Q7
(a) Draw a block diagram for a fully automated accommodation air conditioning unit, labelling the component parts and indicating the directions of air flow.
(8)
(b) Explain why the unit includes means of dehumidification and humidification.
(4)
(c) A chart is used for ensuring that the accommodation conditions are within the so-called Comfort Zone: what useful information does the chart give?
(4)
Reference Answer
### (a) Block Diagram of a Fully Automated Accommodation Air Conditioning Unit A fully automated accommodation air conditioning unit is designed to maintain the internal environment within a pre-defined 'Comfort Zone' by controlling temperature, humidity, and air purity, irrespective of external ambient conditions. The system operates on a mix of fresh and recirculated air. **Component Parts and Air Flow:** 1. **Air Intake & Mixing Chamber:**
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