The following refer to a stage of a Parson's reaction turbine: Mean diameter of the blade ring: 92 cm Blade speed: 3000 грm Inlet absolute velocity of steam: 310 m/s Blade outlet angle: 20° Steam flow rate: 6.9 kg/s Determine the following: (1) blade inlet angle, (2) tangential force, and (3) power developed.

A turbine model has the following characteristics: Effective power: 13, 6 kW; Rotor Diameter: 0.38 meters, Flow: 0.34 ms, Energy Jump: 26.5 J / Kg and 3 R.P.S. rotation It is desired to construct a geometrically similar 1.20 meter diameter turbine that provides a power on the 656 kW axis, we ask: to calculate and justify its answers: a) the specific rotation; b) the unit quantities (rotation, flow and power); c) the rotation, flow and power of the model (bi-unit quantities).

Consider two identical wind turbines with a hub height of 40 m, one located in flat agricultural land and one located above a forest. What is the relative output power for the two turbines if the wind velocity is 10 m/s at a height of 100 m in both cases? Pagricultural/Pforest = ?

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