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Q1/ A 5 m -wide, 4 m high, and 40 m long kiln used to cureconcrete pipes is made of 20 cm thick concrete walls and ceiling(k = 0.9 W/m · °C). The kiln is maintained at 40°C by injecting hot steam into it. The two ends of the kiln, 4 m * 5 m in size, are made of a 3 mm thick sheet metal covered with2 cm- thick Styrofoam (k = 0.033 W/m - °C). The convection heat transfer coefficients on the inner and the outer surfaces of the kiln are 3000 W/m2 · °C and 25 W/m2· °C, respectively. Disregarding any heat loss through the floor, determine the rate of heat loss from the kiln when the ambient air is at * .-4°C

Q1/ A 5 m -wide, 4 m high, and 40 m long kiln used to cureconcrete pipes is made of 20 cm thick concrete walls and ceiling(k = 0.9 W/m · °C). The kiln is maintained at 40°C by injecting hot steam into it. The two ends of the kiln, 4 m * 5 m in size, are made of a 3 mm thick sheet metal covered with2 cm- thick Styrofoam (k = 0.033 W/m - °C). The convection heat transfer coefficients on the inner and the outer surfaces of the kiln are 3000 W/m2 · °C and 25 W/m2· °C, respectively. Disregarding any heat loss through the floor, determine the rate of heat loss from the kiln when the ambient air is at * .-4°C

Introduction to Chemical Engineering Thermodynamics
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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Q1/ A 5 m -wide, 4 m high, and 40 m long kiln used to cureconcrete pipes is made of 20 cm thick concrete walls and ceiling(k = 0.9 W/m · °C). The kiln is %3D maintained at 40°C by injecting hot steam into it. The two ends of the kiln, 4 m * 5 m in size, are made of a 3 mm thick sheet metal covered with2 cm- thick Styrofoam (k = 0.033 W/m °C). The convection heat transfer coefficients on the inner and the outer surfaces of the kiln are 3000 W/m2 · °C and 25 W/m2 · °C, respectively. Disregarding any heat loss through the floor, determine the rate of heat loss from the kiln when the ambient air is at * .-4°C
Transcribed Image Text:Q1/ A 5 m -wide, 4 m high, and 40 m long kiln used to cureconcrete pipes is made of 20 cm thick concrete walls and ceiling(k = 0.9 W/m · °C). The kiln is %3D maintained at 40°C by injecting hot steam into it. The two ends of the kiln, 4 m * 5 m in size, are made of a 3 mm thick sheet metal covered with2 cm- thick Styrofoam (k = 0.033 W/m °C). The convection heat transfer coefficients on the inner and the outer surfaces of the kiln are 3000 W/m2 · °C and 25 W/m2 · °C, respectively. Disregarding any heat loss through the floor, determine the rate of heat loss from the kiln when the ambient air is at * .-4°C
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