fan efficiency
51HVAC — may also stand for High voltage alternating current. See also: Glossary of HVAC HVAC systems use ventilation air ducts installed throughout a building that supply conditioned air to a room through rectangular or round outlet vents, called… …
52General Electric CF6 — The General Electric TF39 and CF6 are a family of high bypass turbofan engines. Originally developed as the TF39 to power the C 5 Galaxy, they were the first high power high bypass jet engines available, and went on to power a wide variety of… …
53Fuel economy in automobiles — Fuel consumption monitor from a 2006 Honda Airwave …
54File area network — File Area Networking refers to various methods of sharing files over a network such as storage devices connected to a file server or network attached storage (NAS). Background Data storage technology over the years has evolved from a direct… …
55Oil heater — A typical oil heater An oil heater, also often known as a column heater, is a common form of convection heater used in domestic heating. Although filled with oil, it is electrically heated and does not involve burning any oil fuel, such as… …
56Model aircraft — A die cast Boeing 747 400 model. Model aircraft are flying or non flying models of existing or imaginary aircraft using a variety of materials including plastic, diecast metal, polystyrene, balsa wood, foam and fibreglass. Flying designs range… …
57Aircraft engine — An aircraft engine is a propulsion system for an aircraft. Aircraft engines are almost always a type of lightweight internal combustion engine. This article is an overview of the basic types of aircraft engines and the design concepts employed in …
58Electric heating — is any process in which electrical energy is converted to heat. Common applications include heating of buildings, cooking, and industrial processes. An electric heater is an electrical appliance that converts electrical energy into heat. The… …
59Radiator (engine cooling) — For other uses, see Radiator (disambiguation). A typical engine coolant radiator used in an automobile Radiators are used for cooling internal combustion engines, mainly in automobiles but also in piston engined aircraft, railway locomotives,… …
60Solar power satellite — A solar power satellite, or SPS or Powersat, as originally proposed would be a satellite built in high Earth orbit that uses microwave power transmission to beam solar power to a very large antenna on Earth. Advantages of placing the solar… …
