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ground heat

См. также в других словарях:

  • Heat recovery ventilation — (also known as a heat exchanger, air exchanger or air to air exchanger) is a ventilation system that employs a counter flow heat exchanger between the inbound and outbound air flow. HRV provide fresh air and improved climate control, while also… …   Wikipedia

  • Ground granulated blast furnace slag — (GGBS or GGBFS) is obtained by quenching molten iron slag (a by product of iron and steel making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.ApplicationsGGBS is… …   Wikipedia

  • Ground glass joint — Ground glass joints are used in laboratories to quickly and easily fit leak tight apparatus together from commonly available parts. For example, a round bottom flask, Liebig condenser, and oil bubbler with ground glass joints may be rapidly… …   Wikipedia

  • Heat lightning — is a misnomer for the faint flashes of lightning on the horizon or other clouds from distant thunderstorms that do not have accompanying sounds of thunder. Heat lightning was named because it often occurs on hot summer nights, and to distinguish… …   Wikipedia

  • Ground-penetrating radar — (GPR) is a geophysical method that uses radar pulses to image the subsurface. This non destructive method uses electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum, and detects the reflected signals from… …   Wikipedia

  • heat pump — heat′ pump n. ene thr a device that uses a compressible refrigerant to transfer heat in a reversible process from one body, as the ground, air, or water, to another body, as a building • Etymology: 1890–95 …   From formal English to slang

  • Heat pump — A heat pump is a machine or device that moves heat from one location (the source ) to another location (the sink or heat sink ), using work. Most heat pump technology moves heat from a low temperature heat source to a higher temperature heat sink …   Wikipedia

  • Heat pump —   1) (air source)   An air source heat pump is the most common type of heat pump. The heat pump absorbs heat from the outside air and transfers the heat to the space to be heated in the heating mode. In the cooling mode the heat pump absorbs heat …   Energy terms

  • Ground-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 …   Wikipedia

  • Heat pump efficiency —   The efficiency of a heat pump, that is, the electrical energy to operate it, is directly related to temperatures between which it operates. Geothermal heat pumps are more efficient than conventional heat pumps or air conditioners that use the… …   Energy terms

  • Heat wave — A heat wave is a prolonged period of excessively hot weather, which may be accompanied by high humidity. There is no universal definition of a heat wave;cite journal |last=Meehl |first=George A. |coauthors=Tebaldi, Claudia |title=More Intense,… …   Wikipedia

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