unit heater
121ГОСТ Р МЭК 60079-30-1-2009: Взрывоопасные среды. Резистивный распределенный электронагреватель. Часть 30-1. Общие технические требования и методы испытаний — Терминология ГОСТ Р МЭК 60079 30 1 2009: Взрывоопасные среды. Резистивный распределенный электронагреватель. Часть 30 1. Общие технические требования и методы испытаний оригинал документа: 3.37 блок резистивного распределенного электронагревателя …
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122Kilowatt hour — KWH redirects here. For other uses, see KWH (disambiguation). Residential electricity meter located in Canada The kilowatt hour, or kilowatt hour, (symbol kW·h, kW h or kWh) is a unit of energy equal to 1000 watt hours or 3.6 megajoules …
123Hydrodesulfurization — (HDS) is a catalytic chemical process widely used to remove sulfur (S) from natural gas and from refined petroleum products such as gasoline or petrol, jet fuel, kerosene, diesel fuel, and fuel oils.[1][2] The purpose of removing the sulfur is to …
124Air conditioning — The term air conditioning refers to the cooling and dehumidification of indoor air for thermal comfort. In a broader sense, the term can refer to any form of cooling, heating, ventilation or disinfection that modifies the condition of air.… …
125petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …
126Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …
127Nuclear and radiation accidents — This article is about nuclear and radiation accidents in general. For a list of military nuclear accidents, see List of military nuclear accidents. For a list of civilian nuclear accidents, see List of civilian nuclear accidents. For a discussion …
128Supermarine Spitfire (early Merlin powered variants) — Infobox Aircraft name =Spitfire type =Fighter manufacturer =Supermarine caption =Spitfire Vc launching from USS Wasp designer =R. J. Mitchell first flight =5 March 1936 introduction =1938 retired =1955, RAF status = primary user =Royal Air Force… …