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QUESTION 5: HEAT EXCHANGERS [21] A shell-and-tube heat exchanger (Figure 5.1) with 2-shell passes and 8-tube passes is u
Posted: Thu Jul 14, 2022 2:44 pm
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- Question 5 Heat Exchangers 21 A Shell And Tube Heat Exchanger Figure 5 1 With 2 Shell Passes And 8 Tube Passes Is U 1 (82.98 KiB) Viewed 41 times
QUESTION 5: HEAT EXCHANGERS [21] A shell-and-tube heat exchanger (Figure 5.1) with 2-shell passes and 8-tube passes is used to heat ethyl alcohol (cp=2670 J/kg⋅K) in the tubes from 25∘C to 70∘C that flows at a rate of 2.1 kg/s. The heating is to be done by water (cp=4190 J/kg⋅K) that enters the shell side at 95∘C and leaves at 45∘C. The overall heat transfer coefficient is 950 W/m2⋅K. 5.1 Determine the heat transfer surface area of the heat exchanger. (17) 5.2 How is thermal resistance due to fouling in a heat exchanger accounted for? How do the fluid velocity and temperature affect fouling? (4) rigure s.1: Heat exchanger