{"id":2990,"date":"2022-11-21T16:00:54","date_gmt":"2022-11-21T10:30:54","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=2990"},"modified":"2022-11-22T16:53:12","modified_gmt":"2022-11-22T11:23:12","slug":"heat-transfer-convection","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/heat-transfer-convection\/","title":{"rendered":"Heat Transfer by Convection"},"content":{"rendered":"

Heat<\/a> Transfer by Convection<\/h2>\n

This mode of heat transfer is seen in liquids and gases in which the molecules are less densely packed and are free to move. Thus, convection is the primary mode of heat transfer in fluids.<\/p>\n

Let us see the following example and learn how heat is transferred by convection.
\nThe bottom of a vessel containing water is heated. After sometime, the water at the top of the vessel also becomes hot. How does this happen?
\n\"Convection-of-Heat\"<\/p>\n

Fig.<\/strong> Hot water (red) rises up and cold water (blue) falls to the bottom.<\/p>\n

If a vessel containing water is kept on a flame, the water at the bottom of the vessel gets hot, and as hot water is lighter than cold water, it rises up carrying the heat energy with it (Fig.). The colder and denser water on the top falls to the bottom of the vessel and gets heated in its turn. This process continues and results in a circulating stream of hot and cold water. As a result, the whole water in the vessel gets heated.
\nThis method by which heat is transferred by mass movement of the liquid or gas itself is called convection.<\/p>\n

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