Oil is cooled from an initial temperature of 96°C to 60°C by water in an adiabatic concentric heat exchanger. The flow rates for the oil and water are 0.7 kg s-1 and 0.4 kg s-1 respectively. If water enters the heat exchanger with a temperature of 20°C, what is the temperature of the water when it leaves the heat exchanger? State any assumptions made in the calculation. Assume the following heat capacities are constant as a function of temperature, CP(Oil) = 2131 J kg-1 K-1 and Cp(Water) = 4178 J kg-1 K-1.

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
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Oil is cooled from an initial temperature of 96°C to 60°C by water in an adiabatic concentric
heat exchanger. The flow rates for the oil and water are 0.7 kg s-1 and 0.4 kg s-1 respectively.
If water enters the heat exchanger with a temperature of 20°C, what is the temperature of
the water when it leaves the heat exchanger? State any assumptions made in the
calculation.
Assume the following heat capacities are constant as a function of temperature, CP(Oil) =
2131 J kg-1 K-1 and Cp(Water) = 4178 J kg-1 K-1.

Oil is cooled from an initial temperature of 96°C to 60°C by water in an adiabatic concentric
heat exchanger. The flow rates for the oil and water are 0.7 kg s' and 0.4 kg s respectively.
If water enters the heat exchanger with a temperature of 20°C, what is the temperature of
the water when it leaves the heat exchanger? State any assumptions made in the
calculation.
Assume the following heat capacities are constant as a function of temperature, Ce(Oil) =
2131 J kg K' and Co(Water) = 4178 J kg'K*.
(6 marks)
Transcribed Image Text:Oil is cooled from an initial temperature of 96°C to 60°C by water in an adiabatic concentric heat exchanger. The flow rates for the oil and water are 0.7 kg s' and 0.4 kg s respectively. If water enters the heat exchanger with a temperature of 20°C, what is the temperature of the water when it leaves the heat exchanger? State any assumptions made in the calculation. Assume the following heat capacities are constant as a function of temperature, Ce(Oil) = 2131 J kg K' and Co(Water) = 4178 J kg'K*. (6 marks)
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