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• W4236996543 abstract "Operating Curves for Single and Multistage Reciprocating Compressor David P. Sparta; David P. Sparta Northern Natural Gas Co. Search for other works by this author on: This Site Google Scholar Ronald H. Kuss Ronald H. Kuss Northern Natural Gas Co. Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Natural Gas Technology Symposium, Omaha, Nebraska, May 1972. Paper Number: SPE-3864-MS https://doi.org/10.2118/3864-MS Published: May 18 1972 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Sparta, David P., and Ronald H. Kuss. Operating Curves for Single and Multistage Reciprocating Compressor. Paper presented at the SPE Natural Gas Technology Symposium, Omaha, Nebraska, May 1972. doi: https://doi.org/10.2118/3864-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Unconventional Resources Conference / Gas Technology Symposium Search Advanced Search This paper was prepared for the Northern Plains Section Regional Meeting of the Society of Petroleum Engineers of AIME, to be held in Omaha, Neb., May 18–19, 1972. Permission to copy is restricted to an abstract of not more than 300 words. Illustrations may not be copied. The abstract should contain conspicuous acknowledgment of where and by whom the paper is presented. Publication elsewhere after publication in the JOURNAL OF PETROLEUM TECHNOLOGY or the SOCIETY OF PETROLEUM ENGINEERS JOURNAL is usually granted upon request to the Editor of the appropriate journal provided agreement to give proper credit is made.Discussion of this paper is invited. Three copies of any discussion should be sent to the Society of Petroleum Engineers Office. Such discussions may be presented at the above meeting and, with the paper, may be considered for publication in one of the two SPE magazines.AbstractThis paper discusses a computer program that develops operating curves for single and multi-stage reciprocating compressors. The operating curves, which show horsepower requirements as a function of pressure, are used as an aid in operating compressors.The series-parallel flow of the gas in a staged unit sets up interrelationships between the stages and also between the cylinders of each stage. At constant horsepower, small suction pressure changes cause large changes in the discharge pressure. The interrelationships and the suction pressure sensitivity cause convergence problems in modeling staged compressors. The convergence problem becomes more pronounced as the number of stages increases.The first part of the paper discusses a technique that solves the convergence problems in modeling staged units. The technique is discussed along with the results of a computer program written to test the modeling techniques. program written to test the modeling techniques. The second part of the paper discusses how this test model is built into a production computer program that develops and plots operating curves. This program automatically produces the curves using the compressor's data (bore, stroke, clearance, etc.)TEXTNorthern Natural Gas Co. uses operating curves as an aid in operating reciprocating compressors. These curves show horsepower and volume as a function of suction and discharge pressure for a given cylinder clearance; a pressure for a given cylinder clearance; a separate plot is used each clearance configuration. Figs. 1 and 2 show typical curves for single and multistage compressors. The operating curves are generated by a compressor model.There are convergence problems in modeling staged compressors. Fig. 3 is a schematic of a typical staged unit. The series-parallel flow of the gas sets up interrelationships between the stages and also between the cylinders of each stage. The flow distribution, for example, to a stage's cylinders may change with pressure because of different clearances. As noted in Fig. 2, small suction pressure changes at constant horsepower cause large changes in the discharge pressure. The interrelationships and pressure sensitivity cause convergence problems pressure sensitivity cause convergence problems in modeling staged compressors.A modeling technique was developed and tested that solves the convergence problem. An ideal compressor handling an ideal gas is assumed in describing this model. The actual test model used modified equations that compensate for real compressor and gas behavior, such as compressibility, valve leakage, etc. Keywords: compressors engines and turbines, clearance, cylinder, cylindersper stage, compressor, test model, calculatedfor, dischargepressure, SuctionPressure, repeatedfor Subjects: Processing Systems and Design, Compressors, engines and turbines This content is only available via PDF. 1972. Society of Petroleum Engineers You can access this article if you purchase or spend a download." @default.
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• W4236996543 title "Operating Curves for Single and Multistage Reciprocating Compressor " @default.
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