Cold water enters a counter-flow heat exchanger at 35°C at a rate of 0.0233 kg/s, where it isheated by a hot water stream that enters the heat exchanger at 200°C at a rate of 0.0117kg/s. Assume the specific heat of cold water to remain constant at C, = 4.186 kJ/kg · °C andthe specific heat of hot water to remain constant at C, = 4.302 kJ/kg · °C. Consider theoverall heat transfer coefficient to be 180 W/m2.K. determine (a) the maximum heattransfer rate and (b) the actual outlet temperatures of the hot and cold water streamsusing the effectiveness-NTU method.Assumptions 1 Steady operating conditions exist. 2 The heat exchanger is well insulated sothat heat loss to the surroundings is negligible and thus heat transfer from the hot fluid isequal to the heat transfer to the cold fluid. 3 The thickness of the tube is negligible since itis thin-walled. 4 Changes in the kinetic 4 Changes in the kinetic and potential energies offluid streams are negligible. 5 The overall heat transfer coefficient is constant and uniform.Note. Write your answer step by step and clearly explain your work. You need to upload afile.

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Cold water enters a counter-flow heat exchanger at 35°C at a rate of 0.0233 kg/s, where it is heated by a hot water stream that enters the heat exchanger at 200°C at a rate of 0.0117 kg/s. Assume the specific heat of cold water to remain constant at C, = 4.186 kJ/kg · °C and the specific heat of hot water to remain constant at C, = 4.302 kJ/kg · °C. Consider the overall heat transfer coefficient to be 180 W/m².K. determine (a) the maximum heat transfer rate and (b) the actual outlet temperatures of the hot and cold water streams using the effectiveness-NTU method.

Cold water enters a counter-flow heat exchanger at 35°C at a rate of 0.0233 kg/s, where it is heated by a hot water stream that enters the heat exchanger at 200°C at a rate of 0.0117 kg/s. Assume the specific heat of cold water to remain constant at C, = 4.186 kJ/kg · °C and the specific heat of hot water to remain constant at C, = 4.302 kJ/kg · °C. Consider the overall heat transfer coefficient to be 180 W/m².K. determine (a) the maximum heat transfer rate and (b) the actual outlet temperatures of the hot and cold water streams using the effectiveness-NTU method.

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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