5000 kg of dry air per hour is cooled from 60 oC to 34 oC in a countercurrent heat exchanger. In the cooling process, the cold air supplied to the heat exchanger is used at a speed of 6200 kg/h and at 20 oC. If the same amount of hot air was cooled from 60 oC to 24 oC in a longer heat exchanger with the help of cold air under the same conditions, determine what the ratio of the new heat exchanger length to the original heat exchanger length would be (assume the specific heat of the air is constant).
5000 kg of dry air per hour is cooled from 60 oC to 34 oC in a countercurrent heat exchanger. In the cooling process, the cold air supplied to the heat exchanger is used at a speed of 6200 kg/h and at 20 oC. If the same amount of hot air was cooled from 60 oC to 24 oC in a longer heat exchanger with the help of cold air under the same conditions, determine what the ratio of the new heat exchanger length to the original heat exchanger length would be (assume the specific heat of the air is constant).
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
Question
5000 kg of dry air per hour is cooled from 60 oC to 34 oC in a countercurrent heat exchanger. In the cooling process, the cold air supplied to the heat exchanger is used at a speed of 6200 kg/h and at 20 oC. If the same amount of hot air was cooled from 60 oC to 24 oC in a longer heat exchanger with the help of cold air under the same conditions, determine what the ratio of the new heat exchanger length to the original heat exchanger length would be (assume the specific heat of the air is constant).
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