Calculate the length of tubes required given the flow rates, temperatures and process fluids for a 1-1 shell and tube heat exchanger in COUNTER FLOW. Carbon steel tubes will be used. Include the effects of fouling in the calculations.

It consists of two fluids: water and ethylene glycol.

Given data:

Fluid 1: Water

Inlet temperature (T1): 89C Outlet temperature (T2): 57C Mass flow rate: 56 kg/s

Fluid 2: Ethylene glycol

Inlet temperature (T3): 19C Outlet temperature (T4): 37C Conductive heat transfer coefficient for ethylene glycol (h): 1200 W/m^2.k

Inside diameter of the tubes: 18,846 mm outside diameter of the tubes: 26,67 mm Wall thickness of the tubes: 3,912 mm Inside area of the tubes: 2,790 cm^2

Pipe weight : 2.190 kg/m

Water weight: 0.279 kg/m

Number of tubes: 25

COUNTER FLOW WITH FOULING