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(c) i) Calculate the tube-side convective heat transfer coefficient (h) if the heat exchanger has 508 tubes of 20 mm outside diameter and thickness of 2mm; justify the selection of the proper equation, ii) give proper expressions for the Reynolds (Re) and Nusselt (Nu) numbers and explain their roles in the procedure of calculating convective heat transfer coefficients. (d) i) Calculate the total length of the heat exchanger tubes, if the overall heat transfer coefficient is 1070 W m²K-1, ii) explain the general concept of the overall heat transfer coefficient.

(c) i) Calculate the tube-side convective heat transfer coefficient (h) if the heat exchanger has 508 tubes of 20 mm outside diameter and thickness of 2mm; justify the selection of the proper equation, ii) give proper expressions for the Reynolds (Re) and Nusselt (Nu) numbers and explain their roles in the procedure of calculating convective heat transfer coefficients. (d) i) Calculate the total length of the heat exchanger tubes, if the overall heat transfer coefficient is 1070 W m²K-1, ii) explain the general concept of the overall heat transfer coefficient.

Elements Of Electromagnetics
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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A shell-and-tube heat exchanger is used to cool compressed liquid methanol from 176 °F to 104 °F. The methanol flows on the shell side of the exchanger. The coolant is water that rises in temperature from 50 °F to 86 °F and flows within the tubes at a rate of 68.9 kg s-1. Finding the appropriate thermophysical data and applying the proper equations, you are required to do the following:
Transcribed Image Text:A shell-and-tube heat exchanger is used to cool compressed liquid methanol from 176 °F to 104 °F. The methanol flows on the shell side of the exchanger. The coolant is water that rises in temperature from 50 °F to 86 °F and flows within the tubes at a rate of 68.9 kg s-1. Finding the appropriate thermophysical data and applying the proper equations, you are required to do the following:
(c) i) Calculate the tube-side convective heat transfer coefficient (h) if the heat exchanger has 508 tubes of 20 mm outside diameter and thickness of 2mm; justify the selection of the proper equation, ii) give proper expressions for the Reynolds (Re) and Nusselt (Nu) numbers and explain their roles in the procedure of calculating convective heat transfer coefficients. (d) i) Calculate the total length of the heat exchanger tubes, if the overall heat transfer coefficient is 1070 W m²²K1, ii) explain the general concept of the overall heat transfer coefficient.
Transcribed Image Text:(c) i) Calculate the tube-side convective heat transfer coefficient (h) if the heat exchanger has 508 tubes of 20 mm outside diameter and thickness of 2mm; justify the selection of the proper equation, ii) give proper expressions for the Reynolds (Re) and Nusselt (Nu) numbers and explain their roles in the procedure of calculating convective heat transfer coefficients. (d) i) Calculate the total length of the heat exchanger tubes, if the overall heat transfer coefficient is 1070 W m²²K1, ii) explain the general concept of the overall heat transfer coefficient.
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