Exam Question

### Functional Components of a Domestic Reefer Plant and Room Temperatures
A ship's domestic refrigeration plant operates on the vapor compression cycle to maintain specific low temperatures in various cold rooms for provisions. The key functional components are as follows:
* **Compressor:** This is the heart of the system, typically a reciprocating type for domestic plants. It draws in low-pressure, low-temperature refrigerant vapor from the evaporator and compresses it into a high-pressure, high-temperature superheated vapor. This action increases the refrigerant's energy level and circulates it through the system.
* **Condenser:** This is a shell-and-tube heat exchanger. The high-pressure, high-temperature refrigerant vapor from the compressor flows into the shell. A cooling medium, typically the ship's LT (Low Temperature) Central Cooling Water, flows through the tubes. Heat is transferred from the hot refrigerant to the cooling water, causing the refrigerant to desuperheat and condense into a high-pressure, warm liquid.