Performance data for a very small (D = 8.25 cm) model water turbine, operating with an available head of 49 ft, are as follows:
(a) What type of turbine is this likely to be?
(b) What is so different about this data compared to the dimensionless performance plot in Fig. 11.21d? Suppose it is desired to use a geometrically similar turbine to serve where the available head and flow are 150 ft and 6.7 ft3/s, respectively. Estimate the most efficient
(c) Turbine diameter;
(d) Rotation speed; and
(e) Horsepower.

Transcribed Image Text:

Q.mh 8.7 18.7 18.5 18.3 7.6 6.7 15.1 .5 pm: n: 0 500 1000 1500 2000 2500 3000 3500 14% 27% 38% 50% 65% 61% 11%