Chemical Engineering - Heat Transfer - Discussion
Discussion Forum : Heat Transfer - Section 4 (Q.No. 34)
34.
The rate of heat transfer through a pipe wall is given by, 
. For cylinder of very thin wall, q can be approximated by
. For cylinder of very thin wall, q can be approximated by
Discussion:
4 comments Page 1 of 1.
Sumit Patil said:
3 years ago
The Correct answer is B.
AnR said:
4 years ago
Option (D) is dimensionally not correct. The average of the two radii should be divided by the initial radii to make it correct.
Solanki Savan said:
5 years ago
The right Answer is B.
Namani said:
6 years ago
Since the very thin walled cylinder logarithmic value can be approximately equal to average value of two radii.
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