Water (heat capacity = 4.174 kJ/kg: ° C) at a rate of 10 kg/min is heated from 20 ° C to 60 oil that has a specific heat of 1.9 kJ/kg: ° C. The oil enters the shell side of the heat exchanger at 120 ° C and leaves at 70 ° C. The overall heat transfer coefficient is 350 W/m2 · ° C. (a) Use the log mean temperature difference method to calculate the heat exchanger area if a counter flow double pipe heat exchanger is used. (b) Use the effectiveness-NTU method to calculate the heat exchanger area if a counter flow double pipe t heat exchanger is used. (c) Use the log mean temperature difference method to calculate the heat exchanger area if a 2-4 shell and tube heat exchanger is used. by

Water (heat capacity = 4.174 kJ/kg: ° C) at a rate of 10 kg/min is heated from 20 ° C to 60 oil that has a specific heat of 1.9 kJ/kg: ° C. The oil enters the shell side of the heat exchanger at 120 ° C and leaves at 70 ° C. The overall heat transfer coefficient is 350 W/m2 · ° C. (a) Use the log mean temperature difference method to calculate the heat exchanger area if a counter flow double pipe heat exchanger is used. (b) Use the effectiveness-NTU method to calculate the heat exchanger area if a counter flow double pipe t heat exchanger is used. (c) Use the log mean temperature difference method to calculate the heat exchanger area if a 2-4 shell and tube heat exchanger is used. by

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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Concept explainers

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

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C by
Water (heat capacity = 4.174 kJ/kg: ° C) at a rate of 10 kg/min is heated from 20 ° C to 60 °
oil that has a specific heat of 1.9 kJ/kg: ° C. The oil enters the shell side of the heat exchanger at
120 ° C and leaves at 70 ° C. The overall heat transfer coefficient is 350 W/m2 · ° C.
(a) Use the log mean temperature difference method to calculate the heat exchanger area if a
counter flow double pipe heat exchanger is used.
(b) Use the effectiveness-NTU method to calculate the heat exchanger area if a counter flow
double pipe t heat exchanger is used.
(c) Use the log mean temperature difference method to calculate the heat exchanger area if a 2-4
shell and tube heat exchanger is used.
(d) Use the effectiveness-NTU method to calculate the heat exchanger area if a 2-4 shell and tube
heat exchanger is used.

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