How does an AHU unit work?

How does an AHU unit work?

The AHU is normally a large metal box which connects to the ductwork that channels conditioned air throughout a building and returns it back to the AHU. AHU’s supply fresh air to the room. The units take air from the outside, filter it and recondition it (cooled by a cooling coil or heated by a heating coil).

What is a chiller in an HVAC system?

A chiller is a machine that removes heat from a liquid coolant via a vapor-compression, adsorption refrigeration, or absorption refrigeration cycles. This liquid can then be circulated through a heat exchanger to cool equipment, or another process stream (such as air or process water).

What is AHU and chiller?

Water cooled chillers are typically located in the basement or lowest floor of a building. The chiller produces chilled water and pushes this around the building to Air Handling Units (AHU’s) and Fan Coil Units (FCU’s) etc. These units circulate air around the local space as well as the building.

What does Ahu mean in air conditioning?

AHU Mean. Air Handling Unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning system.

What is the difference between an ahu and an avvav?

VAV and AHU are two different components of a central air conditioning system that serves completely different purposes. AHU (Air Handling Unit) is a cold air producing device which pump cold supply air into the central air conditioning system ductwork.

How is the air velocity inside a UCV canopy measured?

The air velocity inside a UCV canopy needs to be precisely measured to ensure the accuracy across the entire canopy zone and for each quadrant. The velocity is measured at both 1 metre and 2 metre heights from the floor to simulate patient operating height and the speed at which the air enters the critical zone.