A 1-2 shell and tube heat exchanger is used to heat glycerin (C3H8O3, b.R.= 290 °C, cp= 3.43 kJ/kg °C) from 20 °C to 50 °C when it flows through the very thin tubes (radius = 2 cm). Water (heat capacity = 4.174 kJ/kg° ° C) enters the shell at 80 °C and leaves at 40 °C. The total length of the tube is 60 m. The convection heat transfer coefficients between the tube and fluids are 25 W/m2 °C on the shell side and 160 W/m2 °C on the tube side. Determine the heat transfer rate in the heat exchanger method.

A 1-2 shell and tube heat exchanger is used to heat glycerin (C3H8O3, b.R.= 290 °C, cp= 3.43 kJ/kg °C) from 20 °C to 50 °C when it flows through the very thin tubes (radius = 2 cm). Water (heat capacity = 4.174 kJ/kg° ° C) enters the shell at 80 °C and leaves at 40 °C. The total length of the tube is 60 m. The convection heat transfer coefficients between the tube and fluids are 25 W/m2 °C on the shell side and 160 W/m2 °C on the tube side. Determine the heat transfer rate in the heat exchanger method.

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 7.46P

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Concept explainers

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.

Question

A 1-2 shell and tube heat exchanger is used to heat glycerin (C3H8O3, b.p.= 290 °C, cp= 3.43
kJ/kg °C) from 20 °C to 50 °C when it flows through the very thin tubes (radius =2 cm). Water
(heat capacity = 4.174 kJ/kg° ° C) enters the shell at 80 °C and leaves at 40 °C. The total length
of the tube is 60 m. The convection heat transfer coefficients between the tube and fluids are 25
W/m2 °C on the shell side and 160 W/m2 °C on the tube side. Determine the heat transfer rate in
the heat exchanger method.

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