Levin
18-08-2003, 08:45 PM
Gentlemen,
If we use ***** 404A for ambient t=32 C (Condensation T=42 C, Condensation P=19bar,abs.) and inside t=-25 C (Evaporation T= -35, Evaporation P=1,65 bar,abs.) In this case the pressure ratio Pc/Pe=11,52. This is only for 2 stage unit if using the piston (reciprocating) compressor (Pc/Pe<9) or for 1 stage unit if using screw compressor (Pc/Pe<25). But Riva Cold offer model STL260Z032 for room V=210 m3. Am I wrong ?
:confused:
If we use ***** 404A for ambient t=32 C (Condensation T=42 C, Condensation P=19bar,abs.) and inside t=-25 C (Evaporation T= -35, Evaporation P=1,65 bar,abs.) In this case the pressure ratio Pc/Pe=11,52. This is only for 2 stage unit if using the piston (reciprocating) compressor (Pc/Pe<9) or for 1 stage unit if using screw compressor (Pc/Pe<25). But Riva Cold offer model STL260Z032 for room V=210 m3. Am I wrong ?
:confused: