Water-carrying cooling ceilings can be used as a supplement, if cooled-air temperature regulation systems are insufficient. The cooling effect is primarily achieved through the absorption of heat, with convection being a secondary function.
A cooling surface is used for cooling of outside air before injection into the building. A cooling surface can be an integrated part of an AHU or placed directly in an air injection duct.
COSP (Coefficient of system performance)
The COSP of a heat pump is based on the total heat extracted (also referred to as Q) in relation to the energy supplied to the heat pump (also referred to as W).
Cross flow heat exchanger
A cross-flow heat exchanger exchanges thermal energy from one airstream to another in an air handling unit (AHU). Unlike a rotary heat exchanger, a cross-flow heat exchanger does not exchange humidity and there is no risk of short-circuiting the airstreams.
A discharge de-superheater can be used in a cooling plant to produce domestic hot water. This is possible when there is a simultaneous demand for both cooling and hot domestic water in the building.