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Header
A header is a manifold, the purpose of which is to uniformly distribute coolant in pipe circuits in air coolers, dry coolers, evaporators and condensers.
HCFC (Hydrochlorofluorocarbon)
CFC and HCFC refrigerants are detrimental to the breakdown of the ozone layer and the greenhouse effect.
Heat pump
A heat pump is a system that can both cool, heat, and dehumidify air in a room, depending on the demand.
Heat exchanger
Heat exchangers are used in heating systems to separate two media, while at the same time transferring heat from one to the other.
Heat recovery
A great part of energy consumption in a ventilation system goes to heating outside air.
Heat rejection
Heat rejection is the excess heat from a cooling system which is removed by the condenser/cooling tower.
Heat transfer fins
Fins are used on all air coolers, dry coolers, evaporators and condensers that transfer energy from a liquid media to air or from air to liquid.
Heat requirement
A building’s heat requirement need is calculated based on its estimated heat exchange with the surroundings and the building’s users.
Heating surface
The heating surface can be an integrated part of the AHU, or be placed directly in the air intake duct.
Hot water circulation
Domestic hot water in pipes will cool due to heat loss when there has not been a withdrawal for quite some time.