Influence of Seasonal Ambient Temperature and Humidity Variations on Compressor Performance Predictions

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Original languageEnglish
Pages (from-to)10-17
Number of pages8
JournalInternational Journal of Gas Turbine, Propulsion and Power Systems
Volume15
Issue number6
Publication statusPublished - Nov 2024

Abstract

Seasonal variations of the ambient conditions affect the performance of turbomachines. Compressors are particularly sensitive to these variations, which must be considered in order to obtain representative performance predictions. This paper investigates how variations in the inlet total temperature and inlet air humidity due to seasonal changes propagate and how this affects the performance predictions for the 4 1/2-stage high-speed axial compressor test rig of the Institute of Turbomachinery and Fluid Dynamics at Leibniz University Hannover. Sensitivities of the performance parameters to variations in the ambient conditions for different operating points are derived on the basis of this study. The results show that an increase in the inlet total temperature reduces the corrected mass-flow rate, the total-temperature ratio, the total-pressure ratio, and the isentropic efficiency. In contrast, an increase in the air humidity leads to higher corrected mass-flow rates and isentropic efficiencies. The total-pressure and total-temperature ratios are reduced by a higher inlet air humidity. This paper shows that the propagation of the inlet total temperature and inlet air humidity variations depends on the operating point of the compressor.

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Influence of Seasonal Ambient Temperature and Humidity Variations on Compressor Performance Predictions. / Stöwer, Marcel; Mimic, Dajan.
In: International Journal of Gas Turbine, Propulsion and Power Systems, Vol. 15, No. 6, 11.2024, p. 10-17.

Research output: Contribution to journalArticleResearchpeer review

Stöwer, M & Mimic, D 2024, 'Influence of Seasonal Ambient Temperature and Humidity Variations on Compressor Performance Predictions', International Journal of Gas Turbine, Propulsion and Power Systems, vol. 15, no. 6, pp. 10-17. https://doi.org/10.38036/jgpp.15.6_v15n6tp02
Stöwer M, Mimic D. Influence of Seasonal Ambient Temperature and Humidity Variations on Compressor Performance Predictions. International Journal of Gas Turbine, Propulsion and Power Systems. 2024 Nov;15(6):10-17. doi: 10.38036/jgpp.15.6_v15n6tp02
Stöwer, Marcel ; Mimic, Dajan. / Influence of Seasonal Ambient Temperature and Humidity Variations on Compressor Performance Predictions. In: International Journal of Gas Turbine, Propulsion and Power Systems. 2024 ; Vol. 15, No. 6. pp. 10-17.
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abstract = "Seasonal variations of the ambient conditions affect the performance of turbomachines. Compressors are particularly sensitive to these variations, which must be considered in order to obtain representative performance predictions. This paper investigates how variations in the inlet total temperature and inlet air humidity due to seasonal changes propagate and how this affects the performance predictions for the 4 1/2-stage high-speed axial compressor test rig of the Institute of Turbomachinery and Fluid Dynamics at Leibniz University Hannover. Sensitivities of the performance parameters to variations in the ambient conditions for different operating points are derived on the basis of this study. The results show that an increase in the inlet total temperature reduces the corrected mass-flow rate, the total-temperature ratio, the total-pressure ratio, and the isentropic efficiency. In contrast, an increase in the air humidity leads to higher corrected mass-flow rates and isentropic efficiencies. The total-pressure and total-temperature ratios are reduced by a higher inlet air humidity. This paper shows that the propagation of the inlet total temperature and inlet air humidity variations depends on the operating point of the compressor.",
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Download

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AU - Mimic, Dajan

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