Consider the following statements regarding refrigerants:
1. Refrigerant NH3 is used in reciprocating compressors.
2. Refrigerant CO2 is used in reciprocating compressors.
3. Refrigerant R -11 is used in centrifugal compressors.
Which of these statements are correct?
Option (A)
1 and 3
Option (B)
1 and 2
2 and 3
1, 2 and 3
Correct Option:
Question Solution:
The reciprocating compressor are used for refrigerants which have comparatively low volume per kg and large differential pressure. Such as ammonia (R-717), R-11, R-12. R-22 and methyl chloride (R-40).