1. TEMA E shell-and-tube exchangers are generally designed with an approximate minimum log-mean…

1. TEMA E shell-and-tube exchangers are generally designed
with an approximate minimum log-mean temperature difference correction factor F
of:

(a) 0.90 (b) 0.80 (c) 0.40 (d) 0.98 (e) no limit

Hint: No temperature cross is desired in the exchanger.

2. In a heat exchanger, the effectiveness generally
increases with:

(a) increasing NTU (b) increasing C*

(c) increasing the mixing of fluids at a cross section

(d) increasing F