[Solved] Out of the following four assumptions used in the derivation of the equation for LMTD [LMTD = (∆t1 - ∆t2)/ln(∆t1/∆t2)], which one is subject to the largest deviation in practice ?

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Q.	Out of the following four assumptions used in the derivation of the equation for LMTD [LMTD = (∆t1 - ∆t2)/ln(∆t1/∆t2)], which one is subject to the largest deviation in practice ?
A.	Constant overall heat transfer co-efficient.
B.	Constant rate of fluid flow
C.	Constant specific heat
D.	No partial phase change in the system
Answer» B. Constant rate of fluid flow

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