Abstract
In this paper formulae are developed for the rapid estimation of the hydroelectric powerhouse concrete volume for nine different types of surface powerhouses, containing high head vertical or horizontal shaft impulse units; high head Francis units intermediate head Francis, Kaplan, or fixed blade propellor units; low head horizontal shaft tube, rim generator, or bulb units; and low head vertical shaft Kaplan or fixed blade propellor units. Heads range from a minimum of 4.65 m up to a maximum of 825 m. Unit size ranges from a minimum of 3000 kVA to a maximum of 615 000 kVA. The formulae are based on statistics derived from 93 hydro developments. In addition formulae are developed for generator casing diameters as a prerequisite to the development of a chart which indicates whether the turbine or the generator will influence powerhouse concrete volume for intermediate head powerplants. Finally, the formulae are used to compare concrete volumes for horizontal and vertical shaft low head powerplants. Keywords: hydroelectric powerhouse, concrete volume.
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