Question 3
- Define each of the following psychrometric properties:
- humidity;
- dry bulb temperature;
- wet bulb temperature.
-
- State two functions of a compressor in vapour compression system.
- List two components of an absorption refrigeration system.
Observation
The expected responses are:
(b) (i) Functions of a compressor in vapour compression system
- It sucks in vapor refrigerant from the evaporator.
- It compresses the vapour refrigerant thereby increasing both the temperature and pressure.
- It discharges the refrigerant into the condenser.
(ii) Components of an absorption refrigeration system
- Generator
- Condenser
- Evaporator
- Absorber
- Percolator tube
- Valve
- Separator