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lower heating value

См. также в других словарях:

  • Lower heating value — The lower heating value (also known as net calorific value , net CV , or LHV ) of a fuel is defined as the amount of heat released by combusting a specified quantity (initially at 25 °C or another reference state) and returning the temperature of …   Wikipedia

  • Net (Lower) Heating Value — (NHV)   The potential energy available in a fuel as received, taking into account the energy loss in evaporating and superheating the water in the fuel. Equal to the higher heating value minus 1050W where W is the weight of the water formed from… …   Energy terms

  • Higher heating value — The higher heating value (HHV;also known as the gross calorific value or gross energy) of a fuel is defined as the amount of heat released by a specified quantity (initially at 25 °C) once it is combusted and the products have returned to a… …   Wikipedia

  • Higher Heating Value — (HHV)   The maximum heating value of a fuel sample, which includes the calorific value of the fuel (bone dry) and the latent heat of vaporization of the water in the fuel. (See moisture content and net (lower) heating value, below.) …   Energy terms

  • Heating 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… …   Energy terms

  • Lower (Net) Heating Value —   The lower or net heat of combustion for a fuel that assumes that all products of combustion are in a gaseous state. (See Net Heating Value below.) …   Energy terms

  • Space heating — is the heating of a space, usually enclosed, such as a house or room. A space heater keeps the air and surroundings at a comfortable temperature for people or animals, or even plants in a greenhouse. Space heating generally warms a small space,… …   Wikipedia

  • net 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… …   Coke&Coal Terminology

  • Value added tax — Taxation An aspect of fiscal policy …   Wikipedia

  • Heating degree day — United States Heating Degree Day map, 1961 1990 …   Wikipedia

  • Underfloor heating — Heat can be provided by circulating heated water or by electric cable, mesh, or film heaters.Underfloor heating can be used with concrete and wooden floors, with all types of floor covering (e.g., stone, tile, wood, vinyl, and carpet), and at… …   Wikipedia

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