A thin electrical heater dissipating 4000 W/m² is sand- wiched between two 25-mm-thick plates whose exposed surfaces experience convection with a fluid for 400 W/m² K. The thermo- which T = 20°C and h = physical properties of the plate material are p = 2500 kg/m³, c = 700 J/kg K, and k = 5 W/m . K. Electric heater, q Fluid Too, h (a) On T -L ● - . +L - p, c, k X Fluid Too, h x coordinates, sketch the steady-state tem- perature distribution for -L≤ x≤ +L. Calculate values of the temperatures at the surfaces, x = ±L, and the midpoint, x = 0. Label this distribution as Case 1, and explain its salient features.
A thin electrical heater dissipating 4000 W/m² is sand- wiched between two 25-mm-thick plates whose exposed surfaces experience convection with a fluid for 400 W/m² K. The thermo- which T = 20°C and h = physical properties of the plate material are p = 2500 kg/m³, c = 700 J/kg K, and k = 5 W/m . K. Electric heater, q Fluid Too, h (a) On T -L ● - . +L - p, c, k X Fluid Too, h x coordinates, sketch the steady-state tem- perature distribution for -L≤ x≤ +L. Calculate values of the temperatures at the surfaces, x = ±L, and the midpoint, x = 0. Label this distribution as Case 1, and explain its salient features.
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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whose
A thin electrical heater dissipating 4000 W/m² is sand-
wiched between two 25-mm-thick plates
exposed surfaces experience convection with a fluid for
20°C and h = 400 W/m² · K. The thermo-
which T..
physical properties of the plate material are p = 2500
700 J/kg K, and k = 5 W/mK.
.
Electric heater, q
kg/m³, c
Fluid
Too, h
=
=
-L
0
+L
- p, c, k
Fluid
To'
h
111
(a) On T-x coordinates, sketch the steady-state tem-
perature distribution for -L≤x≤ +L. Calculate
values of the temperatures at the surfaces, x = ±L,
and the midpoint, x = 0. Label this distribution as
Case 1, and explain its salient features.
(h) a
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