3. An engineer intends to use a simple double pipe counter flow heat exchanger to preheat process water with process fluid which has to be cooled from 90°C to 40°C. The flow rate of process water is 3 kg/s. Calculate the heat transfer area if the flow rate of the process fluid is 6000 kg/h and the overall heat transfer coefficient of the héat exchanger is 1000 W/m².°C. a. Determine the length of the heat exchanger if the inner pipe carrying the process fluid has an inside diameter of 5 cm. b. Assume the specific heat capacities of water and the process fluid are Cp, water = 4.20 kJ/kg "C and Cp, nuid=4.5 kJ/kg °C respectively.
3. An engineer intends to use a simple double pipe counter flow heat exchanger to preheat process water with process fluid which has to be cooled from 90°C to 40°C. The flow rate of process water is 3 kg/s. Calculate the heat transfer area if the flow rate of the process fluid is 6000 kg/h and the overall heat transfer coefficient of the héat exchanger is 1000 W/m².°C. a. Determine the length of the heat exchanger if the inner pipe carrying the process fluid has an inside diameter of 5 cm. b. Assume the specific heat capacities of water and the process fluid are Cp, water = 4.20 kJ/kg "C and Cp, nuid=4.5 kJ/kg °C respectively.
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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Transcribed Image Text:3. An engineer intends to use a simple double pipe counter flow heat exchanger to preheat
process water with process fluid which has to be cooled from 90°C to 40°C. The flow rate of
process water is 3 kg/s.
Calculate the heat transfer area if the flow rate of the process fluid is 6000 kg/h and
the overall heat transfer coefficient of the héat exchanger is 1000 W/m².°C.
a.
Determine the length of the heat exchanger if the inner pipe carrying the process fluid
has an inside diameter of 5 cm.
b.
Assume the specific heat capacities of water and the process fluid are Cp, water = 4.20 kJ/kg "C
and Cp, nuid=4.5 kJ/kg °C respectively.
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