Kaplan turbine

In Europe, the first internal cathodic protection installation was put into operation in 1965 for 24 water-powered Kaplan turbines with a propeller diameter of 7.6 m. These were in the tidal power station at La Ranee in France. The protected object consisted of plain carbon and high-alloy stainless steels. Each turbine was... 

In 1987 at the Weira River, four Kaplan turbines of 2.65 m diameter in two power stations were cathodically protected. The turbines were of mixed construction with high-alloy CrNi steels and nonalloyed ferrous materials with tar-EP coating. Considerable corrosion damage occurred prior to the introduction of cathodic protection, which was attributed to bimetallic corrosion and the river s high salt content of c(CT) = 0.4 to 20 g L... 

Fig. 21-3 Diagram of the protected Kaplan turbine with position of anodes (A1 to A14) and reference electrodes (El to E5).

Table 21-1 Structure/electrolyte potentials in a Kaplan turbine as in Fig. 21-3 before and after sivitching on the cathodic protection system.

Figure 18. Different types of bioreactors for plant cells, tissues and organs. (A) Shake Flask. (B) Aeration-Agitation. (C) Percolated Impeller. (D) Draught Tube Air-lift. (E) Draft Tube with Kaplan Turbine. -Air-liftloop. (Gj Rotating Drum. (7/1 Light Emitting Draught Tube. (I) Spin Filter. (J) Bubble Column. (K) Aeration. (L) Gaseous Phase.

Figure 19. Comparison of yield and productivity for cell mass and anthraquinones in various bioreactor systems, Shake Flask. Flat Blade Turbine. (3 Perfolated Disk Impeller. (4) Draft Tube Bioreactor with Kaplan Turbine. (5) Air-lift Bioreactor.

Kaplan Turbine - A type of turbine that that has two blades whose pitch is adjustable. The turbine may have gates to control the angle of the fluid flow into the blades. 

Heslop, P.L., Jessop, G.A. (1939). Kaplan turbines at Bonneville. Trans. ASME 61(2) 97-108. Jessop, G.A. (1925). High specific speed hydrauHc turbines in their bearing on the proportioning of the number of units in low-head hydro-electric plants. Trans. ASCE 89 659-665. Liel, A.B., Billington, D.P. (2008). Engineering innovation at Bonneville Dam. Technology and Culture 49(3) 727-751. 

A Francis Turbine or Kaplan Turbine is also an axial turbine but the pitch of the blades can be varied according to the load and discharge rate of the water. 

Figure 7.2. Types of water power turbines (a) Pelton water wheel, (b) Franeis turbine, and (c) Kaplan turbine.

It is desired to estimate the power developed in a large Kaplan turbine that will have a rotor diameter of 20 ft by building a 1 20 scale model and operating it under conditions of dimensional similitude, such that the measured power for the model may be used to predict the horsepower of the turbine. The prototype, of course, will operate with water, and the model will also be tested with water. 

Austrian inventor Victor Kaplan patents his turbine the invention enables hydroelectric power stations to be more consistently efficient. 

Water Turbine - A turbine that uses water pressure to rotate its blades the primary types are the Pelton wheel, for high heads (pressure) the Francis turbine, for low to medium heads and the Kaplan for a wide range of heads. Primarily used to power an electric generator. 

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