A shell-and-tube heat exchanger is to be constructed for the purpose of heating air in the tubes from 60°F to 160°F. This will be accomplished by the condensation of steam at 220°F (see Fig. 1). The air flows at the rate of 50,000 lbm/hr, with a mass velocity of 7000 lbm/hr-ft². tubes are steel, with a 2 in. inside diameter, calculate (a) the required number of tubes, (b) the effective heat transfer area, and (c) the length of each pipe. Also, find (d) the pressure drop in the tube, assuming that the air enters at atmospheric pressure. If the = 220° F hin steam T Cout = 160°F T Cin = 60°F air "hout 220°F
A shell-and-tube heat exchanger is to be constructed for the purpose of heating air in the tubes from 60°F to 160°F. This will be accomplished by the condensation of steam at 220°F (see Fig. 1). The air flows at the rate of 50,000 lbm/hr, with a mass velocity of 7000 lbm/hr-ft². tubes are steel, with a 2 in. inside diameter, calculate (a) the required number of tubes, (b) the effective heat transfer area, and (c) the length of each pipe. Also, find (d) the pressure drop in the tube, assuming that the air enters at atmospheric pressure. If the = 220° F hin steam T Cout = 160°F T Cin = 60°F air "hout 220°F
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:A shell-and-tube heat exchanger is to be constructed for
the purpose of heating air in the tubes from 60°F to 160°F.
This will be accomplished by the condensation of steam at
220°F (see Fig. 1).
lbm/hr, with a mass velocity of 7000 lbm/hr-ft².
tubes are steel, with a 2 in. inside diameter, calculate
(a) the required number of tubes, (b) the effective heat
transfer area, and (c) the length of each pipe.
(d) the pressure drop in the tube, assuming that the air
enters at atmospheric pressure.
The air flows at the rate of 50,000
If the
Also, find
steam
T.
= 220°F
= 160 F
T
Cout
= 60°F
T
Cin
air
T.
hout
= 220°F
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