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What does DX cooling mean?

Views: 9     Author: Site Editor     Publish Time: 2023-03-02      Origin: Site


DX cooling, also known as direct expansion cooling, is a type of air conditioning system that uses a refrigerant to cool the air directly. In this system, the refrigerant is compressed by a compressor, which raises its temperature and pressure. The hot refrigerant gas is then circulated through a coil in the air handler, where it releases its heat and cools down, becoming a cool liquid.


The cool liquid refrigerant then flows through an expansion valve, which reduces its pressure and allows it to evaporate. As the refrigerant evaporates, it absorbs heat from the air passing over the evaporator coil, cooling the air. The cool air is then distributed through the building by a duct system or air handler.


DX cooling is commonly used in residential and commercial air conditioning systems, and is popular due to its efficiency and low cost.


In DX cooling, the refrigerant used can be a variety of substances, such as R-22, R-410A, or R-134a. However, due to environmental concerns, some refrigerants are being phased out in favor of more environmentally-friendly alternatives.


DX cooling is often used in split air conditioning systems, where the compressor and condenser are located outside the building and the evaporator is located inside. This type of system is less complex and less expensive than other types of air conditioning systems, such as chilled water or central plant systems.


One disadvantage of DX cooling is that it can struggle to maintain consistent temperatures in large spaces, as the cooled air tends to be distributed from a single point. Additionally, the system can be noisy, as the compressor is located outdoors and can generate significant noise when running.


Overall, DX cooling is a widely-used and cost-effective option for air conditioning.

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