Problem: The insulating materials chrombrick, magnesite and refractory brick are arranged in series to constitute a furnace wall. The magnesite and refractory brick can't withstand temperature above 750°C and 300°C respectively. Find thickness of the wall, so that the heat loss cannot exceed 400 kcal/hr.m2,when inside and outside temperature of furnace walls are at 1250°C and 100°C respectively. Thermal conductivity of chrombrick = 0.99 kcal/hr. m°C Thermal conductivity of magnesite brick = 3.27 kcal/hr. m°C Thermal conductivity of refractory brick = 0.745 kcal/hr. mºC
Problem: The insulating materials chrombrick, magnesite and refractory brick are arranged in series to constitute a furnace wall. The magnesite and refractory brick can't withstand temperature above 750°C and 300°C respectively. Find thickness of the wall, so that the heat loss cannot exceed 400 kcal/hr.m2,when inside and outside temperature of furnace walls are at 1250°C and 100°C respectively. Thermal conductivity of chrombrick = 0.99 kcal/hr. m°C Thermal conductivity of magnesite brick = 3.27 kcal/hr. m°C Thermal conductivity of refractory brick = 0.745 kcal/hr. mºC
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:Problem: The insulating materials chrombrick, magnesite and refractory brick are arranged
in series to constitute a furnace wall. The magnesite and refractory brick can't withstand
temperature above 750°C and 300°C respectively. Find thickness of the wall, so that the heat
loss cannot exceed 400 kcal/hr.m²,when inside and outside temperature of furnace walls are
at 1250°C and 100°C respectively.
Thermal conductivity of chrombrick = 0.99 kcal/hr. mºC
Thermal conductivity of magnesite brick = 3.27 kcal/hr. m°C
Thermal conductivity of refractory brick = 0.745 kcal/hr. mºC
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