5.47 Design a STHX that will heat liquid octane from 70°F to 110°F using a 20% propylene glycol solution available at 165°F. The flow rate of both fluids is the same, at 110,000 lbm/h. The fouling factors for both fluids can be considered equal at 0.002 h·ft2·°F/Btu. Specify the following information about the heat exchanger:

a. Number of shell and tube passes

b. Diameter of the shell

c. Placement of the fluids (which fluid is in the shell? in the tubes?)

d. Type of tubes used in the shell (BWG specification)

e. Pitch of the tubes

f. Number of active tubes g. Length of the tubes h. Outlet temperatures of the octane and propylene glycol solution i. Pressure drop of each fluid in the heat exchanger