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150 kg of water is to be heated in a steam-jacketed vessel from 25°C to 80°C. Steam is condensing at 120°C, and the heat transfer area is 0.25 m². The heat transfer coefficients for condensation of steam and heating of water by convection are 1000 W/m2.°C and 500 W/m2.°C respectively. Write appropriate unsteady state balance equations and find the time required for heating the water. Assume that the specific heat of water in the temper- ature range of interest is 4.18 x 10 J/kg.°C.

150 kg of water is to be heated in a steam-jacketed vessel from 25°C to 80°C. Steam is condensing at 120°C, and the heat transfer area is 0.25 m². The heat transfer coefficients for condensation of steam and heating of water by convection are 1000 W/m2.°C and 500 W/m2.°C respectively. Write appropriate unsteady state balance equations and find the time required for heating the water. Assume that the specific heat of water in the temper- ature range of interest is 4.18 x 10 J/kg.°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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150 kg of water is to be heated in a steam-jacketed vessel from 25°C to 80° C. Steam is condensing at 120°C, and the heat transfer area is 0.25 m². The heat transfer coefficients for condensation of steam and heating of water by convection are 1000 W/m².ºC and 500 W/m2.°C respectively. Write appropriate unsteady state balance equations and find the time required for heating the water. Assume that the specific heat of water in the temper- ature range of interest is 4.18 × 10 J/kg.°C.
Transcribed Image Text:150 kg of water is to be heated in a steam-jacketed vessel from 25°C to 80° C. Steam is condensing at 120°C, and the heat transfer area is 0.25 m². The heat transfer coefficients for condensation of steam and heating of water by convection are 1000 W/m².ºC and 500 W/m2.°C respectively. Write appropriate unsteady state balance equations and find the time required for heating the water. Assume that the specific heat of water in the temper- ature range of interest is 4.18 × 10 J/kg.°C.
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