Investigation of the Flow-Induced Noise and Optimization Design of a Short Tube Throttle Valve
Compared with the globe valves and other on-off valves, cavitation and noise are more severe in the throttle control valve of the refrigerating system due to the higher saturated vapor pressure of the refrigerant. A short tube throttle valve (STTV) is an important throttle control component and cavi...
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2024-01-01
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| Series: | Journal of Applied Fluid Mechanics |
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| Online Access: | https://www.jafmonline.net/article_2395_4a5a3d3124e2f40237d71225ab88a502.pdf |
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| author | K. P. Zhang D.-Z. Wu J. Y. Wang Y. X. Song Z. B. Feng Y. C. He L. H. Xuan |
| author_facet | K. P. Zhang D.-Z. Wu J. Y. Wang Y. X. Song Z. B. Feng Y. C. He L. H. Xuan |
| author_sort | K. P. Zhang |
| collection | DOAJ |
| description | Compared with the globe valves and other on-off valves, cavitation and noise are more severe in the throttle control valve of the refrigerating system due to the higher saturated vapor pressure of the refrigerant. A short tube throttle valve (STTV) is an important throttle control component and cavitation noise easily occurs because of the pressure drop caused by flow throttling. To suppress the cavitation noise, this paper proposed a numerical investigation verified by experimental data into cavitation and noise characteristics inside the STTV. Three kinds of typical throttle valve structures are proposed in this study. The flow field and cavitation noise of the STTV under different refrigerant flow rates were analyzed numerically. The noise levels of the prototype and three optimized structures are comparatively assessed and analyzed. The findings indicate that the level of cavitation noise rises with an increase in flow rate through the STTV. Specifically, when the flow rate transitions from 0.014 kg/s to 0.024 kg/s, there is a corresponding increase in noise levels, moving from 102.8 dB to 122.5 dB. There is less cavitation noise upstream and the flow is stable, while the noise is mainly concentrated downstream with symmetrical distribution characteristics. The distribution seems to have small noise near the internal wall, while large noise is in the center of the downstream in the STTV, and the maximum noise is observed at the corner of the valve seat of the valve outlet. The optimized valve featuring a slope structure on the valve seat significantly reduces cavitation noise, with a maximum noise reduction of 24.94 dB compared to the prototype valve. |
| first_indexed | 2024-03-08T09:25:54Z |
| format | Article |
| id | doaj.art-51f4cff44a2f41baab227a07cb710bf3 |
| institution | Directory Open Access Journal |
| issn | 1735-3572 1735-3645 |
| language | English |
| last_indexed | 2024-03-08T09:25:54Z |
| publishDate | 2024-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-51f4cff44a2f41baab227a07cb710bf32024-01-31T09:46:43ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35721735-36452024-01-0117491292510.47176/jafm.17.4.20182395Investigation of the Flow-Induced Noise and Optimization Design of a Short Tube Throttle ValveK. P. Zhang0D.-Z. Wu1J. Y. Wang2Y. X. Song3Z. B. Feng4Y. C. He5L. H. Xuan6Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou 310027, ChinaInstitute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, ChinaSchool of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, ChinaZhejiang DunAn Artificial Environmental Equipment Co., Ltd., Zhuji 311835, ChinaZhejiang DunAn Artificial Environmental Equipment Co., Ltd., Zhuji 311835, ChinaZhejiang DunAn Artificial Environmental Equipment Co., Ltd., Zhuji 311835, ChinaCompared with the globe valves and other on-off valves, cavitation and noise are more severe in the throttle control valve of the refrigerating system due to the higher saturated vapor pressure of the refrigerant. A short tube throttle valve (STTV) is an important throttle control component and cavitation noise easily occurs because of the pressure drop caused by flow throttling. To suppress the cavitation noise, this paper proposed a numerical investigation verified by experimental data into cavitation and noise characteristics inside the STTV. Three kinds of typical throttle valve structures are proposed in this study. The flow field and cavitation noise of the STTV under different refrigerant flow rates were analyzed numerically. The noise levels of the prototype and three optimized structures are comparatively assessed and analyzed. The findings indicate that the level of cavitation noise rises with an increase in flow rate through the STTV. Specifically, when the flow rate transitions from 0.014 kg/s to 0.024 kg/s, there is a corresponding increase in noise levels, moving from 102.8 dB to 122.5 dB. There is less cavitation noise upstream and the flow is stable, while the noise is mainly concentrated downstream with symmetrical distribution characteristics. The distribution seems to have small noise near the internal wall, while large noise is in the center of the downstream in the STTV, and the maximum noise is observed at the corner of the valve seat of the valve outlet. The optimized valve featuring a slope structure on the valve seat significantly reduces cavitation noise, with a maximum noise reduction of 24.94 dB compared to the prototype valve.https://www.jafmonline.net/article_2395_4a5a3d3124e2f40237d71225ab88a502.pdfshort tube throttle valvecavitationnoisephase changerefrigerating system |
| spellingShingle | K. P. Zhang D.-Z. Wu J. Y. Wang Y. X. Song Z. B. Feng Y. C. He L. H. Xuan Investigation of the Flow-Induced Noise and Optimization Design of a Short Tube Throttle Valve Journal of Applied Fluid Mechanics short tube throttle valve cavitation noise phase change refrigerating system |
| title | Investigation of the Flow-Induced Noise and Optimization Design of a Short Tube Throttle Valve |
| title_full | Investigation of the Flow-Induced Noise and Optimization Design of a Short Tube Throttle Valve |
| title_fullStr | Investigation of the Flow-Induced Noise and Optimization Design of a Short Tube Throttle Valve |
| title_full_unstemmed | Investigation of the Flow-Induced Noise and Optimization Design of a Short Tube Throttle Valve |
| title_short | Investigation of the Flow-Induced Noise and Optimization Design of a Short Tube Throttle Valve |
| title_sort | investigation of the flow induced noise and optimization design of a short tube throttle valve |
| topic | short tube throttle valve cavitation noise phase change refrigerating system |
| url | https://www.jafmonline.net/article_2395_4a5a3d3124e2f40237d71225ab88a502.pdf |
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