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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📊 Heat Transfer

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

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✅ Correct Answer: (B) Constant rate of fluid flow

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