Evolution Characteristics of Energy Change Field in a Centrifugal Pump during Rapid Starting Period
Although the energy change field in the centrifugal pump has been investigated under quasi-steady conditions (QSC), equivalent information is not yet known during the rapid starting period (RSP). A centrifugal pump loop system is constructed to investigate the energy change field in the centrifugal...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/15/22/8433 |
| _version_ | 1797465452973129728 |
|---|---|
| author | Xiaoping Chen Xiaoming Zhang Xiaojun Li |
| author_facet | Xiaoping Chen Xiaoming Zhang Xiaojun Li |
| author_sort | Xiaoping Chen |
| collection | DOAJ |
| description | Although the energy change field in the centrifugal pump has been investigated under quasi-steady conditions (QSC), equivalent information is not yet known during the rapid starting period (RSP). A centrifugal pump loop system is constructed to investigate the energy change field in the centrifugal pump during RSP. The RSP is selected as a linear rotational speed from 0 rev/min to 2900 rev/min (design rotational speed) and a constant valve opening of 0.569. Results show that the flow rate lags behind the pump head value with the linear increase in rotational speed. The large values of partial derivations of mechanical energy in normal and tangential components are mainly concentrated at the impeller outlet, whose position is insensitive to rotational speed. The region of dominant energy loss is negatively correlated with rotational speed, and an opposite phenomenon is observed in the region of dominant energy increase. With the rotational speed increasing, the mean energy gradient function in the pump impeller and pump volute gradually increases, and the slope of the former is less than that of the latter. After reaching the design rotational speed, the energy change field gradually approaches that under quasi-steady conditions. |
| first_indexed | 2024-03-09T18:22:37Z |
| format | Article |
| id | doaj.art-8de1f5b5fc7341df9bc5075b566c9104 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T18:22:37Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-8de1f5b5fc7341df9bc5075b566c91042023-11-24T08:13:01ZengMDPI AGEnergies1996-10732022-11-011522843310.3390/en15228433Evolution Characteristics of Energy Change Field in a Centrifugal Pump during Rapid Starting PeriodXiaoping Chen0Xiaoming Zhang1Xiaojun Li2Key Laboratory of Fluid Transmission Technology of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaKey Laboratory of Fluid Transmission Technology of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaKey Laboratory of Fluid Transmission Technology of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaAlthough the energy change field in the centrifugal pump has been investigated under quasi-steady conditions (QSC), equivalent information is not yet known during the rapid starting period (RSP). A centrifugal pump loop system is constructed to investigate the energy change field in the centrifugal pump during RSP. The RSP is selected as a linear rotational speed from 0 rev/min to 2900 rev/min (design rotational speed) and a constant valve opening of 0.569. Results show that the flow rate lags behind the pump head value with the linear increase in rotational speed. The large values of partial derivations of mechanical energy in normal and tangential components are mainly concentrated at the impeller outlet, whose position is insensitive to rotational speed. The region of dominant energy loss is negatively correlated with rotational speed, and an opposite phenomenon is observed in the region of dominant energy increase. With the rotational speed increasing, the mean energy gradient function in the pump impeller and pump volute gradually increases, and the slope of the former is less than that of the latter. After reaching the design rotational speed, the energy change field gradually approaches that under quasi-steady conditions.https://www.mdpi.com/1996-1073/15/22/8433centrifugal pumprapid starting periodenergy change fieldquasi-steady conditionsrotational speed |
| spellingShingle | Xiaoping Chen Xiaoming Zhang Xiaojun Li Evolution Characteristics of Energy Change Field in a Centrifugal Pump during Rapid Starting Period Energies centrifugal pump rapid starting period energy change field quasi-steady conditions rotational speed |
| title | Evolution Characteristics of Energy Change Field in a Centrifugal Pump during Rapid Starting Period |
| title_full | Evolution Characteristics of Energy Change Field in a Centrifugal Pump during Rapid Starting Period |
| title_fullStr | Evolution Characteristics of Energy Change Field in a Centrifugal Pump during Rapid Starting Period |
| title_full_unstemmed | Evolution Characteristics of Energy Change Field in a Centrifugal Pump during Rapid Starting Period |
| title_short | Evolution Characteristics of Energy Change Field in a Centrifugal Pump during Rapid Starting Period |
| title_sort | evolution characteristics of energy change field in a centrifugal pump during rapid starting period |
| topic | centrifugal pump rapid starting period energy change field quasi-steady conditions rotational speed |
| url | https://www.mdpi.com/1996-1073/15/22/8433 |
| work_keys_str_mv | AT xiaopingchen evolutioncharacteristicsofenergychangefieldinacentrifugalpumpduringrapidstartingperiod AT xiaomingzhang evolutioncharacteristicsofenergychangefieldinacentrifugalpumpduringrapidstartingperiod AT xiaojunli evolutioncharacteristicsofenergychangefieldinacentrifugalpumpduringrapidstartingperiod |