Q2/ Air at atmospheric pressure and 27 °C is blown across a long 4.0 cm diameter tube at a velocity of 20 m/ sec. What dimension (i.e. side) of a square duct would be needed to give the same heat transfer to the duct? Wall temperature is 50 °C in both cases. Nu=0.0266 Re0.805 Pr.1/3 Nu=0.102 Re0.675 Prl/3 u/p= 17.74 x 10-6 m²/sec k= 0.02711 W/m °C Pr=0.70 For tube For square duct Re, PVD u
Q2/ Air at atmospheric pressure and 27 °C is blown across a long 4.0 cm diameter tube at a velocity of 20 m/ sec. What dimension (i.e. side) of a square duct would be needed to give the same heat transfer to the duct? Wall temperature is 50 °C in both cases. Nu=0.0266 Re0.805 Pr.1/3 Nu=0.102 Re0.675 Prl/3 u/p= 17.74 x 10-6 m²/sec k= 0.02711 W/m °C Pr=0.70 For tube For square duct Re, PVD u
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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![Q2/ Air at atmospheric pressure and 27 °C is blown across a long 4.0 cm diameter tube at a
velocity of 20 m/ sec. What dimension (i.e. side) of a square duct would be needed to give
the same heat transfer to the duct? Wall temperature is 50 °C in both cases.
Nu=0.0266 Re0.805
Pr.1/3
Nu=0.102 Re0.675 Pr.1/3
μ/p= 17.74 x 10-6 m²/sec
k=0.02711 W/m °C
Pr= 0.70
For tube
For square duct
Re, PVD
м](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8f365584-af0d-48a6-aa46-9412f7a056c7%2F705fdfb7-125d-43b2-ab7f-22320845d00a%2F48n33kw_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q2/ Air at atmospheric pressure and 27 °C is blown across a long 4.0 cm diameter tube at a
velocity of 20 m/ sec. What dimension (i.e. side) of a square duct would be needed to give
the same heat transfer to the duct? Wall temperature is 50 °C in both cases.
Nu=0.0266 Re0.805
Pr.1/3
Nu=0.102 Re0.675 Pr.1/3
μ/p= 17.74 x 10-6 m²/sec
k=0.02711 W/m °C
Pr= 0.70
For tube
For square duct
Re, PVD
м
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