surface ventilating fan

См. также в других словарях:

• fan — fan1 [fan] n. [ME fanne < OE fann < L vannus, basket for winnowing grain < IE base * wē , to blow, flutter > WIND2, WINNOW] 1. Historical a device for winnowing grain 2. any device or machine used to set up a current of air for… …   English World dictionary

• fan — fan1 fanlike, adj. fanner, n. /fan/, n., v., fanned, fanning. n. 1. any device for producing a current of air by the movement of a broad surface or a number of such surfaces. 2. an implement of feathers, leaves, paper, cloth, etc., often in the… …   Universalium

• Parkfield Colliery — Parkfield Colliery, near Pucklechurch, South Gloucestershire, was sunk in 1851 under the ownership of Handel Cossham. Coal was reached in 1853. The shaft was 840ft deep, but only the upper series of coal veins were worked. These were the Hard,… …   Wikipedia

• building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

• Cooling tower — Natural draft wet cooling hyperboloid towers at Didcot Power Station, UK …   Wikipedia

• Air Movement and Control Association — The Air Movement and Control Association International, Inc. (AMCA; pronounced Am Cah ) is a nonprofit organization that creates standards for, tests, and rates Heating, Ventilating, and Air Conditioning (HVAC) equipment. It is best known for its …   Wikipedia

• coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …   Universalium

• HVAC — 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… …   Wikipedia

• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

• arts, East Asian — Introduction       music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature.       Some studies of East Asia… …   Universalium

• malacostracan — /mal euh kos treuh keuhn/, adj. 1. belonging or pertaining to the crustacean subclass Malacostraca, which includes the lobsters, shrimps, crabs, etc. n. 2. a malacostracan crustacean. [1825 35; < NL Malacostrac(a) order of crustacea ( < Gk, neut …   Universalium