Chemical Engineering - Heat Transfer - Discussion
Discussion Forum : Heat Transfer - Section 11 (Q.No. 24)
24.
The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m2.K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m2.K. The overall heat transfer co-efficient at this time is
Discussion:
3 comments Page 1 of 1.
Akash bopche said:
3 years ago
1/U = 1/Uo + 1/Hdo.
1/U = 1/400 + 1/2000,
1/U = 0.0025 + 0.0005,
1/U = 0.003,
U = 1/0.003,
U = 333.3333.
1/U = 1/400 + 1/2000,
1/U = 0.0025 + 0.0005,
1/U = 0.003,
U = 1/0.003,
U = 333.3333.
(2)
Himanshu said:
9 years ago
1/U = 1/Uo + 1/Hdo.
= 1/400 + 1/ 2000,
U = 333.33.
= 1/400 + 1/ 2000,
U = 333.33.
KHUSHBU CHAUDAHRY said:
1 decade ago
WITH FOULING FACTOR, 1/ U = 1/hi+1/ hd0+1/ho.
WITHOUT FOULING FACTOR, 1/ U0 = 1/hi+1/ho.
WITH FOULING FACTOR, 1/ U = 1/ U0+1/ hd0.
= 1/400+1/2000.
= 0.003.
SO, U = 333.333W/m2.
WITHOUT FOULING FACTOR, 1/ U0 = 1/hi+1/ho.
WITH FOULING FACTOR, 1/ U = 1/ U0+1/ hd0.
= 1/400+1/2000.
= 0.003.
SO, U = 333.333W/m2.
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