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The temperature inside and outside of the room is 255.4 K and 297.1 K. Calculate the heat loss and temperature at the interface between inner layer and middle layer.

The temperature inside and outside of the room is 255.4 K and 297.1 K. Calculate the heat loss and temperature at the interface between inner layer and middle layer.

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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A room is constructed using 3 different layers of different materials. The materials with their thermal conductivities are given in the table below: Conductivity, m -K W Thickness, mm Inner layer 0.151 12.7 Middle layer 0.0433 101.6 Outer layer 0.762 76.2 The temperature inside and outside of the room is 255.4 K and 297.1 K. Calculate the heat loss and temperature at the interface between inner layer and middle layer. a) Q =-14.7 W and T; = 256.8 K b) Q =-43.8 W and T; = 255.4 K c) Q =-16.5 W and T; = 256.8 K d) Q =-17.3 W and T = 233.4 K
Transcribed Image Text:A room is constructed using 3 different layers of different materials. The materials with their thermal conductivities are given in the table below: Conductivity, m -K W Thickness, mm Inner layer 0.151 12.7 Middle layer 0.0433 101.6 Outer layer 0.762 76.2 The temperature inside and outside of the room is 255.4 K and 297.1 K. Calculate the heat loss and temperature at the interface between inner layer and middle layer. a) Q =-14.7 W and T; = 256.8 K b) Q =-43.8 W and T; = 255.4 K c) Q =-16.5 W and T; = 256.8 K d) Q =-17.3 W and T = 233.4 K
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