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1. |
Out of the following four assumptions used in the derivation of the equation for LMTD [LMTD = (Δt1 – Δt2)/ln(Δt1/Δt2)], 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» C. Constant specific heat | |