A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine
| Autor: | Ivan Božić |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
geography
geography.geographical_feature_category 060102 archaeology Renewable Energy Sustainability and the Environment business.industry 020209 energy Flow (psychology) Process (computing) 06 humanities and the arts 02 engineering and technology Inlet Draft tube Range (aeronautics) 0202 electrical engineering electronic engineering information engineering Environmental science 0601 history and archaeology Performance improvement business Hydropower Marine engineering Kaplan turbine |
| Zdroj: | Renewable Energy. 175:550-558 |
| ISSN: | 0960-1481 |
| Popis: | Energy losses in the region between the runner and outlet section of a conventional hydraulic turbine have been the subject of investigation for a long time. In this paper as well, elbow draft tube losses are determined for the relevant wide range on-cam operating modes of the Kaplan turbine using a contemporary approach. The research considers the impact of swirl flow parameters, defined for the referent inlet of the draft tube, on the hydraulic losses. According to the methodology and obtained numerical results, a new formula for the calculation of draft tube losses is proposed. In the process of a hydropower plant refurbishment, the presented approach may enable more efficient and economically justified consideration of the performance improvement of the entire double regulated hydraulic turbine, especially in the case of keeping the existing elbow draft tube. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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