Overall heat transfer co-efficient of a particular tube is U1
. If the same
tube with some dirt deposited on either side has coefficient U2
, then
(A) U1 = U2
(B) U2 > U1
(C) U1 > U2
(D) U1 = dirt factor - U2
. If the same
tube with some dirt deposited on either side has coefficient U2
, then
(A) U1 = U2
(B) U2 > U1
(C) U1 > U2
(D) U1 = dirt factor - U2