7.(a) State THREE functions of air conditioning.
(b) With referance to air conditioning, explain EACH of the following:
(i) absolute humidity;
(ii) relative humidity;
(iii) dew point.
- With reference to Marine Air Conditioning Systems, explain EACH of the following expressions:
(a) wet bulb temperature(2)
(b) dry bulb temperature;(2)
(c) comfort zone;(2)
(d) psychrometric chart;(2)
(e) relative humidity.(2)
- With reference to the risk of legionella bacteria in air conditioning plants:
(a) state FOUR main areas which are considered to be a breeding ground for the bacteria, outlining a reason for EACH;(8)
(b) describe how the risks of the existence of the bacteria can be reduced.(2)