4B. A fluid is streaming over a flat surface maintained at a different temperature. Measurements of the local velocity and temperature show that the hydrodynamic boundary layer is 10 times thicker than the thermal boundary layer. What kind of fluid could this be ? - (a) Water (b) Mercury (c)Air (d)Engine oil (Explain your choice of answer) 4C. The total heat transfer rate between a pipe and water flowing through the pipe can be expressed as: Q hA AT or alternatively, Q = mC₂AT = pvAC₂AT. Therefore,hA AT = pvAC₂AT → h = pvcp. Is this correct, and if not, what is wrong here? =
4B. A fluid is streaming over a flat surface maintained at a different temperature. Measurements of the local velocity and temperature show that the hydrodynamic boundary layer is 10 times thicker than the thermal boundary layer. What kind of fluid could this be ? - (a) Water (b) Mercury (c)Air (d)Engine oil (Explain your choice of answer) 4C. The total heat transfer rate between a pipe and water flowing through the pipe can be expressed as: Q hA AT or alternatively, Q = mC₂AT = pvAC₂AT. Therefore,hA AT = pvAC₂AT → h = pvcp. Is this correct, and if not, what is wrong here? =
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:4B. A fluid is streaming over a flat surface maintained at a different temperature. Measurements of the local
velocity and temperature show that the hydrodynamic boundary layer is 10 times thicker than the thermal
boundary layer. What kind of fluid could this be ? -
(a) Water (b) Mercury
(c) Air (d)Engine oil (Explain your choice of answer)
4C. The total heat transfer rate between a pipe and water flowing through the pipe can be expressed as:
→h=
hA AT or alternatively, Q = mC₂AT = pvAC₂AT. Therefore,hA AT pvAC₂AT → pvcp.
=
=
Is this correct, and if not, what is wrong here?
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