Table 4 Efficiency calculations at different flow rates and inclination angles.
From: Development of a sustainable portable Archimedes screw turbine for hydropower generation
Sr. no | Flow rate | Inclination angle | No. of revolution | Hydraulic power | Mechanical power | Hydraulic efficiency | Mechanical efficiency | Overall efficiency |
|---|---|---|---|---|---|---|---|---|
(ft3/s) | (Degree) | RPM | (Watt) | (Watt) | (%) | (%) | ||
1 | 0.3 | 22 | 58 | 25 | 15.5 | 62.16 | 0.92 | 57.19 |
2 | 0.3 | 30 | 70 | 33.4 | 21.3 | 63.61 | 0.92 | 58.53 |
3 | 0.3 | 45 | 77 | 46.7 | 22.2 | 48.32 | 0.92 | 44.46 |
4 | 0.3 | 55 | 79 | 54.2 | 22.8 | 42.87 | 0.92 | 39.44 |
5 | 0.4 | 22 | 71 | 33.3 | 21.6 | 64.72 | 0.92 | 59.54 |
6 | 0.4 | 30 | 86 | 44.3 | 30 | 67.66 | 0.92 | 62.25 |
7 | 0.4 | 45 | 92 | 62.1 | 30.8 | 49.62 | 0.92 | 45.65 |
8 | 0.4 | 55 | 95 | 72.1 | 32.1 | 44.55 | 0.92 | 40.98 |
9 | 0.5 | 22 | 78 | 41.8 | 28.2 | 67.38 | 0.92 | 62 |
10 | 0.5 | 30 | 104 | 55.7 | 42 | 75.55 | 0.92 | 70 |
11 | 0.5 | 45 | 108 | 78 | 44.5 | 57.1 | 0.92 | 52.53 |
12 | 0.5 | 55 | 111 | 90.5 | 48.2 | 53.22 | 0.92 | 48.97 |
13 | 0.6 | 22 | 82 | 50 | 30.4 | 59.91 | 0.92 | 55.11 |
14 | 0.6 | 30 | 107 | 66.7 | 42 | 64.14 | 0.92 | 59.01 |
15 | 0.6 | 45 | 110 | 93.4 | 46.2 | 47.34 | 0.92 | 43.55 |
16 | 0.6 | 55 | 113 | 108.4 | 47.8 | 42.66 | 0.92 | 39.25 |
17 | 0.7 | 22 | 87 | 58.3 | 38.1 | 54.82 | 0.92 | 50.44 |
18 | 0.7 | 30 | 114 | 77.7 | 46.3 | 59.58 | 0.92 | 54.82 |
19 | 0.7 | 45 | 122 | 108.8 | 50.1 | 46.01 | 0.92 | 42.33 |
20 | 0.7 | 55 | 135 | 126.3 | 55.7 | 44.08 | 0.92 | 40.55 |
