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What is convection and what are some applications of convection yahoo! uk & ireland answers


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What is convection and what are some applications of convection yahoo! uk & ireland answers

  1. 1. 5/7/13 What is convection and what are some applications of convection? - Yahoo! UK & Ireland 1/2Home > All Categories > Science & Mathematics > Physics > Resolved QuestionSearch Yahoo! for practical application of convectionSearching for "practical application of convection"?1. Free Online Classifieds Quik Your Product or Service. 100% Free! No Sign up Required.Sponsored ResultsOther Answers (4)What is convection and what are some applications of convection?5 years ago ( 2008-06-05 22:04:33 +0000 ) Report AbuseOpjBest Answer - Chosen by AskerConvection is one method of transferring heat energy via a fluid medium (one that is free to move like a liquid of gas)eg. radiator in a room.At hot radiator, air is heated and thus expands (since molecules gain energy and thrash about more, taking morespace).The density of warm air decreases, so it rises to the ceiling. (If you jump up and down in a steamy kitchen you canactually tell)The space occupied before by the warm air is replaced by cold air. thus the warm air is displaced and moves acrossthe room.The warm air loses energy, becomes more dense and sinks.The air that replaced the warm air before has now warmed up and risen, so the convection current begins again asthe original batch of air goes back to the radiator to be heated up.5 years ago ( 2008-06-05 22:16:45 +0000 ) Report AbuseAskers Rating:thanks. right on!!!!!!!!UTATSConvection is where heat is transferred by a moving fluid.For example, if it is a hot day and you turn on the fan, the moving air cools you down. Convection is a more efficientmethod of transfering heat. It is because you are continuously replacing the molecule in the fluid next to the surfaceNew User? Register Sign In Help Make Y! My Homepage Mail My Y! Yahoo!Search Search Web
  2. 2. 5/7/13 What is convection and what are some applications of convection? - Yahoo! UK & Ireland 2/2you wish to cool.As the previous Answerer noted, a convection oven work by using a fan to move the air around. Radiators establishtheir own convection flow. Hot air rises and is replaced by colder air which in turn heats up.5 years ago ( 2008-06-05 22:16:25 +0000 ) Report AbuseFrst Grade Rocks! Ωsnoopy_rules has described natural convection well. If you use a fan or pump its "forced convection".Every time you boil a kettle, youre using natural convection: water is such a poor conductor that only water next theheat source would boil, if convection didnt spread the heat through the kettle.Old-fashioned house hot-water systems used natural convection to get the heat from the boiler to the hot-water tank,but they therefore required large pipes; modern ones use a pump to force water through smaller pipes - convenientbut more complex.5 years ago ( 2008-06-05 22:51:15 +0000 ) Report AbuseJames PRadiators have a degree of convection.Look on the back of your radiator at home, the fins on the back aid convection (the heat that convects, rises up andalong the ceiling and back down the far wall)An oven, uses convection, where as the grill is a radiant heat.Convected heat is the hot air moving because its lighter than the cooler air.There is no convected heat in space - there is no air.5 years ago ( 2008-06-05 22:09:25 +0000 ) Report AbuseAckaConvection is the transfer of heat by the actual movement of the warmed matter, A convection oven circulates hot airto bake cakes5 years ago ( 2008-06-05 22:13:45 +0000 ) Report AbuseBobbys_l...