The inside surface of an insulation layer is maintained at 350oC and the outside surface dissipates heat by convection and radiation to air and wall, respectively. The temperatures of air and wall are 15 oC. The insulation layer has a thickness of 10 cm and a thermal conductivity of 15 W/m.K. What is the value of the heat transfer coefficient at the outside surface of the layer, if the temperature at the outside surface should not exceed 225 oC? (The emissivity and the width of the surface are 0.3 and 1 m., respectively. =5.67x10-8 W/m2K 4 ).
The inside surface of an insulation layer is maintained at 350oC and the outside surface dissipates heat by convection and radiation to air and wall, respectively. The temperatures of air and wall are 15 oC. The insulation layer has a thickness of 10 cm and a thermal conductivity of 15 W/m.K. What is the value of the heat transfer coefficient at the outside surface of the layer, if the temperature at the outside surface should not exceed 225 oC? (The emissivity and the width of the surface are 0.3 and 1 m., respectively. =5.67x10-8 W/m2K 4 ).
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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) The inside surface of an insulation layer is maintained at 350oC and the outside surface dissipates
heat by convection and radiation to air and wall, respectively. The temperatures of air and wall are 15 oC.
The insulation layer has a thickness of 10 cm and a thermal conductivity of 15 W/m.K. What is the value of
the heat transfer coefficient at the outside surface of the layer, if the temperature at the outside surface
should not exceed 225 oC? (The emissivity and the width of the surface are 0.3 and 1 m., respectively.
=5.67x10-8 W/m2K
4
).
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