Improving Turbine Efficiency Calculations through Advanced Velocity Measurements

摘要

New technologies for collecting and processing velocity data make it possible to obtain a detailed estimate of the velocity head correction factor. This factor traditionally has been either approximated or ignored in turbine efficiency measurements. Results of hydraulic laboratory tests suggest these technologies offer potential for significant improvement of the testing protocol for any reaction turbine, but especially for low-head turbines with non-uniform exit velocities.