convection air currents

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• Convection —   The transfer of heat by means of air currents.   ***   Transferring heat by moving air, or transferring heat by means of upward motion of particles of liquid or gas heat from beneath.   California Energy Comission. Dictionary of Energy Terms …   Energy terms

• Convection — This figure shows a calculation for thermal convection in the Earth s mantle. Colors closer to red are hot areas and colors closer to blue are cold areas. A hot, less dense lower boundary layer sends plumes of hot material upwards, and likewise,… …   Wikipedia

• convection — convectional, adj. /keuhn vek sheuhn/, n. 1. Physics. the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. 2. Meteorol. the vertical transport of atmospheric properties, esp. upward (distinguished from… …   Universalium

• Convection heater — A convection heater is a heater which operates by air convection currents circulating through the body of the appliance, and across its heating element. This heats up the air, causing it to increase in volume and so become buoyant and rise. Oil… …   Wikipedia

• convection — [[t]kənve̱kʃ(ə)n[/t]] N UNCOUNT Convection is the process by which heat travels through air, water, and other gases and liquids. [TECHNICAL] ...clouds which lift warm, moist air by convection high into the atmosphere. ...convection currents …   English dictionary

• convection — rising warm air and falling cool air. The transfer of energy by moving currents of fluid or gas containing energy …   Mechanics glossary

• Natural convection — Bénard cells. Natural convection is a mechanism, or type of heat transport, in which the fluid motion is not generated by any external source (like a pump, fan, suction device, etc.) but only by density differences in the fluid occurring due to… …   Wikipedia

• Granular convection — Brazil nuts ride on top of other assorted nuts Granular convection is a phenomenon where granular material subjected to shaking or vibration will exhibit circulation patterns similar to types of fluid convection.[1] It is sometimes described as… …   Wikipedia

• Passive solar building design — Elements of passive solar design, shown in a direct gain application …   Wikipedia

• Switch — For other uses, see Switch (disambiguation). Electrical switches. Top, left to right: circuit breaker, mercury switch, wafer switch, DIP switch, surface mount switch, reed switch. Bottom, left to right: wall switch (U.S. style), miniature toggle… …   Wikipedia

• climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …   Universalium