A heat exchanger as shown in Flgure 1 is used for an air conditioning system that is working through chilled water. Hot air at 1 bar and 42 °C enters the heat exchanger at a volume flowrate of 1 m°/s leaving at 21 °C. The chilled water enters the heat exchanger at 4°C and 1.5 bar and leaves as warm water at 12 °C and same pressure. The heat transfer from the outer surface of the heat exchanger is neglected. Similarly, the kinetic and potential energy difference in both the air and water at the inlet and exit is negligible. Assume constant specific heat for both the water and air. At steady-state operation, determine: (a) The mass flow rate of the water, and (b) The rate of heat transfer between the water and the air in kW. Hot Air P3=1 bar Chilled Water P,=1.5 bar T, Conditioned Air P=1 bar T warm Water P2=1.5 bar T2 Figure 1 steady-state operation heat exchanger

A heat exchanger as shown in Flgure 1 is used for an air conditioning system that is working through chilled water. Hot air at 1 bar and 42 °C enters the heat exchanger at a volume flowrate of 1 m°/s leaving at 21 °C. The chilled water enters the heat exchanger at 4°C and 1.5 bar and leaves as warm water at 12 °C and same pressure. The heat transfer from the outer surface of the heat exchanger is neglected. Similarly, the kinetic and potential energy difference in both the air and water at the inlet and exit is negligible. Assume constant specific heat for both the water and air. At steady-state operation, determine: (a) The mass flow rate of the water, and (b) The rate of heat transfer between the water and the air in kW. Hot Air P3=1 bar Chilled Water P,=1.5 bar T, Conditioned Air P=1 bar T warm Water P2=1.5 bar T2 Figure 1 steady-state operation heat exchanger

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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