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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