Question

Calculate the temperature of milk coming out from a homogenizer if temperature at inlet is 64\(^\circ\)C and inlet and outlet pressures are 205 bar and 5 bar respectively

• A. 66\(^\circ\)C
• B. 69\(^\circ\)C
• C. 70\(^\circ\)C
• D. 72\(^\circ\)C

Hint:

For rapid calculations under exam conditions, use this dairy engineering rule of thumb:
Every 40 bar pressure drop in a homogenizer increases the milk temperature by 1\(^\circ\)C.
For \(\Delta P = 200\text{ bar}\):
\[ \Delta T = \frac{200}{40} = 5\ ^\circ\text{C} \]
This gives the answer immediately.

Answer 1

The Correct Option is B