If fouling takes place, h is going to be higher, and for the same heat transfer, the surface area should be: (a) increased (b) decreased (c) unchanged (i). Corrosion fouling in a phosphoric acid...

If fouling takes place, h is going to be higher, and for the same heat transfer, the surface area should be:

(a) increased (b) decreased (c) unchanged

(i). Corrosion fouling in a phosphoric acid condensation process may be prevented by the use of a:

(a) counter flow arrangement

(b) plate heat exchanger

(c) parallel flow arrangement

(d) Teflon coating over low-temperature exchanger surfaces