# Evaluating energy-efficiency improvement of variable-speed operation with the help of entropy: A case study of low-head Francis turbine

> Research article (Sustainable Energy Technologies and Assessments, 2022) · cited 20× · AI/ML

**Wikidata**: [openalex:W4283780817](https://www.wikidata.org/wiki/openalex:W4283780817)  
**Source**: https://4ort.xyz/entity/evaluating-energy-efficiency-improvement-of-variable-speed-operation-with-the-help-of-entropy-a-case-study-of-low-head-f