A shell and tube heat exchanger with one shell-pass and 8 tube passes is used to heat exchanger engine oil (cp = 2.10 kJ/kg.K) in the tubes from %3D 5°C to 45°C at a rate of 45 kg/s. The heating is to be done by using 60 kg/s of high pressure water at 90°C (cp = 4.20 kJ/kg.°C). If the overall heat transfer coefficient U is 320 W/m2.K. Determine the heat transfer surface area of the heat exchanger using: a) The LMTD method b) The e- NTU method. Water 90C 60 kg/s 45C 45 kg/s Engine oil SC 45 kg/s Water
A shell and tube heat exchanger with one shell-pass and 8 tube passes is used to heat exchanger engine oil (cp = 2.10 kJ/kg.K) in the tubes from %3D 5°C to 45°C at a rate of 45 kg/s. The heating is to be done by using 60 kg/s of high pressure water at 90°C (cp = 4.20 kJ/kg.°C). If the overall heat transfer coefficient U is 320 W/m2.K. Determine the heat transfer surface area of the heat exchanger using: a) The LMTD method b) The e- NTU method. Water 90C 60 kg/s 45C 45 kg/s Engine oil SC 45 kg/s Water
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:A shell and tube heat
exchanger with one shell-pass
and 8 tube passes is used to
heat exchanger engine oil (cp =
2.10 kJ/kg.K) in the tubes from
5°C to 45°C at a rate of 45
kg/s. The heating is to be done
by using 60 kg/s of high
pressure water at 90°C (cp =
4.20 kJ/kg.°C). If the overall
heat transfer coefficient U is
320 W/m2.K. Determine the
heat transfer surface area of
the heat exchanger using:
a) The LMTD method
b) The e -
NTU method.
Water
90C
60 kg/s
45C
45 kg/s
Engine oil
5C
45 kg/s
Water+
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