Compressor Relocation Or Reapplication; Table 18 Cylinder Discharge Formula - GE H301 Series Operating Manual

56 | Chapter 5: Operation
Logic Controller (PLC) using the following input values and formula to calculate the
expected DT.
Programming of the actual alarm and shut down points should be password
protected to allow changes by only those qualified individuals authorized to make
changes.
DTal = DT + 12°F.
DTsd = DT + 25°F. Discharge Temperature Formula:
DT = [(460 + ST) x (((DP x 1.03) + ATM) / ((SP x .97) + ATM))^((N-1)/N)] – 460
Where:
DT = Discharge gas temperature in degrees °F, at cylinder discharge flange.
ST = Suction gas temperature in degrees °F, at cylinder inlet flange.
DP = Discharge gas pressure in Psig, at cylinder discharge flange.
ATM = Atmospheric pressure in Pisa.
SP = Inlet gas pressure in Psig, at cylinder inlet flange.
N = Ratio of gas specific heats. Gas 'K' value may also be used.
(Default 'N' value is 1.26)
Table 1 6 Cylinder discharge formula
The unit's operating conditions must not exceed the cylinder's

Compressor Relocation or Reapplication

Each compressor is configured for a specific application. Before starting the
compressor, verify with the packager to determine if changes are required.
Typical scenarios include:
1. Compressor relocation to a different site.
2. Gas pressures, temperatures or flow requirements
3. Gas properties (gas analysis)
4. Cylinder reconfiguration, size or stage
5. Tailored valves
6. Driver type, rotating speed or torque
7. Cylinder and packing lubrication type change
Rated Discharge Pressure (RDP).
Complies with ANSI Z535, ISO 3864, OSHA 1910.145 (f) (9)