Question

29. A coil has an inlet temperature of 70oF and outlet of 80oF. If the mean temperature of the coil is 120oF, find the bypass factor of the coil.

Answer 1

for heating coil $t_3<t_2<t_1$

$t_1=70$

$t_2=80$

t$_3=120$

$BPF=\frac{t_3-t_2}{t_3-t_1}$

$BPF=\frac{120-80}{120-70}$

=0.8