Centrifugal Compressor Polytropic Performance—Improved Rapid Calculation Results—Cubic Polynomial Methods
This paper presents a new improved approach to calculation of polytropic performance of centrifugal compressors. This rapid solution technique is based upon a constant efficiency, temperature-entropy polytropic path represented by cubic polynomials. New thermodynamic path slope constraints have been...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | International Journal of Turbomachinery, Propulsion and Power |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-186X/6/2/15 |
| _version_ | 1797532218154811392 |
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| author | Matt Taher Fred Evans |
| author_facet | Matt Taher Fred Evans |
| author_sort | Matt Taher |
| collection | DOAJ |
| description | This paper presents a new improved approach to calculation of polytropic performance of centrifugal compressors. This rapid solution technique is based upon a constant efficiency, temperature-entropy polytropic path represented by cubic polynomials. New thermodynamic path slope constraints have been developed that yield highly accurate results while requiring fewer computing resources and reducing computing elapsed time. Applying this thermodynamically sound cubic polynomial model would improve accuracy and shorten compressor performance test duration at a vendor’s shop. A broad range of example case results verify the accuracy and ease of use of the method. The example cases confirm the cubic polynomial methods result in lower calculation uncertainty than other methods. |
| first_indexed | 2024-03-10T10:56:00Z |
| format | Article |
| id | doaj.art-d404d7794f0f4ba3aca44851750290ff |
| institution | Directory Open Access Journal |
| issn | 2504-186X |
| language | English |
| last_indexed | 2024-03-10T10:56:00Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Turbomachinery, Propulsion and Power |
| spelling | doaj.art-d404d7794f0f4ba3aca44851750290ff2023-11-21T21:53:47ZengMDPI AGInternational Journal of Turbomachinery, Propulsion and Power2504-186X2021-05-01621510.3390/ijtpp6020015Centrifugal Compressor Polytropic Performance—Improved Rapid Calculation Results—Cubic Polynomial MethodsMatt Taher0Fred Evans1Principal Engineer, LNG Technology Center, Bechtel Energy, Houston, TX 77056, USAIndependent Researcher, Canyon Lake, TX 78133, USAThis paper presents a new improved approach to calculation of polytropic performance of centrifugal compressors. This rapid solution technique is based upon a constant efficiency, temperature-entropy polytropic path represented by cubic polynomials. New thermodynamic path slope constraints have been developed that yield highly accurate results while requiring fewer computing resources and reducing computing elapsed time. Applying this thermodynamically sound cubic polynomial model would improve accuracy and shorten compressor performance test duration at a vendor’s shop. A broad range of example case results verify the accuracy and ease of use of the method. The example cases confirm the cubic polynomial methods result in lower calculation uncertainty than other methods.https://www.mdpi.com/2504-186X/6/2/15polytropic processcompressor performance testASME PTC-10piecewise cubic polynomial approximationreal gastemperature-entropy |
| spellingShingle | Matt Taher Fred Evans Centrifugal Compressor Polytropic Performance—Improved Rapid Calculation Results—Cubic Polynomial Methods International Journal of Turbomachinery, Propulsion and Power polytropic process compressor performance test ASME PTC-10 piecewise cubic polynomial approximation real gas temperature-entropy |
| title | Centrifugal Compressor Polytropic Performance—Improved Rapid Calculation Results—Cubic Polynomial Methods |
| title_full | Centrifugal Compressor Polytropic Performance—Improved Rapid Calculation Results—Cubic Polynomial Methods |
| title_fullStr | Centrifugal Compressor Polytropic Performance—Improved Rapid Calculation Results—Cubic Polynomial Methods |
| title_full_unstemmed | Centrifugal Compressor Polytropic Performance—Improved Rapid Calculation Results—Cubic Polynomial Methods |
| title_short | Centrifugal Compressor Polytropic Performance—Improved Rapid Calculation Results—Cubic Polynomial Methods |
| title_sort | centrifugal compressor polytropic performance improved rapid calculation results cubic polynomial methods |
| topic | polytropic process compressor performance test ASME PTC-10 piecewise cubic polynomial approximation real gas temperature-entropy |
| url | https://www.mdpi.com/2504-186X/6/2/15 |
| work_keys_str_mv | AT matttaher centrifugalcompressorpolytropicperformanceimprovedrapidcalculationresultscubicpolynomialmethods AT fredevans centrifugalcompressorpolytropicperformanceimprovedrapidcalculationresultscubicpolynomialmethods |