Q. 51 A balanced counter flow heat exchanger has a surface area of 
and overall
heat transfer coefficient of
entering at 0.4
kg/s and 280 K is to be preheated by the air leaving the system at 0.4 kg/s and
300 K. The outlet temperature (in K) of the preheated air is
(A) 290
(B) 300
(C) 320
(D) 350
Answer: (* )
Explanation:
Not Required.
