Chemical Engineering - Heat Transfer - Discussion

Discussion Forum : Heat Transfer - Section 2 (Q.No. 12)
12.
Out of the following four assumptions used in the derivation of the equation for LMTD , which one is subject to the largest deviation in practice ?
Constant overall heat transfer co-efficient.
Constant rate of fluid flow.
Constant specific heat.
No partial phase change in the system.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.

Vijay said:   9 years ago
Uniform.

Steady flow.

All the heat that comes from the hot stream goes into the cold stream (the hxgr is insulated from its surroundings).

No phase change.

Constant specific heats.

Negligible Kinetic and potential energy.

U is constant (or nearly so).

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