The bladeless Water Turbine SETUR

This Micro Water Turbine is capable of utilizing very small sources of water and it is highly suitable for closed circuit production of electrical energy. This turbine is very effective in areas of low available water energy so far untapped by any other means. Its strengths are in reliability, considerable long term financial savings, improving living standards, while utilizing renewable energy resources, and most of all it is Environmentally Friendly Device. 

SETUR is protected by patent in many advanced countries

DVE-120 (Mikro-Turbine Setur: Currently this turbine is being manufactured for the use in relatively small water ways) is an environmentally friendly self-contained electricity generating unit. This generating unit is powered by the patented bladeless rolling turbine which is attached to a concrete block containing the inlet plumbing. The attached generator produces output of either 12 or 24 Volt AC. The produced electricity can be used directly and/or stored in batteries.

Operating parameters of the Micro Water Turbine DVE 120(i) – 120(b) are: Q = 5 – 15 litre/sec, H = 1,5 – 15 m, P(mech) = 35 W – 1500W

Also, the Turbine SETUR can be effectively used where water level differences are extremely low. Specifications (currently under research and testing): Q = 30 – 600 litres/sec, H = 0.3 – 1.5 m.

The first conception of rolling turbines used a rotor hanging in the entry part of a outlet nozzle. Water discharge usually moved in units or in tens of litres per second. Axial strength acting on a rotor in the direction towards a outlet nozzle, brought about by the height of the used gradient was retained in different types of suspended devices and joints, which enabled both rotation of the shaft and rotor in their longitudinal direction and the rolling of the rotor inside the outlet nozzle. The best-known image of these types were so called boiler turbines, which mostly worked with through-flows 10 – 50 l/s on gradients from 0,4 to 1,9 metres. An example of the described type of rolling liquid machine is in Figure 1.

Figure 1 A boiler type of turbine with a hanging rotor These rolling liquid machines however did not provide sufficient possibilities for perfecting and further development for gradients above 1 meter, which is why there was a need to make progress to their innovation. Micro-outflows within an interval 5 -15 litres on gradients of 3-15 metres became the basis not only of constructional changes but also the philosophy behind the purpose of rolling turbines. The conception of an innovative machine came from the original patent solution, but focused on the optimization of rolling rotors with a diameter from 120 to 160 mm. Development and subsequent long-term tests showed that efficient performance for the consumer can already be gained with the help of rolling turbines from extraordinarily small discharges, for example about 5 - 6 litres of water on a gradient smaller than 5 meters. An example of such a innovative rolling micro-turbine is in Figure 2 and Table 1 shows the actual measured-off value for a gradient 3,6 m. From the given results we can calculate (with a presumption of the efficiency of a synchronous generator of electrical energy with permanent magnets of about 50%) the mechanical efficiency of a turbine to a level about 53 – 55%, if during the calculation we leave something to account for losses that originated in the inlet pipe.

Figure 2 A innovative rolling micro-turbine

In Figure 2 individual marks represent: D – outlet nozzle (stator of turbine – nozzle), R – hollow rotor, H – shaft of a rotor, Z – shoulder of a shaft, P – bearing, V – space in which there appears the realization of the rolling phenomenon, POD, POR – points of contact of the rotor with the outlet nozzle, L – shaft length , α – angle of the wall of the outlet nozzle, K – direction from which there starts the reduction of the space between rotor and outlet nozzle, A – place for withdrawing of torque (the shaft rotates and at the same time performs a precession movement). Liquid enters into the turbine against the rotor that is in the direction of the big blue arrow and flows out through the orifices in the front wall of the outlet nozzle in the direction of the small blue.

Table 1číslo měření Uz (V) Iz (A) Pz (W) * Ug (V) fg (Hz) ng nt Q (l/s) Pz (W)**

1 38,6 0,00 0,00 28,9 70,5 423 159 5,00 0,00

2 34,8 0,45 22,26 27,0 68,0 408 153 5,10 15,66

3 34,4 0,50 23,80 26,8 67,5 405 152 5,20 17,20

4 34,0 0,55 25,30 26,5 67,5 405 152 5,20 18,70

5 33,7 0,60 26,82 26,3 67,0 402 151 5,20 20,22

6 33,4 0,65 28,31 26,0 66,5 399 150 5,30 21,71

7 33,1 0,70 29,77 26,0 66,5 399 150 5,30 23,17

8 32,7 0,75 31,13 25,7 66,0 396 149 5,40 24,53

9 32,5 0,80 32,60 25,4 66,0 396 149 5,40 26,00

10 32,1 0,85 33,89 25,3 65,5 393 148 5,45 27,29

11 31,9 0,90 35,31 25,0 65,5 393 148 5,45 28,71

12 31,4 0,95 36,43 24,8 65,5 393 148 5,45 29,83

13 31,1 1,00 37,70 24,6 65,0 390 147 5,45 31,10

14 30,6 1,10 40,26 24,2 64,5 387 145 5,50 33,66

15 30,0 1,20 42,60 23,8 64,0 384 144 5,50 36,00

16 29,3 1,30 44,69 23,2 63,5 381 143 5,55 38,09

17 28,7 1,40 46,78 22,8 63,0 378 142 5,55 40,18

18 28,0 1,50 48,60 22,3 62,5 375 141 5,55 42,00

19 27,4 1,60 50,44 22,0 62,0 372 140 5,60 43,84

20 26,7 1,70 51,99 21,5 61,5 369 139 5,60 45,39

21 26,2 1,80 53,76 21,2 61,0 366 138 5,65 47,16

22 25,5 1,90 55,05 20,6 60,0 360 135 5,70 48,45

23 24,8 2,01 56,45 20,1 59,0 354 133 5,80 49,85

24 24,0 2,12 57,48 19,3 58,5 351 132 5,80 50,88

25 23,0 2,21 57,43 18,6 57,5 345 130 6,00 50,83

26 21,7 2,41 58,90 17,3 55,5 333 125 6,20 52,30

27 21,3 2,43 58,36 17,3 55,5 333 125 6,20 51,76

28 20,9 2,51 59,06 16,9 54,5 327 123 6,20 52,46

29 20,7 2,52 58,76 16,7 54,5 327 123 6,50 52,16

30 20,4 2,51 57,80 16,7 54 324 122 6,80 51,20

31 20,2 2,55 58,11 16,5 53,5 321 121 6,60 51,51

32 19,6 2,63 58,15 16,0 52,5 315 118 7,60 51,55

33 18,4 2,75 57,20 15,2 51,0 306 115 8,00 50,60

34 16,7 2,95 55,87 13,9 48,5 291 109 8,2 49,27

35 14,7 3,11 52,32 12,3 44,5 267 100 8,3 45,72