The AHU coil is one of the most important parts of the air handling units. It is made up of copper tubing of several turns and covered with the fins to increase the heat transfer efficiency of the AHU coil. Direct expansion (DX) coils, most common coil type of AHU, are typically either a slab coil, an A-Coil, or an N-Coil with each coil serving its own purpose for configuration and heat exchange inside the air handler. The type of coil inside the air handler depends on the design requirements of the air handler and what the manufacturer has available for the design requirements. In direct expansion (DX) type of the central air conditioning plants the refrigerant flows though the cooling coil, which also acts as the evaporator of the plant. In case of the chilled water system the chilled water from the chiller flows through the cooling coil. What is important about the coil is the heat exchange ability of the coils.
We provide custom solution for DX type and chilled water coil for your unique business requirements.
The AHU is used to control the following parameters of the space:temperature, humidity, air movement and air cleanliness. The temperature is controlled by AHU coil within the air handling unit air stream, such coils may be direct or indirect in relation to the medium providing the heating or cooling effect. If dehumidification is required, then the cooling coil is employed to over-cool so that the dew point is reached and condensation occurs.