Thursday 24 June 2021

36. STEAM RATING CHART FOR TURBINES

 



D B Jambhale Consulting Sugar Technologist 
Pune  Maharashtra, Inida, 


STEAM  RATING  CHART  FOR  TURBINES

Table I

 

Sr.

No

Turbine

Inlet Pr.

Temp

 

Exhaust

Pr.

Steam Rating  at Turbine Efficiency

(Kg/KWH)

 


Kg/cm2g

0C

Kg/cm2g

40%

Ex.T0c

45%

Ex.T 0c

50%

 

 

 

 

 

 

 

 

 

1

20

320

1.0

18.78

203

16.67

191

15.00

2

30

375

1.0

15.39

234

13.68

220

12.31

3

42

415

1.0

13.41

253

11.92

237

10.73

4

42

440

1.0

12.92

277

11.48

260

10.33

5

42

480

1.0

12.17

314

10.82

296

9.74

6

62

480

1.0

11.33

292

10.08

272

9.07

7

62

510

1.0

10.86

320

9.65

299

8.69

8

86

510

1.0

10.34

299

9.19

277

8.27

9

42

415

7.0

21.41

310

19.03

300

17.12

10

42

440

7.0

20.50

334

18.22

324

16.40

11

42

480

7.0

19.21

373

17.07

361

15.36

12

62

480

7.0

16.59

347

14.75

334

13.27

13

62

510

7.0

15.80

376

14.07

362

12.65

14

86

510

7.0

14.40

353

12.80

338

11.52

15

42

480

0.1  (a)

7.66

223

6.80

192

6.12

16

62

480

0.1  (a)

7.40

202

6.58

171

5.92

17

87

510

0.1  (a)

6.99

210

6.21

177

5.59

18

20

320

3.5

26.63

235

23.67

223

21.30

19

20

370

3.5

24.23

284

21.53

275

19.38

20

32

370

3.5

20.00

258

17.78

247

16.00

21

32

430

3.5

18.00

315

16.00

302

14.40

22

42

430

3.5

16.52

299

14.69

286

13.22

23

42

470

3.5

15.47

337

13.75

322

12.37

24

62

470

3.5

14.0

313

12.44

297

11.20

 

 

 

 

 

 

 

 

 


 

  STEAM  RATING  CHART  FOR  TURBINES

Table II

 

Sr.

No

Turbine

Inlet Pr.

Temp

 

Exhaust

Pr.

Steam Rating  at Turbine Efficiency

(Kg/KWH)

 


Kg/cm2g

0C

Kg/cm2g

55%

60%

65%

70%

75%

 

 

 

 

 

 

 

 

 

25

20

320

1.0

13.66

12.52

11.55

10.73

10.02

26

30

375

1.0

11.19

10.26

9.47

8.79

8.20

27

42

415

1.0

9.75

8.94

8.25

7.66

7.15

28

42

440

1.0

9.39

8.61

7.95

7.38

6.89

29

42

480

1.0

8.85

8.11

7.49

6.95

6.49

30

62

480

1.0

8.24

7.56

6.98

6.47

6.05

31

62

510

1.0

7.90

7.24

6.68

6.20

5.79

32

86

510

1.0

7.51

6.89

6.36

5.90

5.61

33

42

415

7.0

15.55

14.27

13.17

12.23

11.42

34

42

440

7.0

14.90

13.66

12.61

11.71

10.93

35

42

480

7.0

13.97

12.86

11.82

10.97

10.25

36

62

480

7.0

12.06

11.06

10.20

9.48

8.84

37

62

510

7.0

11.50

10.54

9.72

9.03

8.43

38

86

510

7.0

10.47

9.60

8.86

8.23

7.68

39

42

480

0.1  (a)

5.55

5.10

4.71

4.37

4.08

40

62

480

0.1  (a)

5.38

4.93

4.56

4.23

3.95

41

87

510

0.1  (a)

5.08

4.66

4.30

3.99

3.72

42

20

320

3.5

19.37

17.65

 

 

 

43

20

370

3.5

17.62

16.15

 

 

 

44

32

370

3.5

14.55

13.34

 

 

 

45

32

430

3.5

13.09

12.00

 

 

 

46

42

430

3.5

12.02

11.02

 

 

 

47

42

470

3.5

11.25

10.31

 

 

 

48

62

470

3.5

10.18

9.33

 

 

 

 

 

 

 An old sugar factory


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