Question

As a general rule:

A) evaporator pressure is higher than the condenser pressure.
B) the evaporator temperature should be between 5°C and 10°C lower than the temp of the cooled medium.
C) expansion valve lets the pressure equalize on both sides.
D) the cooling medium for the condenser must be 5°C cooler than the condenser.
E) none of the above.

Answer 1

The evaporator temperature should be between 5°C and 10°C lower than the temperature of the cooled medium.

Step-by-step explanation:

As a general rule, the correct answer is B) the evaporator temperature should be between 5°C and 10°C lower than the temperature of the cooled medium. The evaporator is responsible for absorbing heat from the cooled medium and converting it into a gas. This conversion occurs at a lower temperature than the cooled medium, allowing for efficient heat transfer. The other options are incorrect because the evaporator pressure is usually lower (not higher) than the condenser pressure, the expansion valve does not necessarily let the pressure equalize on both sides, and the cooling medium for the condenser can vary depending on the specific system.