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Problem 1. A copper slab of thickness 2mm is coated with lead of thickness 1mm on one side. Lead solidifies and immediately the temperatures of lead and copper become equal at 100°C. Calculate the temperature of lead coated copper after 1 min, if the heat transfer coefficient and the temperature of the air are 10 W/m².K and 20°C respectively. Physical Properties: kcu-401W/m.K; kpb=35W/m.K; Cpcu 385j/kg.K; pcu 8933kg/m³; ppb=11340kg/m³. Cppb=129j/kg.K;

Problem 1. A copper slab of thickness 2mm is coated with lead of thickness 1mm on one side. Lead solidifies and immediately the temperatures of lead and copper become equal at 100°C. Calculate the temperature of lead coated copper after 1 min, if the heat transfer coefficient and the temperature of the air are 10 W/m².K and 20°C respectively. Physical Properties: kcu-401W/m.K; kpb=35W/m.K; Cpcu 385j/kg.K; pcu 8933kg/m³; ppb=11340kg/m³. Cppb=129j/kg.K;

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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Problem 1. A copper slab of thickness 2mm is coated with lead of thickness 1mm on one side. Lead solidifies and immediately the temperatures of lead and copper become equal at 100°C. Calculate the temperature of lead coated copper after 1 min, if the heat transfer coefficient and the temperature of the air are 10 W/m².K and 20°C respectively. Physical Properties: kcu-401W/m.K; kpb=35W/m.K; Cpcu 385j/kg.K; Cppb=129j/kg.K; pcu 8933kg/m³; ppb=11340kg/m³.
Transcribed Image Text:Problem 1. A copper slab of thickness 2mm is coated with lead of thickness 1mm on one side. Lead solidifies and immediately the temperatures of lead and copper become equal at 100°C. Calculate the temperature of lead coated copper after 1 min, if the heat transfer coefficient and the temperature of the air are 10 W/m².K and 20°C respectively. Physical Properties: kcu-401W/m.K; kpb=35W/m.K; Cpcu 385j/kg.K; Cppb=129j/kg.K; pcu 8933kg/m³; ppb=11340kg/m³.
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