heat value
61reaction, heat of — Amount of heat that must be added or removed during a chemical reaction to keep all substances involved at the same temperature. If it is positive (heat must be added), the reaction is endothermic; if it is negative (heat is given off), the… …
62Heating 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… …
63Energy value of coal — The energy value of coal, or the fuel content, is the amount of potential energy in coal that can be converted into actual heating ability. The value can be calculated and compared with different grades of coal or even other materials. Materials… …
64Miami Heat — 2011–12 Miami Heat season Conference …
65mechanical equivalent of heat — 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 * * * (in any system of physical units) the number of… …
66Labor theory of value — The labor theories of value (LTV) are theories in economics according to which the values of commodities are related to the labor needed to produce them.There are many different accounts of labor value, with the common element that the value of… …
67Criticisms of the labour theory of value — often arise from an economic criticism of Marxism. Contents 1 Microeconomic theory 2 Supply and demand 3 Jevons 4 Menger s critique …
68Coefficient of Heat Transmission — (U Value) A value that describes the ability of a material to conduct heat. The number of Btu that flow through 1 square foot of material, in one hour. It is the reciprocal of the R Value (U Value = 1/R Value) …
69net calorific value — (net heat of combustion at constant pressure), n the heat produced by combustion of unit quantity of a solid or liquid fuel when burned, at a constant pressure of 1 atm (0.1 MPa), under conditions such that all the water in the products remains… …
70Biological value — (BV) is a measure of the proportion of absorbed protein from a food which becomes incorporated into the proteins of the organism s body. It summarises how readily the broken down protein can be used in protein synthesis in the cells of the… …
