Pressurized water is often available at elevated temperatures and may be u space heating or industrial process applications. In such cases, it is customar a tube bank in which the water is passed through the tubes, while air is pa cross flow over the tubes. Consider a staggered arrangement for which t outside diameter is 16.4 mm and the longitudinal and transverse pitches are 3 31.3 mm. There are seven rows of tubes in the airflow direction and eight tu row. Under typical operating conditions, the cylinder surface temperature is while the air upstream temperature and velocity are 150C and 6 m/s, respe Determine the rate of heat transfer per unit length of tubes.
Pressurized water is often available at elevated temperatures and may be u space heating or industrial process applications. In such cases, it is customar a tube bank in which the water is passed through the tubes, while air is pa cross flow over the tubes. Consider a staggered arrangement for which t outside diameter is 16.4 mm and the longitudinal and transverse pitches are 3 31.3 mm. There are seven rows of tubes in the airflow direction and eight tu row. Under typical operating conditions, the cylinder surface temperature is while the air upstream temperature and velocity are 150C and 6 m/s, respe Determine the rate of heat transfer per unit length of tubes.
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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Transcribed Image Text:Heat transfer
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Pressurized water is often available at elevated temperatures and may be used for
space heating or industrial process applications. In such cases, it is customary to use
a tube bank in which the water is passed through the tubes, while air is passed in
cross flow over the tubes. Consider a staggered arrangement for which the tube
outside diameter is 16.4 mm and the longitudinal and transverse pitches are 34.3 and
31.3 mm. There are seven rows of tubes in the airflow direction and eight tubes per
row. Under typical operating conditions, the cylinder surface temperature is 70 oC,
while the air upstream temperature and velocity are 150C and 6 m/s, respectively.
Determine the rate of heat transfer per unit length of tubes.
Air properties at assumed mean temperature are:
p= 1.217 kg /m3 k = 0.0205 W/m2 .k Pr 0.710 Prs@ Ts 0.705 u =0.18036 x
10-4 N.s/m2 Cp 1.006 kJ/kg K pi@inlet temp 1.225 kg/m3
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