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Heat requirement
A building’s heat requirement need is calculated based on its estimated heat exchange with the surroundings and the building’s users.
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.
Heating surface
The heating surface can be an integrated part of the AHU, or be placed directly in the air intake duct.
HFC (Hydrofluorocarbon)
HFC as a refrigerant does not contribute to the breakdown of the ozone layer, but contributes to the greenhouse effect.
Hot water
Domestic hot water denotes the hot water that is used in a home for showering, washing, etc.
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.
Hot water exchanger
A hot water exchanger is used in production of domestic hot water.
Hot water vessel
A hot water vessel is used in production of domestic hot water.
Hydrogen sulphide
Hydrogen sulphide is a toxic and lethal gas produced in sewers and digesters under microbial anaerobic decomposition of organic matter.
Hydronics
Hydronics is the term describing the use of water as a heat-transfer medium in heating systems, and a cooling-transfer medium in cooling systems.