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Water at the rate of 230 kg/h at 35°C is available for use as a coolant in a double pipe heat exchanger whose total surface area is 1.4 m?. The water is to be used to cool oil [Cp= 2.1 kJ/(kg: °C)] from an initial temperature of 120°C. Because of other circumstances, an exit water temperature greater than 99°C cannot be allowed. The exit temperature of the oil must not be below 60°C. The overall heat transfer coefficient is 280 W/(m2.°C). Estimate the maximum flow rate of oil which may be cooled. Assumed that the flow rate of water is fixed at 230 kg/h.??

Water at the rate of 230 kg/h at 35°C is available for use as a coolant in a double pipe heat exchanger whose total surface area is 1.4 m?. The water is to be used to cool oil [Cp= 2.1 kJ/(kg: °C)] from an initial temperature of 120°C. Because of other circumstances, an exit water temperature greater than 99°C cannot be allowed. The exit temperature of the oil must not be below 60°C. The overall heat transfer coefficient is 280 W/(m2.°C). Estimate the maximum flow rate of oil which may be cooled. Assumed that the flow rate of water is fixed at 230 kg/h.??

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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Water at the rate of 230 kg/h at 35°C is available for use as a coolant in a double pipe heat exchanger whose total surface area is 1.4 m?. The water is to be used to cool oil [Cp= 2.1 kJ/(kg. *C)] from an initial temperature of 120°C. Because of other circumstances, an exit water temperature greater than 99°C cannot be allowed. The exit temperature of the oil must not be below 60°C. The overall heat transfer coefficient is 280 W/(m2.°C). Estimate the maximum flow rate of oil which may be cooled. Assumed that the flow rate of water is fixed at 230 kg/h.??
Transcribed Image Text:Water at the rate of 230 kg/h at 35°C is available for use as a coolant in a double pipe heat exchanger whose total surface area is 1.4 m?. The water is to be used to cool oil [Cp= 2.1 kJ/(kg. *C)] from an initial temperature of 120°C. Because of other circumstances, an exit water temperature greater than 99°C cannot be allowed. The exit temperature of the oil must not be below 60°C. The overall heat transfer coefficient is 280 W/(m2.°C). Estimate the maximum flow rate of oil which may be cooled. Assumed that the flow rate of water is fixed at 230 kg/h.??
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