QUALITY MONITORING & CONTROL
Kilgore Reciprocating Compressor
Program
for Windows
Courtesy Ariel Corporation
The Kilgore Reciprocating Compressor Program is specifically designed for selecting appropriate compressor frame and cylinders for required applications. Also it provides for the calculation of the performance of any given compressor at various conditions. This is particularly useful for rental fleets and/or operating companies.
The program will accommodate almost any reciprocating compressor configuration up to a maximum of ten throws. Up to four different services may be used. Up to five stages in a single service with a maximum of six stages for all services may be used. Each throw may have a single cylinder, tandem pair cylinders, or be blank.
Enter/display/print results in either standard or metric units.
Standard: PsiA, PsiG, DegF, Bhp, Lbs,
MMSCFD, Cfm, LbMol/hr, Lb/hr
Metric: BarA,
BarG, KpaA, KpaG, DegC, Kw, Kgf,
Nm3hr, Sm3hr, KgMol/hr, Kg/hr
Inlet gas may be specified by specific gravity (natural gas) or by
component composition. Side streams, inlet or outlet, may be stipulated for suction of any
interstage. The program can calculate the amount of water condensed by the
aftercoolers. If the hydrocarbon condensate rate is stipulated the program will
calculate the effect of the condensate and/or water removed on the gas properties.
Principal results displayed or printed:
Suction/discharge pressures (flange
& internal)
each stage
Suction/discharge temperatures
Flow in required units
Rod loads (gas forces)
Combined rod loads (gas plus
inertia forces)
Bhp
Out-of-limit results are 'flagged'
Frame and cylinder data files for any manufacture may be created and maintained by the
program. Data files for Ariel and Gemini compressors may be obtained from their
respective manufacturer. The program may access the data files for auto-selection of
cylinders, or manual selection of cylinders. Auto-selection is useful as a
preliminary selection. If compressor data files are not available, the required data
may be by keyboard entry from manufacturer and/or vendor data.
Engine selection may be made from engine data created and maintained by the program.
Program calculates engine Bhp derated for elevation, ambient temperature, and allowance
for auxiliary power used.
Compressor performance may be calculated for single-acting double action cylinders (either
lifting or removing cylinder suction valves) and/or disabling a stage.
When the overall compression ratio is reduced sufficiently 'blow-thru' a stage may
occur. The program will recognize and note this condition.
Added cylinder clearance may be by variable volume pockets (VVPkt), valve spacers, or
non-standard clearance.
SPECIAL FEATURES:
The condensed water and/or condensate may be calculated. These have a significant
effect on the thermodynamic properties of the gas.
Multiple calculations, either simple or compound, may be run. Compound runs may have
up to three of the following incremental variables:
Suction Pressure
Discharge Pressure
RPM
Clearance, either VVPkt or
Non-Std-Clearance
Multiple adjusted calculations varying VVPkts on any/or all stages to obtain desired flow
or desired Bhp. The desired Bhp may be stipulated or the maximum engine
allowable. Any combination of the following incremental variables may be used:
Suction Pressure
Discharge Pressure
RPM
Pressure drops from piping losses may be stipulated. Once design conditions are
determined or actual operating losses are available, they can be calculated to obtain
pressure drops at various operating conditions.
The aftercooler outlet temperature may be stipulated or dynamically calculated. The
dynamic calculations may be based on aftercooler manufacturer's data. If
manufacturer's data is unavailable the program can develop a model of the required cooler.
The use of dynamic calculation of piping losses and/or aftercooler performance
significantly improves the accuracy of compressor calculated performance over varying
conditions.
Data from an on-site performance test may be entered as a 'signature' run. The
program calculates adjustment parameters to provide accurate calculations at the on-site
conditions and to provide reliable results at other operating conditions. The
adjustment parameters further improves the accuracy provided by dynamic calculation of
piping losses and aftercooler performance.
FUTURE FEATURES:
Display/print of performance charts at varying conditions and parameters.
Thermodynamic mass balance calculations including system balance for recycle of interstage
condensate.