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1) List the significant elements of the simple vapour compression refrigeration system.

2) Provide the chemical formula and names of the refrigerants R-22 and R-12.

3) describe what do you mean by the hermetic sealed compressor? Also provide some of its advantage.

4) Specify the functions of the expansion device?

5) describe the two kinds of the components commonly used in thermostats?

6) describe how the reduction of evaporator capacity is established?

7) Describe the wet bulb temperature and dry bulb temperature.

8) describe what is cooling and de-humidification?

9) describe the room sensible heat factor. Describe how room sensible heat factor is drawn on the psychometric chart?

10) describe the following given term:

a) Fan total pressure

b) Fan total efficiency.

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