Air at 29oC with a rate of 0.03 kg/s enters a circular pipe that is constructed under the water. The water temperature is kept at 17oC and convection coefficient for water is hw= 1500 W/m2.K Pipe properties k=0.15 W/m.K Do=17cm Di=15cma) In order to reach an air outlet temperature of 21oC determine the reguired pipe length b) What is required fan power to move the air through the pipe? waterT=17°CDo =17cmhw=1500W/m?KD; =15cm.airTmo=21°CTmi-29°C0.03 kg/s%3D

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Air at 29^oC with a rate of 0.03 kg/s enters a circular pipe that is constructed under the water. The water temperature is kept at 17^oC and convection coefficient for water is h_w= 1500 W/m².K Pipe properties k=0.15 W/m.K D_o=17cm D_i=15cm

a) In order to reach an air outlet temperature of 21^oC determine the reguired pipe length
b) What is required fan power to move the air through the pipe?

water
T=17°C
Do =17cm
hw=1500W/m?K
D; =15cm.
air
Tmo=21°C
Tmi-29°C
0.03 kg/s
%3D

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