3. A double pipe heat exchanger will be used to heat water from 40 oC to 85 oC flowing 70 kg / min. Cp of water = 4.183 kJ / kg. K. Hot fluid used hot oil. Hot oil enters HE 120 oC and exits at 85 oC. Oil Cp = 1.7 kj / kg K. a. Calculate the heat needed to increase water temperature b. What is the flow rate of oil entering the HE?
3. A double pipe heat exchanger will be used to heat water from 40 oC to 85 oC flowing 70 kg / min. Cp of water = 4.183 kJ / kg. K. Hot fluid used hot oil. Hot oil enters HE 120 oC and exits at 85 oC. Oil Cp = 1.7 kj / kg K. a. Calculate the heat needed to increase water temperature b. What is the flow rate of oil entering the HE?
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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3. A double pipe heat exchanger will be used to heat water from 40 oC to 85 oC flowing 70 kg / min. Cp of water = 4.183 kJ / kg. K. Hot fluid used hot oil. Hot oil enters HE 120 oC and exits at 85 oC. Oil Cp = 1.7 kj / kg K.
a. Calculate the heat needed to increase water temperature
b. What is the flow rate of oil entering the HE?

Transcribed Image Text:3.
Suatu double pipe heat exchanger akan digunakan untuk memanaskan air dari 40 oC menjadi 85 oC mengalir
70 kg/ min. Cp air = 4,183 kJ/ kg. K. Fluida panas yang digunakan minyak panas. Minyak panas masuk HE 120
oC dan keluar pada 85 oC. Cp minyak = 1,7 kj/ kg K.
a. Hitung panas yang dibutuhkan untuk menaikan suhu air
b. Berapakah laju alir minyak masuk HE tersebut?
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