Page - 1370 - in Book of Full Papers - Symposium Hydro Engineering

4. FIELD OF EFFICIENT USE In low head hydro electric power plants the useable energy height (head) ratios are highly dependent on the runoff conditions within the body of water. As a rule, the design of the turbine is geared towards the average water flow, in order to ensure optimum operational efficiency of the plant over the longest possible time span. Fig. 8 The hydraulic performance is based on flow duration The scope of ejector efficiency is limited by full load conditions, where surplus water is present. 1370