Heating
51heating degree day (HDD) — A day in which the average daily temperature is less than 65 degrees Fahrenheit, and therefore likely to be a day in which people turn on their heat. A heating degree day is assigned a value that represents the number of degrees that days average …
52Heating Degree Day(s) — (HDD) The number of degrees per day that the daily average temperature (the mean of the maximum and minimum recorded temperatures) is below a base temperature, usually 65 degrees Fahrenheit, unless otherwise specified; used to determine indoor… …
53Heating Value — The amount of heat produced from the complete combustion of a unit of fuel. The higher (or gross) heating value is that when all products of combustion are cooled to the pre combustion temperature, water vapor formed during combustion is… …
54Heating surface — Surface Sur face , n. [F. See {Sur }, and {Face}, and cf. {Superficial}.] 1. The exterior part of anything that has length and breadth; one of the limits that bound a solid, esp. the upper face; superficies; the outside; as, the surface of the… …
55heating oils — Trade term for the group of distillate fuel oils used in heating homes and buildings as distinguished from residual fuel oils used in heating and power installations. Both are burner fuel oils …
56Heating Seasonal Performance Factor — (HSPF) The measure of seasonal or annual efficiency of a heat pump operating in the heating mode. It takes into account the variations in temperature that can occur within a season and is the average number of Btu of heat delivered for every… …
57Heating seasonal performance factor — A representation of the total heating output of a central air conditioning heat pump in Btus during its normal usage period for heating, divided by the total electrical energy input in watt hours during the same period, as determined using the… …
58heating power — šilumingumas statusas T sritis Standartizacija ir metrologija apibrėžtis Šilumos kiekis, išsiskiriantis sudegus 1 kg skystojo ar kietojo kuro arba 1 m³ degiųjų dujų. atitikmenys: angl. caloric power; caloricity; calorific power; heat caloric… …
59heating value — šilumingumas statusas T sritis Standartizacija ir metrologija apibrėžtis Šilumos kiekis, išsiskiriantis sudegus 1 kg skystojo ar kietojo kuro arba 1 m³ degiųjų dujų. atitikmenys: angl. caloric power; caloricity; calorific power; heat caloric… …
60heating power — šilumingumas statusas T sritis chemija apibrėžtis Šilumos kiekis, išsiskiriantis sudegus 1 kg skystojo ar kietojo kuro arba 1 m³ degiųjų dujų. atitikmenys: angl. caloric power; caloricity; calorific power; heat caloric power; heat calorific… …
