Class 4 (4th Engineer) MEKG 📅 Dec 2025

Exam Question

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

(b) In reference to a domestic refrigeration system briefly describe the following: (8)

(i) pressure switches

(ii) tubular heat exchangers

(iii) oil separator

(iv) drier system

Reference Answer

### (a) Functional Components of a Domestic Reefer Plant & Room Temperatures
A ship's domestic refrigeration plant operates on the vapor-compression cycle to maintain specific low temperatures in insulated provision rooms. The system's primary function is to absorb heat from these rooms and reject it to the atmosphere or sea water.
**1. Functional Components:**
* **Compressor:**

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