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[Chemical Knowledge]：Operation principle of chiller

Read： 556 Time：19months ago Source：Transform the World with Simplicity

A chiller is a device that uses refrigeration technology to cool water to a specific temperature and deliver it to various equipment and systems for cooling. Its working principle can be roughly divided into four steps. The first step

is that the refrigerant absorbs heat from the low temperature region. The refrigerant passes through the evaporator and absorbs heat from the water to become steam, thereby reducing the temperature of the water. The second step
the
is to transport the refrigerant to the condenser. In this process, the refrigerant changes from the vapor state to the liquid state, releasing the absorbed heat. When the refrigerant temperature in the condenser is higher than the air temperature, it will reduce the temperature through the fan cooler, causing the refrigerant to condense in the condenser. The third step
the
is to pass the liquid refrigerant through a throttle valve or expansion device, reduce the pressure, and allow the refrigerant vapor/liquid mixture to enter the evaporator from the expansion valve, and repeat step 1. The fourth step
the
is to deliver the cooling water to a cooling load (such as an air cooling device or a mixture cycle) so that it will absorb heat and repeat step 1.

In addition, the chiller is composed of the following components:

1. Compressor: Its function is to compress the refrigerant from the low-pressure area to the high-pressure area.

2. Condenser: Its function is to transfer the heat in the compressed refrigerant to the surrounding air.

3. Evaporator: Its function is to make the refrigerant absorb heat from the water and change it from liquid to gas.

4. Throttle valve: Its function is to reduce the pressure of the refrigerant, so that processes 1 and 3 occur.

chillers are widely used in industrial, commercial, medical, hotel, telecommunications and public buildings and other fields. Their advantages include energy saving, high efficiency, easy maintenance, and suitable for sustainable energy solutions. The operation principle of

chiller is of great significance for its operation and maintenance in various application fields. Understanding how chillers work can help us better utilize and maintain this useful equipment.