high

low

same

none of these

single stage compression

multi-stage compression without intercooling

multi-stage compression with intercooling

none of these

back pressure

critical pressure

discharge pressure

none of these

0.2

0.3

0.4

0.5

0.1 bar and 20 Degree C

1 bar and 20 Degree C

0.1 bar and 40 Degree C

1 bar and 40 Degree C