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water. 11-78 A shell-and-tube heat exchanger with two shell passes and eight tube passes is used to heat ethyl alcohol (c₂=2670 J/kg-K) in the tubes from 25°C to 70°C at a rate of 2.1 kg/s. The heating is to be done by water (c=4190 J/kg-K) that enters the shell side at 95°C and leaves at 45°C. If the over- all heat transfer coefficient is 950 W/m².K, determine the heat transfer surface area of the heat exchanger. 70°C Ethyl alcohol 25°C 2.1 kg/s Water 95°C 45°C FIGURE P11-78 (8-tube passes)

water. 11-78 A shell-and-tube heat exchanger with two shell passes and eight tube passes is used to heat ethyl alcohol (c₂=2670 J/kg-K) in the tubes from 25°C to 70°C at a rate of 2.1 kg/s. The heating is to be done by water (c=4190 J/kg-K) that enters the shell side at 95°C and leaves at 45°C. If the over- all heat transfer coefficient is 950 W/m².K, determine the heat transfer surface area of the heat exchanger. 70°C Ethyl alcohol 25°C 2.1 kg/s Water 95°C 45°C FIGURE P11-78 (8-tube passes)

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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%20Fundamentals%20and%20Applications... plied by hot oil (cp=2300 J/kg-K) that enters the shell side at 170°C at a rate of 10 kg/s. For a tube-side overall heat transfer coefficient of 350 W/m²-K, determine the heat transfer surface area on the tube side. Answer: 25.7 m² r t g S S ) es _11 K. ce te 11-77 Repeat Prob. 11-76 for a mass flow rate of 3 kg/s for water. 11-78 A shell-and-tube heat exchanger with two shell passes and eight tube passes is used to heat ethyl alcohol (c, = 2670 J/kg.K) in the tubes from 25°C to 70°C at a rate of 2.1 kg/s. The heating is to be done by water (c=4190 J/kg-K) that enters the shell side at 95°C and leaves at 45°C. If the over- all heat transfer coefficient is 950 W/m².K, determine the heat transfer surface area of the heat exchanger. 70°C- 11-79 Ethyl alcohol 25°C 2.1 kg/s Water 95°C 45°C FIGURE P11-78 (8-tube passes) PtD Consider a shell-and-tube heat exchanger in a indo milk pasteurizing unit in which the milk flowing is to be heated from 20°C by hot water initially at 140°C and flowing at a toto of 5 kale The milk flows through 20 thin - 23°C ^ Desktop
Transcribed Image Text:%20Fundamentals%20and%20Applications... plied by hot oil (cp=2300 J/kg-K) that enters the shell side at 170°C at a rate of 10 kg/s. For a tube-side overall heat transfer coefficient of 350 W/m²-K, determine the heat transfer surface area on the tube side. Answer: 25.7 m² r t g S S ) es _11 K. ce te 11-77 Repeat Prob. 11-76 for a mass flow rate of 3 kg/s for water. 11-78 A shell-and-tube heat exchanger with two shell passes and eight tube passes is used to heat ethyl alcohol (c, = 2670 J/kg.K) in the tubes from 25°C to 70°C at a rate of 2.1 kg/s. The heating is to be done by water (c=4190 J/kg-K) that enters the shell side at 95°C and leaves at 45°C. If the over- all heat transfer coefficient is 950 W/m².K, determine the heat transfer surface area of the heat exchanger. 70°C- 11-79 Ethyl alcohol 25°C 2.1 kg/s Water 95°C 45°C FIGURE P11-78 (8-tube passes) PtD Consider a shell-and-tube heat exchanger in a indo milk pasteurizing unit in which the milk flowing is to be heated from 20°C by hot water initially at 140°C and flowing at a toto of 5 kale The milk flows through 20 thin - 23°C ^ Desktop
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