How to Perform Transient Heat Transfer
Transient heat transfer simply involves the process of an object and its environment reaching the same temperature. If you have a bowl of hot soup and you put an ice cube in it to cool it down, heat will transfer from the soup to the ice; the ice will change from a solid to a liquid state, and the resulting water will be at a much higher temperature; the soup, on the other hand, will now have a lower temperature. This is an example of transient heat transfer occurring through convection; radiation and conduction are the other two methods.
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Instructions
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Conduction: Transient Heat Transfer between Solids
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Plug in your curling iron and turn it on.
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Place the curling iron in your hair when it has reached your desired temperature.
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Curl your hair with the iron. When you are done, reach up and touch your hair. Your hair will feel warm because of the heat that has transferred from the iron.
Convection: Transient Heat Transfer through Gas or Liquid
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Take a small sauce pan and add two cups of water. Turn on your stove's burner to "High" and place the pan on the burner.
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Wait for the water to boil and add a cup of macaroni. Let the water boil again and then turn the heat down and let the macaroni simmer for eight minutes.
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Pour the contents of the pan into a colander and hold your hand above the macaroni. The heat from the water has transferred to the pasta.
Radiation: Transient Heat Transfer through the Air
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Go outside and sit on a lawn chair on a warm, sunny day.
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Wait in the chair until you feel noticeably warmer. In the summer months this will happen more quickly.
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Go back inside the house. The cooler air inside should now feel almost cold because heat has transferred from the sun's rays to your body.
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References
- Photo Credit sun image by Bube from Fotolia.com
