Direct expansion air conditioning unit

Release date: 2024-12-19 09:54:27 Reading volume: 1508 Author: Keruite

Cooling capacity: 15KW - unlimitedBrand: Various brands of compressors, strict standard copper pipes

Cooling capacity: 15KW - unlimited
Brand: Various brands of compressors, strict standard copper pipes, and various brands of electrical appliances can be used.
Direct expansion air conditioning units include various forms of air conditioning products, such as unit air conditioning units, ceiling air conditioning units, ceiling mounted air duct units, multi split units (also known as "one to many" units, variable frequency multi split units, etc.), rooftop air conditioning units, as well as dehumidifiers, precision air conditioning units, etc.

Direct expansion air conditioning units include various forms of air conditioning products, such as unit air conditioning units, ceiling air conditioning units, ceiling mounted air duct units, multi split units (also known as "one to many" units, variable frequency multi split units, etc.), rooftop air conditioning units, as well as dehumidifiers, precision air conditioning units, etc.

A direct expansion air conditioning unit, in layman's terms, is a unit that comes with a compressor. The liquid refrigerant in its refrigeration system evaporates (expands) directly inside its evaporator coil to absorb heat from the air outside the coil (i.e. the indoor air of the air conditioner) and cool it, hence the name. The English for "direct expansion air conditioning unit" is: Direct Expansion Air Conditioning Unit， Synopsis: DX A/C or DX Air Conditioning Unit.

Just hold onto one thing firmly, that is: the direct expansion air conditioning unit directly exchanges heat between the refrigerant and the air that needs to be treated, without secondary heat exchange, that is, refrigerant air. The most common large-scale central air conditioning system, consisting of chillers and air conditioning terminal units, has a different heat exchange method from direct expansion air conditioning units. Instead, it uses refrigerant water air, where the refrigerant first absorbs heat from water to generate chilled water. The chilled water is then transported through pipelines to the fan coil units and other terminal units in the room, where it is circulated by the fan inside the unit to exchange heat with the chilled water inside the coil, producing "cold air" that is blown down.

That is to say, the direct expansion air conditioning unit is a "primary refrigerant" system.

Based on the above analysis, it can be seen that household air conditioners, including wall mounted units, cabinet units, window units, ceiling units, etc., are all direct expansion air conditioning units. In shopping malls, office buildings, and other places, the central air conditioning system with a refrigeration station (refrigeration main room) is obviously a water system and does not belong to an expansion type air conditioning unit.

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