Class 2 (2nd Engineer) MEKG 📅 Oct 2025

Exam Question

(a) Draw a line diagram of an accommodation air conditioning plant labelling the principal items and showing the direction of air flow. (5)

(b) State how:

(i) Accommodation air temperature is controlled, (4)

(ii) Humidity is controlled within prescribed comfort limits, (3)

(iii) Such an installation can contribute to the efficiency of ship's main plant. (3)

Reference Answer

### (a) Line Diagram of an Accommodation Air Conditioning Plant
A line diagram would be drawn showing the main components of a central air conditioning unit and the associated ducting for air distribution. The diagram must clearly label the direction of air and refrigerant flow.
**Principal Items to be Labelled:**
1. **Air Handling Unit (AHU):**

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