22-56 A 1-shell-pass and 8-tube-passes heat exchanger is used to heat glycerin (cp= 2.5 kJ/kg-°C) from 27°C to 60°C by hot water (c=4.18 kJ/kg-°C) that enters the thin-walled 1.3-cm-diameter tubes at 80°C and leaves at 50°C. The total length of the tubes in the heat exchanger is 120 m. The con- vection heat transfer coefficient is 23 W/m² °C on the glyc- erin (shell) side and 280 W/m²°C on the water (tube) side. Determine the rate of heat transfer in the heat exchanger (a) before any fouling occurs and (b) after fouling with a fouling factor of 0.00035 m²°C/W on the outer surfaces of the tubes.
22-56 A 1-shell-pass and 8-tube-passes heat exchanger is used to heat glycerin (cp= 2.5 kJ/kg-°C) from 27°C to 60°C by hot water (c=4.18 kJ/kg-°C) that enters the thin-walled 1.3-cm-diameter tubes at 80°C and leaves at 50°C. The total length of the tubes in the heat exchanger is 120 m. The con- vection heat transfer coefficient is 23 W/m² °C on the glyc- erin (shell) side and 280 W/m²°C on the water (tube) side. Determine the rate of heat transfer in the heat exchanger (a) before any fouling occurs and (b) after fouling with a fouling factor of 0.00035 m²°C/W on the outer surfaces of the tubes.
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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