediate concentration solution is transported and sprayed by the absorber pump, and the refrigerant vapor from the evaporator is absorbed into a dilute solution.The dilute solution is sent to the generator by the generator pump, and the refrigerant vapor is generated by the heat source again to form a concentrated solution, which enters the next cycle.

2、The binary solution is heated and boiled by the heat source in the generator, and the refrigerant vapor produced is condensed into refrigerant liquid in the condenser.The liquid refrigerant enters the evaporator after being throttled by the U-shaped tube, and is sprayed under the low pressure condition through the evaporator. The liquid refrigerant evaporates and absorbs the heat of the refrigerant to produce a refrigeration effect.


Any refrigeration equipment mentioned above has four major components(Compressor, condenser, evaporator, throttling device),The refrigerant absorbs or releases heat through physical state changes in the refrigerator to achieve the effect of cooling or heating.


Changzhou Baixiang Pressure Control is a Chinese company specializing in the production of various pressure sensors and pressure switches.Our products are used in various industries.  there are several pressure switches and sensors used in air conditioning systems.Welcome to our official website for details

 

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