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Table 4 Calibration of isentropic turbine efficiency based on minimum deviation between modelled values (M) and measured data (D) for 17 operating points

From: Making use of geothermal brine in Indonesia: binary demonstration power plant Lahendong/Pangolombian

  T HW,i
(°C)
\(\dot{V}\) HW
(m3/h)
T CW,i
(°C)
\(\dot{V}\) CW
(m3/h)
ΔTSH (K) η is,T
(−)
Pel,G (kW) \(\dot{V}\)WF (l/s) TRec,o,l (°C) TCW,o (°C) TCd (°C) pev (bar) Tev,o (°C) THW,o (°C)
M D M D M D M D M D M D M D M D
1 140.0 135.6 41.0 214.3 2.6 0.656 242.0 242.1 11.1 11.4 68.6 67.9 51.1 50.9 53.1 53.1 9.4 9.5 124.3 124.8 121.8 121.4
2 140.3 135.8 39.1 212.5 2.7 0.671 256.3 256.1 11.1 11.2 67.2 66.2 49.4 49.3 51.4 51.4 9.4 9.5 124.6 125.2 121.9 121.5
3 139.9 135.7 37.0 208.8 3.2 0.672 260.8 260.7 10.9 11.3 65.7 64.4 47.4 47.0 49.4 49.3 9.3 9.4 124.6 125.1 121.5 121.1
4 140.2 135.7 35.0 209.5 3.5 0.679 272.8 272.7 10.9 11.0 64.3 63.1 45.5 45.1 47.5 47.4 9.3 9.4 125.0 125.5 121.6 121.2
5 140.0 135.7 33.1 210.0 3.8 0.674 276.2 276.0 10.8 10.7 62.9 61.4 43.5 42.8 45.6 45.1 9.3 9.3 125.0 125.2 121.4 121.2
6 140.2 135.4 31.0 203.2 3.5 0.663 280.4 280.4 10.8 10.7 61.7 59.4 41.9 40.7 44.0 43.2 9.3 9.3 124.9 124.7 121.3 121.0
7 150.4 135.3 31.0 227.8 9.5 0.668 330.2 330.3 11.9 11.7 65.9 64.8 41.9 41.2 44.5 43.9 10.3 10.2 136.0 135.3 129.1 129.2
8 150.3 135.1 33.0 231.0 10.3 0.689 328.0 327.9 11.7 11.7 67.1 66.6 43.5 42.9 46.1 45.6 10.2 10.2 136.3 136.5 129.3 129.3
9 150.1 135.1 35.0 237.0 5.8 0.670 327.4 327.5 12.5 12.0 67.7 66.5 45.7 45.1 48.4 47.7 10.7 10.4 134.1 132.9 128.4 128.8
10 150.1 135.1 37.0 240.6 5.3 0.687 329.3 329.1 12.6 12.4 68.7 67.8 47.5 46.7 50.2 49.6 10.7 10.7 133.8 133.6 128.4 128.6
11 150.2 135.1 38.9 244.9 4.5 0.697 328.9 328.8 12.7 12.7 69.7 69.2 49.3 48.7 52.0 51.6 10.8 10.8 133.5 133.7 128.5 128.5
12 150.0 134.9 41.0 246.3 4.5 0.692 316.1 316.2 12.8 12.8 71.2 71.0 51.2 50.9 53.9 53.6 10.8 10.8 133.3 133.6 128.5 128.6
13 160.3 133.6 35.0 248.2 16.0 0.702 364.3 364.4 12.5 12.6 72.2 72.7 45.5 45.1 48.5 48.2 11.0 11.0 145.8 146.1 137.3 137.2
14 160.5 133.8 37.0 255.7 15.6 0.700 359.4 359.2 12.7 12.6 73.5 74.4 47.3 47.2 50.3 50.1 11.1 11.1 145.8 146.0 137.5 137.4
15 160.0 134.1 39.4 258.0 12.0 0.703 365.8 365.8 13.4 13.2 74.6 75.0 50.0 49.8 53.1 52.7 11.5 11.5 144.4 144.3 136.3 136.5
16 160.1 133.7 41.1 265.4 8.2 0.686 368.7 368.7 14.2 13.8 75.2 74.5 51.8 51.1 55.2 54.3 12.1 11.8 142.9 141.7 135.5 136.2
17 159.8 134.0 43.0 270.4 7.6 0.681 357.8 357.8 14.3 13.8 76.4 75.8 53.5 52.7 56.9 55.9 12.1 11.8 142.5 141.2 135.4 136.2