fan heating
71Chilled beam — A chilled beam is a type of convection HVAC system designed to heat or cool large buildings.[1] Pipes of water are passed through a beam (a heat exchanger) suspended a short distance from the ceiling of a room.[2] As the beam chills the air… …
72Theatrical smoke and fog — Theatrical smoke and fog, also known as special effect smoke, fog or haze, is a category of atmospheric effects used in the entertainment industry. The use of fog can be found throughout motion picture and television productions, live theatre,… …
73Calefaction — (Roget s Thesaurus) < N PARAG:Calefaction >N GRP: N 1 Sgm: N 1 increase of temperature increase of temperature Sgm: N 1 heating heating &c. >V. Sgm: N 1 calefaction calefaction tepefaction torrefaction Sgm: N 1 melting melting fusion …
74List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
75EcoCute — The EcoCute is an energy efficient heat pump that uses both electricity and heat extracted from the air to heat water for domestic use. Instead of the more conventional ammonia or haloalkane gases, EcoCute uses carbon dioxide as a refrigerant.… …
76Components of jet engines — Diagram of a typical gas turbine jet engine. Air is compressed by the fan blades as it enters the engine, and it is mixed and burned with fuel in the combustion section. The hot exhaust gases provide forward thrust and turn the turbines which… …
77Electricity on Shabbat in Jewish law — Jews who observe the Shabbat (Sabbath) have the practice of refraining from turning electricity on or off during Shabbat. In most cases they also abstain from making adjustments to the intensity of an electrical appliance as well. Authorities of… …
78Dell Inspiron — Logo Dell s Inspiron computer product line started as a range of laptop computers targeted at the entry level, budget, a Mobile Celeron or Mobile Pentium II processor with SDRAM, and had a high starting price of $2,799. Today, though, the… …
79Evaporative cooler — An evaporative cooler, photographed in Rocky Ford, Colorado, used in the drier parts of the American West to provide economical cooling …
80Thermosiphon — (alt. thermosyphon) refers to a method of passive heat exchange based on natural convection which circulates liquid in a vertical closed loop circuit without requiring a conventional pump. Its intended purpose is to simplify the pumping of liquid …
