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Class 4 (4th Engineer) MEKG 📅 Sep 2023

Exam Question

Describe the functional components of a reefer plant for the domestic refrigeration system and temperatures to be maintained in different cold rooms (8)

(a) Describe the pressure switches (2)

(B) The tubular heat exchanger (2)

(c) The Oil separator and (2)

(d) The drier system (2)

Exam question diagram

Reference Answer

### Functional Components of a Domestic Reefer Plant
A domestic refrigeration plant on a ship operates on the vapor-compression refrigeration cycle to maintain specified low temperatures in various provision rooms. The key functional components are:
1. **Compressor**:
* **Function**: This is the heart of the system. It draws low-pressure, low-temperature superheated refrigerant vapor from the evaporator and compresses it to a high-pressure, high-temperature superheated vapor.

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