Obtain by dimensional analysis a functional relationship for the wall heat transfer coefficient h (W/m2-K) for a fluid flowing through a straight pipe of circular cross section. Assume that the effects of natural convection may be neglected in comparison with those of forced convection. Taking the heat transfer coefficient, h, as a function of the fluid velocity, density, viscosity specific heat and thermal conductivity, v, p, H, Cp and k, respectively, and of the inside diameter of the pipe, d. For recurring set, the variables d, u, k, and p. It found by experiment that, when the flow is turbulent, increasing the flowrate by a factor of 2 always results in a 60 percent increase in the coefficient. How would a 50 percent increase in density of the fluid be expected to affect coefficient, all other variables remaining constant?
Obtain by dimensional analysis a functional relationship for the wall heat transfer coefficient h (W/m2-K) for a fluid flowing through a straight pipe of circular cross section. Assume that the effects of natural convection may be neglected in comparison with those of forced convection. Taking the heat transfer coefficient, h, as a function of the fluid velocity, density, viscosity specific heat and thermal conductivity, v, p, H, Cp and k, respectively, and of the inside diameter of the pipe, d. For recurring set, the variables d, u, k, and p. It found by experiment that, when the flow is turbulent, increasing the flowrate by a factor of 2 always results in a 60 percent increase in the coefficient. How would a 50 percent increase in density of the fluid be expected to affect coefficient, all other variables remaining constant?
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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![Obtain by dimensional analysis a functional relationship for the
wall heat transfer coefficient h (W/m2-K) for a fluid flowing
through a straight pipe of circular cross section. Assume that the
effects of natural convection may be neglected in comparison with
those of forced convection. Taking the heat transfer coefficient, h,
as a function of the fluid velocity, density, viscosity specific heat
and thermal conductivity, v, p, µ, Cp and k, respectively, and of the
inside diameter of the pipe, d. For recurring set, the variables d, µ,
H,
k, and p. It found by experiment that, when the flow is turbulent,
increasing the flowrate by a factor of 2 always results in a 60
percent increase in the coefficient. How would a 50 percent
increase in density of the fluid be expected to affect coefficient, all
other variables remaining constant?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F259149b5-183b-4fc7-ba2a-6aaaaa3c7c8c%2F8b844725-d49f-4f49-93f2-87dced95dd52%2Fqh5igw4_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Obtain by dimensional analysis a functional relationship for the
wall heat transfer coefficient h (W/m2-K) for a fluid flowing
through a straight pipe of circular cross section. Assume that the
effects of natural convection may be neglected in comparison with
those of forced convection. Taking the heat transfer coefficient, h,
as a function of the fluid velocity, density, viscosity specific heat
and thermal conductivity, v, p, µ, Cp and k, respectively, and of the
inside diameter of the pipe, d. For recurring set, the variables d, µ,
H,
k, and p. It found by experiment that, when the flow is turbulent,
increasing the flowrate by a factor of 2 always results in a 60
percent increase in the coefficient. How would a 50 percent
increase in density of the fluid be expected to affect coefficient, all
other variables remaining constant?
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