In a single-effect milk evaporator with MVR, vapor evaporates at boiling temperature $T_{evap} = 60^\circ\text{C}$. The mechanical compressor raises vapor pressure such that its saturation condensing temperature becomes $T_{cond} = 66^\circ\text{C}$. The apparent temperature lift $\Delta T = 66 - 60$ in $^\circ\text{C}$ is:
Options:
(A) $6^\circ\text{C}$
(B) $16^\circ\text{C}$
(C) $60^\circ\text{C}$
(D) $126^\circ\text{C}$
Answer Key:
A
Step-by-Step Solution & Explanation
$\Delta T = 66 - 60 = 6^\circ\text{C}$, providing the necessary driving temperature difference for heat transfer across the falling film calandria.