Which type of compressor chiller uses a pair of rotors to compress the refrigerant gas?
A) Reciprocating compressor chillers B) Centrifugal compressor chillers
C) Scroll compressor chillers D) Screw compressor chillers
Question 2
The most common type of demand defrost control:
A) Senses the suction pressure.
B) Measures the temperature difference between the coil temperature and the ambient temperature.
C) Senses the compressor current draw.
D) Operates strictly on time.
