2. Double pipe heat exchanger is used to heat water from 20 ° C to 80 ° C the flow rate is 1.2 kg / s. The hot fluid is hot water entering the double pipe at 160 ° C at a flow rate of 2 kg / s. Overall heat transfer coefficient 640 W / m². K. Cp of hot water = 4.31 kJ / kg. K and Cp of cold water = 4.18 kJ / kg. K a. Calculate the maximum heat transferred in this system b. What is the actual heat transferred c. What is the effectiveness of this tool

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
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2. Double pipe heat exchanger is used to heat water from 20 ° C to 80 ° C the flow rate is 1.2 kg / s. The hot fluid is hot water entering the double pipe at 160 ° C at a flow rate of 2 kg / s. Overall heat transfer coefficient 640 W / m². K. Cp of hot water = 4.31 kJ / kg. K and Cp of cold water = 4.18 kJ / kg. K

a. Calculate the maximum heat transferred in this system

b. What is the actual heat transferred

c. What is the effectiveness of this tool

d. Calculate NTU

e. What is the surface area of ​​the heat transfer

2. Penukar panas pipa ganda digunakan untuk memanaskan air dari 20°C menjadi 80°C
laju alirnya 1,2 kg/s. Fluida panasnya adalah air panas yang masuk pipa ganda pada
160°C pada laju alir 2 kg/s. Koefisien perpindahan panas menyeluruh 640 W/m².K.
Cp air panas = 4,31 kJ/ kg. K dan Cp air dingin = 4.18 kJ/ kg. K
a. Hitunglah panas maksimum yang dipindahkan pada sistem ini
b. Berapakah panas sebenarnya yang dipindahkan
c. Berapakah efektivitas alat ini
d. Hitung NTU
e. Berapakah luas permukaan perpindahan panasnya
Transcribed Image Text:2. Penukar panas pipa ganda digunakan untuk memanaskan air dari 20°C menjadi 80°C laju alirnya 1,2 kg/s. Fluida panasnya adalah air panas yang masuk pipa ganda pada 160°C pada laju alir 2 kg/s. Koefisien perpindahan panas menyeluruh 640 W/m².K. Cp air panas = 4,31 kJ/ kg. K dan Cp air dingin = 4.18 kJ/ kg. K a. Hitunglah panas maksimum yang dipindahkan pada sistem ini b. Berapakah panas sebenarnya yang dipindahkan c. Berapakah efektivitas alat ini d. Hitung NTU e. Berapakah luas permukaan perpindahan panasnya
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