= Example 6-5 Six rows of tubes 15.24 m are set up as an in-line arrangement. Tubes are 0.0064 m in diameter and S, Sp = 0.0192 m. Tube wall temperature is 93.3°C. Atmospheric air is forced across at an inlet velocity of 4.57 m/sec. What is the total heat transfer per unit length of the tube bank? We first calculate Ty assuming that the air is at 21.1°C. Tf 93.3 + 21.1 2 = 57.2°C For this temperature and atmospheric pressure the air properties are: u = 0.0000197 kg/m sec, ky =0.0284 W/m °C, Pf = 1.0684 kg/m³ Cpf = 1.047 kJ/kg

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
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Example 6-5 Six rows of tubes 15.24 m are set up as an in-line arrangement.
Tubes are 0.0064 m in diameter and S, Sp = 0.0192 m. Tube wall temperature
is 93.3°C. Atmospheric air is forced across at an inlet velocity of 4.57 m/sec.
What is the total heat transfer per unit length of the tube bank?
We first calculate Ty assuming that the air is at 21.1°C.
Tf
93.3 + 21.1
2
= 57.2°C
For this temperature and atmospheric pressure the air properties are:
u = 0.0000197 kg/m sec,
ky =0.0284 W/m °C,
Pf = 1.0684 kg/m³
Cpf = 1.047 kJ/kg
Transcribed Image Text:= Example 6-5 Six rows of tubes 15.24 m are set up as an in-line arrangement. Tubes are 0.0064 m in diameter and S, Sp = 0.0192 m. Tube wall temperature is 93.3°C. Atmospheric air is forced across at an inlet velocity of 4.57 m/sec. What is the total heat transfer per unit length of the tube bank? We first calculate Ty assuming that the air is at 21.1°C. Tf 93.3 + 21.1 2 = 57.2°C For this temperature and atmospheric pressure the air properties are: u = 0.0000197 kg/m sec, ky =0.0284 W/m °C, Pf = 1.0684 kg/m³ Cpf = 1.047 kJ/kg
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