heat value
71u-value — ˈ ̷ ̷ ¦ ̷ ̷ (ˌ) ̷ ̷ noun Usage: usually capitalized U Etymology: from unit : a measure of the heat transmission through a building part (as a wall or window) or a given thickness of a material (as insulation) with lower numbers indicating better… …
72Latent heat — In thermochemistry, latent heat is the amount of energy in the form of heat released or absorbed by a substance during a change of phase state(i.e. solid, liquid, or gas), ndash; also called a phase transition.cite book | author=Perrot, Pierre |… …
73Ground-coupled heat exchanger — Earth cooling tubes or earth warming tubes (also known as ground coupled heat exchangers) utilize the earth s near constant subterranean temperature to warm or cool air for residential, agricultural or industrial uses. They are often a viable and …
74mechanical equivalent of heat — n the value of a unit quantity of heat in terms of mechanical work units with its most probable value in cgs measure being 4.1855 × 107 ergs per calorie symbol J called also Joule s equivalent …
75U-value — or U factor A measure of how well heat is transferred by the entire window the frame, sash and glass either into or out of the building. U value is the opposite of R value. The lower the U factor number, the better the window will keep heat… …
76gross calorific value — (gross heat of combustion at constant volume), Qv(gross), n the heat produced by combustion of unit quantity of a solid or liquid fuel when burned at constant volume in an oxygen bomb calorimeter under specified conditions, with the resulting… …
77specific heat — n 1) the ratio of the quantity of heat required to raise the temperature of a body one degree to that required to raise the temperature of an equal mass of water one degree 2) the heat in calories required to raise the temperature of one gram of… …
78Linguistic value — is a term used in knowledge representation. It is simply knowledge from an expert(s) in a particular field that contains no nominal value, just knowledge. That knowledge is given a nominal value for use as a point of reference. Example of… …
79Implied heat rate — A calculation of the day ahead electric price divided by the day ahead natural gas price. Implied heat rate is also known as the ‘break even natural gas market heat rate,’ because only a natural gas generator with an operating heat rate… …
80face value — Face Face (f[=a]s), n. [F., from L. facies form, shape, face, perh. from facere to make (see {Fact}); or perh. orig. meaning appearance, and from a root meaning to shine, and akin to E. fancy. Cf. {Facetious}.] 1. The exterior form or appearance… …
