Class 4 (4th Engineer) MEKG 📅 Jul 2022

Exam Question

(a) Describe the functional components of a reefer plant for the domestic refrigeration plant and temperatures to be maintained in diferent cold rooms; (10)

(b) Describe the presure switches; the tubular heat exchanger; the Oli separator and, the drier system. (6)

Reference Answer

### (a) Functional Components of a Reefer Plant & Room Temperatures
A ship's domestic refrigeration plant operates on the vapor compression cycle. Its primary function is to transfer heat from the cold storage rooms to a cooling medium (typically seawater or the ship's LT central cooling water), thus maintaining prescribed low temperatures for provisions.
#### 1. Functional Components
The main components and their functions within the cycle are as follows:

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