Microsoft PowerPoint - INTRODUCTION TO HEATconvection

Microsoft PowerPoint - INTRODUCTION TO HEATconvection -...

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INTRODUCTION TO HEAT convection Course By : Prof. Mohajer prepared by: S.M. rafigh 2011
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Warm-up In Chinese herbal tea shops, bowls of herbal tea are usually covered by glass plates. Why do the shop owners need to do this?
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Warm-up Some freezers at supermarkets do not have doors. This is just opposite to what herbal tea shops do. What could be the reason?
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Have you noticed. .. Introduction Air-conditioner is usually installed high on the wall immersion heater is fixed near the bottom
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These have to do with the transfer of heat Introduction by convection.
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Convection in water (video) Put a purple crystal into a beaker of water near the side. note its movement
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Convection in air (video) Light the candle & hold a piece of smoking paper on the other side of e cardboard. the cardboard. note smoke's movement
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Convection current When the water is heated at the bottom, is replaced by cold water from above.
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The flow of water is called convection current . This method of heat transfer
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This note was uploaded on 06/21/2011 for the course CHE 21345 taught by Professor Prof.mohajer during the Fall '10 term at Sharif University of Technology.

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Microsoft PowerPoint - INTRODUCTION TO HEATconvection -...

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