//DX coil
DX coil 2020-01-22T00:41:56+00:00

DX coil

DX coil

DX coil


Direct expansion coil (DX coil)

Server room cooling system

Internet data center cooling system

More DX coil…..

Direct expansion coil or DX coil is Yehjeh’s most important production. Compared with water coils, not only more difficult process , it requires more complicated copper fittings brazing and circuit design, more high-levels inspection standards. The quality and stability of products also need to be higher level to prevent leakage of filled refrigerant.

In direct expansion system, there is possibility of refrigerant leakage for long distances, and the cost of the refrigerant would be high. Also the pressure drop in the line would decrease evaporator coefficient of performance and efficiency.The direct expansion coil is preferred for air conditioning purposes, where the evaporator is very near to the compressors. This is direct method of cooling the substance and, therefore quite efficient.

A direct expansion air conditioning unit, also called a DX unit, cools indoor air using a condensed refrigerant liquid. The DX coil cools air by passing the condensed refrigerant through a heat exchanger inside the building to be cooled. In this part of the unit, called the evaporator, the refrigerant expands as it absorbs heat, eventually converting to a gas.

Advantages of Direct Expansion System: low installation costs, ease to adjust and balance the system, minimum ceiling or wall space needed, low energy consumption, low maintenance costs. individual section can be operated without running the entire system in the building, comfort under varying load conditions and good relative humidity control.

We run 100% bubble leak testing consists of pressurizing the coils with Nitrogen,submerging it into a water tank and watching for escaping bubbles. Before we ship your coil,we run all of our products through a rigorous final inspection check list. We believe quality mindset is essential in any organization to be successful and also sustain that success.