(b) Define a suitable tube bundle and state (using diagrams where necessary) the following specifications. Marks will be awarded for numerical justification of your specifications and a clear methodology which references the literature you have used. State all assumptions and report your specification on the working sheet overleaf. (i) Outside diameter (d), length (L) & number of tubes (Nt). (ii) Tube pitch (P) & Number of Passes (iii) Bundle diameter (Db) (iv) (v) Bundle-Shell Clearance (vi) (vii) Shell diameter (Di) Shell & tube side fouling factors (hfo, hfi) Overall Heat Transfer Coefficient (U) (viii) Heat Transfer Area (A) [20 Marks] Part (b) d = P= Clearance = hfo = mm Nt = mm L = mm Npasses = Db = mm mm | U= m/s W/mC A = m mm | D = W/mC h =