The effect of guide vane type on performance of multistage energy recovery hydraulic turbine (MERHT)
In this work, we theoretically analyzed the main factors affecting performance of multistage energy recovery hydraulic turbine (MERHT), and found that the arc radius (r) of the edge at the outlet section of the runner guide vane is the determining factor of the hydraulic efficiency of hydraulic turb...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2020-07-01
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| Series: | Open Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/phys-2020-0141 |
| _version_ | 1818689433855066112 |
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| author | Tian Yabin Hu Anjie Zheng Qi |
| author_facet | Tian Yabin Hu Anjie Zheng Qi |
| author_sort | Tian Yabin |
| collection | DOAJ |
| description | In this work, we theoretically analyzed the main factors affecting performance of multistage energy recovery hydraulic turbine (MERHT), and found that the arc radius (r) of the edge at the outlet section of the runner guide vane is the determining factor of the hydraulic efficiency of hydraulic turbines. To further improve the performance of the MERHT, a numerical model is then proposed to optimize the arc radius. The MERHT-type DCSGT250-175 × 9 was taken in the simulation. The hydraulic efficiency η
h and the corresponding distributions of pressure and velocity were numerically studied with four different values of r ranging from 133.5 to 138 mm. It is found that the flow state and the flow field distribution were the best when r equals to 134 mm. With the optimum r, the external diameter of the runner guide vane (D) was further adjusted, which can lead to 3.9% increase of average efficiency according to the simulation results. |
| first_indexed | 2024-12-17T12:10:02Z |
| format | Article |
| id | doaj.art-19cb224c27e04d52abd03dba431e21a1 |
| institution | Directory Open Access Journal |
| issn | 2391-5471 |
| language | English |
| last_indexed | 2024-12-17T12:10:02Z |
| publishDate | 2020-07-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Physics |
| spelling | doaj.art-19cb224c27e04d52abd03dba431e21a12022-12-21T21:49:26ZengDe GruyterOpen Physics2391-54712020-07-0118135236410.1515/phys-2020-0141phys-2020-0141The effect of guide vane type on performance of multistage energy recovery hydraulic turbine (MERHT)Tian Yabin0Hu Anjie1Zheng Qi2Department of Building Environment and Energy Application Engineering, School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, ChinaDepartment of Building Environment and Energy Application Engineering, School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, ChinaEngineering Department, Marmon Foodservice Technologies, Tianjin 300457, ChinaIn this work, we theoretically analyzed the main factors affecting performance of multistage energy recovery hydraulic turbine (MERHT), and found that the arc radius (r) of the edge at the outlet section of the runner guide vane is the determining factor of the hydraulic efficiency of hydraulic turbines. To further improve the performance of the MERHT, a numerical model is then proposed to optimize the arc radius. The MERHT-type DCSGT250-175 × 9 was taken in the simulation. The hydraulic efficiency η h and the corresponding distributions of pressure and velocity were numerically studied with four different values of r ranging from 133.5 to 138 mm. It is found that the flow state and the flow field distribution were the best when r equals to 134 mm. With the optimum r, the external diameter of the runner guide vane (D) was further adjusted, which can lead to 3.9% increase of average efficiency according to the simulation results.https://doi.org/10.1515/phys-2020-0141hydraulic turbineguide vaneperformanceenergy recovery |
| spellingShingle | Tian Yabin Hu Anjie Zheng Qi The effect of guide vane type on performance of multistage energy recovery hydraulic turbine (MERHT) Open Physics hydraulic turbine guide vane performance energy recovery |
| title | The effect of guide vane type on performance of multistage energy recovery hydraulic turbine (MERHT) |
| title_full | The effect of guide vane type on performance of multistage energy recovery hydraulic turbine (MERHT) |
| title_fullStr | The effect of guide vane type on performance of multistage energy recovery hydraulic turbine (MERHT) |
| title_full_unstemmed | The effect of guide vane type on performance of multistage energy recovery hydraulic turbine (MERHT) |
| title_short | The effect of guide vane type on performance of multistage energy recovery hydraulic turbine (MERHT) |
| title_sort | effect of guide vane type on performance of multistage energy recovery hydraulic turbine merht |
| topic | hydraulic turbine guide vane performance energy recovery |
| url | https://doi.org/10.1515/phys-2020-0141 |
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