What Is The Use of Heating Coil And Cooling Coil In AHU?

What is the use of heating coil and cooling coil In AHU?

In an AHU (Air Handling Unit):

The heating coil is used to raise the temperature of the air passing through it. It helps to provide warm air for heating a space. This is especially important in cold weather or when a specific temperature increase is needed. It can use various heat sources such as hot water, steam, or electric resistance.

The cooling coil, on the other hand, is employed to lower the temperature of the air. It typically works in conjunction with a refrigerant to remove heat from the air and cool it down. This is crucial for maintaining a comfortable environment during hot weather or to achieve a desired cooling effect. The cooling coil helps to dehumidify the air as well.

Both the heating coil and cooling coil play essential roles in regulating the temperature and conditions of the air supplied by the AHU to different areas within a building or system. They contribute to creating a controlled and comfortable indoor environment.

For example, in a commercial building during winter, the heating coil in the AHU warms the incoming air to keep the occupants comfortable, while in summer, the cooling coil cools the air to provide relief from the heat.