In 1916 Nusselt derived a theoretical relation for predicting the coefficient of heat transfer between a pure saturated vapor and a colder surface: h = 0.943 LHAT ) where h- mean heat transfer coefficient, Btu/(hr) (ft') (A°F) k - thermal conductivity, Btu/(hr) (ft)(A°F) p = density, Ib/ft' 8 = acceleration of gravity, 4.17 × 10* fv(hr)² A = enthalpy change, Btu/lb L = length of tube, ft H = viscosity, Ib„/(hr) (ft) AT = temperature difference, A°F %3D %3D %3D What are the units of the constant: 0.943?
In 1916 Nusselt derived a theoretical relation for predicting the coefficient of heat transfer between a pure saturated vapor and a colder surface: h = 0.943 LHAT ) where h- mean heat transfer coefficient, Btu/(hr) (ft') (A°F) k - thermal conductivity, Btu/(hr) (ft)(A°F) p = density, Ib/ft' 8 = acceleration of gravity, 4.17 × 10* fv(hr)² A = enthalpy change, Btu/lb L = length of tube, ft H = viscosity, Ib„/(hr) (ft) AT = temperature difference, A°F %3D %3D %3D What are the units of the constant: 0.943?
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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In 1916 Nusselt derived a theoretical relation for predicting the coefficient of heat
transfer between a pure saturated vapor and a colder surface:
h = 0.943(
LµAT ,
where h- mean heat transfer coefficient, Btu/(hr) (ft') (A°F)
k = thermal conductivity, Btw/(hr) (ft)(A°F)
p = density, Ib/ft
8 = acceleration of gravity, 4.17 × 10* f/(hr)²
A = enthalpy change, Btu/lb
L = length of tube, ft
H = viscosity, Ib„/(hr) (ft)
AT = temperature difference, A°F
What are the units of the constant: 0.943?
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