A 2-shell passes and 4-tube passes heat exchanger is used to heat glycerin from 20oC to 50oC by hot water, which enters the thin-walled 2-cm-diameter tubes at 80oC and leaves at 40oC . The total length of the tubes in the heat exchanger is 60 m. The convection heat transfer coefficient is 25 W/m2K on the glycerin (shell) side and 160 W/m2K on the water (tube) side. Determine the rate of heat transfer in the heat exchanger (a) before any fouling and (b) after fouling with a fouling factor of 0.0006 m2K/W occurs on the outer surfaces of the tubes

A 2-shell passes and 4-tube passes heat exchanger is used to heat glycerin from 20oC to 50oC by hot water, which enters the thin-walled 2-cm-diameter tubes at 80oC and leaves at 40oC . The total length of the tubes in the heat exchanger is 60 m. The convection heat transfer coefficient is 25 W/m2K on the glycerin (shell) side and 160 W/m2K on the water (tube) side. Determine the rate of heat transfer in the heat exchanger (a) before any fouling and (b) after fouling with a fouling factor of 0.0006 m2K/W occurs on the outer surfaces of the tubes

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.24P

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A two-shell passes and four-tube passes heat exchanger is used to heat glycerin from 20°C to 50°C by hot water, which enters the thin-walled 2-cmdiameter tubes at 80°C and leaves at 40°C. The total length of the tubes in the heat exchanger is 60 m. The convection heat transfer coefficient is 25 W/m2∙K on the glycerin (shell) side and 160 W/m2∙K on the water (tube) side. Determine the rate of heat transfer in the heat exchanger (a) before any fouling and (b) after fouling with a fouling factor of 0.0006 m2∙K/W occurs on the outer surfaces of the tubes.
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