P-V diagram simulation: a new approach to modeling reciprocating compressor performance
Exxon's King Ranch Gas Plant operates twenty-seven integral engine/compressors totaling 49,000 horsepower for inlet gas compression. The plant no longer depends on theoretical volumetric efficiency, calculated throughput, and brake horsepower per million curves, for engine loading. A computer model has been developed that utilizes the pressure-volume relationship within individual compressor cylinders to predict horsepower independently of throughput. The data base for this new approach was derived from routine tests conducted with a digital engine/compressor analyzer. The study used to develop this program has provided new experience and information about the expected value of the polytropic exponent of compression, ''n''. With only this ''n'' value, clearance data, and approximate values for inlet and discharge pressure losses, individual cylinder performance can be predicted within an accuracy of two percent. This paper addresses key aspects of the new approach, and presents case history test results. The resulting compressor loading data permit operating personnel to load engines at rated capacity without concern for overload, resulting in increased fuel efficiency and greater plant throughput. A Hewlett-Packard 41-CV calculator version of the simulator is listed in the Appendix.
- Research Organization:
- Exxon Co. USA
- OSTI ID:
- 5289573
- Report Number(s):
- CONF-8310121-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE12192; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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030300* -- Natural Gas-- Drilling
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COMPRESSION
COMPRESSION RATIO
COMPRESSORS
COMPUTERIZED SIMULATION
CYLINDERS
DYNAMIC LOADS
ENERGY SOURCES
ENGINES
FEDERAL REGION VI
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS COMPRESSORS
GAS FUELS
GASES
INDUSTRIAL PLANTS
NATURAL GAS
NATURAL GAS PROCESSING PLANTS
NORTH AMERICA
SIMULATION
TEXAS
USA