Cooling cycle of chiller

The cooling cycle of the chiller is its core working principle, which transfers heat from one place to another through a series of physical processes to achieve the cooling effect. The following are the basic steps of the cold cycle of the cold water mechanism:

1. Evaporation process

Evaporator: The evaporator in the chiller is the first step in the refrigeration cycle. Here, low pressure and low temperature refrigerant liquid enters the evaporator and absorbs heat from the surrounding medium (such as water or air). Due to heat absorption, the refrigerant liquid evaporates into a gas.

Heat absorption: Through evaporation, the refrigerant absorbs heat from the water, causing the temperature of the water to decrease, thus achieving refrigeration.

2. Compression process

Compressor: The evaporated refrigerant gas is inhaled by the compressor, and the compressor compresses it into high pressure and high temperature gas. This process consumes energy, usually driven by electricity.

Gas heating: During the compression process, the pressure and temperature of the refrigerant are significantly increased.

3. Condensation process

Condenser: High-pressure and high-temperature refrigerant gas enters the condenser, and the condenser releases the heat of the refrigerant through heat exchange with the external environment (usually air or water).

Liquefaction: After the release of heat, the refrigerant gas cools and turns into a liquid. This process is usually accompanied by a loss of pressure and a decrease in temperature of the gas.

4. Expansion process

Expansion valve: The high-pressure liquid refrigerant after condensation flows through the expansion valve. The role of the expansion valve is to reduce the pressure of the refrigerant and make it expand rapidly.

Pressure reduction: After the expansion valve, the pressure and temperature of the refrigerant will be reduced, forming a low pressure and low temperature refrigerant liquid, ready to enter the evaporator to complete a complete refrigeration cycle.

Sum up

These four processes form a closed-loop cycle in which the refrigerant continuously absorbs and releases heat, providing a cooling effect. The efficiency and effectiveness of the entire refrigeration cycle depend on many factors such as the design of the equipment, the choice of refrigerant, and environmental conditions. By adjusting each link, different cooling requirements and effects can be achieved.

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