1. Notre Dame Power Plant

2. Power Plant produces Electricity Steam for heat
Chill water for cooling
Domestic cold water
Domestic hot water
Compressed air for building controls

3. Co-generation plant
We produce 400 psi superheated steam in our boiler then use the steam to turn turbine generators to produce electricity. We extract a portion of the steam at a lower pressure from the turbines. We then use the lower pressure steam again for heating, domestic hot water production ,and chilled water production.

4. Co-generation plant
We are produce about half of the electricity the campus uses on the average day

5. Peak Demands Electric 24.4 MW 8/28/06 Chill water 15,100 ton/hr 8/1/06
Steam summer 321 klbs/hr 8/1/06
Steam winter klbs/hr 2/5/07

6. Boilers NORMAL OPERATING SUPERHEATER
NORMAL OPERATING SUPERHEATER
OUTLET CONDITIONS
BOILER #
YEAR
FUELS
TYPE BOILER
MANUFACTURER
MAX CONTINUOUS
PRESSURE,
TEMP.,
INSTALLED
FIRED
RATING, PPH
PSIG ºF 1
1961
Nat. Gas & #6 Oil
Keystone
Erie City
65,000 *
400
Variable 2
1952
Coal & Nat. Gas **
Stoker
Union Iron Works
70,000 3 4
1967
Coal, #2 Oil & Nat. Gas
Cyclone
B&W
170,000
725 5
1973
#2 Oil & Nat. Gas
A-Frame
C-E
180,000
Packaged
Total:
555,000

7. Electrical Generator Units
YEAR
MANUFACTURER
MAX CONTINUOUS
Extraction
Exhaust
COMMENTS #
INSTALLED
(prime mover/generator)
RATING, KVA
PSIG 1
1962
Elliott/Elliott
3,750 10
---
extraction 2
2,000 70
Back Pressure 3
1967
Fairbanks-Morse/Elliott
1,250 NA
Diesel 4
1983 5
1990
2,500 6
1999
Elliott/Elec. Machinery
6,250 7
2000
Tuthill Murray/Ideal
11,750 8
2004
Caterpillar
2,280 9
Total:
35,590

8. Chillers Chilled Water Units CHILER # YEAR REFRIGERANT MANUFACTURER
MAX CONTINUOUS
TURBINE
INSTALLED
TYPE
RATING, tons
INLET,
PSIG 1
1962
R-12
Carrier
1,500
400 2 3
1967
R-134A
3,000 4
1983
3,300 70 5
1990
R-22
York
4,000
400/10 6
1999 7
2000
Total:
21,300

9. Fuel
Coal / Gas/ Oil

10. #3 Stoker boiler Coal/Gas

11. #3 boiler firebox

12. #3 boiler water wall tubes

13. #4 Boiler Coal/Gas/Oil

14. #4 boiler cyclone

15. #4 boiler furnace

16. #5 Boiler Gas/Oil

17. #5 boiler Gas flame pattern

18. Turbine Generators 400 psi inlet steam
1 unit psi exhaust back pressure
1 unit psi exhaust back pressure
2 units 10 psi extraction
1 unit psi extraction

19. #1 Turbine Generator 10 psi extraction unit

20. #1 turbine generator turbine rotor

21. #7 turbine generator rotor

22. #6 Turbine Generator 10# extraction unit

23. #7 turbine steam condenser

24. Extraction turbines have a steam condenser operating under a vacuum to condense the steam not extracted for other processes. The condensate (condensed steam) is returned to the boilers to produce steam again.
The unused heat from the condensed steam is rejected to the lake.
Before the water is returned to the lake it is cooled in 1 of 5 cooling towers
Extraction turbines are able to meet variable steam load conditions and still maintain electrical production needs.

25. 1-5 Cooling towers

26. #2 Turbine Generator 70 psi steam back pressure unit

27. #5 turbine generator 10 psi back pressure unit

28. #5 TG exhaust line

29. Back pressure units exhaust steam at a back pressure directly into a steam line. No condenser.
No heat is sent to the lake.
Not very flexible for load conditions. Must have some place for the steam to go. Electrical production varies with steam load conditions.

30. Conditions that rob plant efficiency
Wrong boiler fuel to air ratio
Water side boiler scale
Fireside boiler slagging
Turbine blade deposits
Poor turbine blade condition
Waterside steam condenser tube scale

31. BOILERS DATA BOILER HOURS AVER AVERAGE FEEDWATER STEAM ENERGY GROSS
DATA
BOILER
HOURS
AVER
AVERAGE
FEEDWATER
STEAM
ENERGY
GROSS
INPUT
NET
THERMAL OF
TEMP.
ENTHALPY
FLOW
GEN.
FUEL
OUTPUT
GAIN
EFFICIENCY
UNITS
OPERATION
DEG F
BTU/#
K#'S
MMBTU
PERCENT 1 15
672
1,343
445
467
688
627
538
78.2% 2 24
667
1,340
952
882
1,284
1,182
991
77.2% 3
722
1,371
846
779
1,353
1,068
899
66.4% 4 17
737
1,380
2,077
2,029
2,857
2,800
2,384
83.5% 5
0.0%
TOTALS:
1,366
4,320
4,157
6,182
5,677
4,813
77.9%

32. TURBINES
HOURS
STEAM
EXTRACT.
AVERAGE
COND
ENERGY
GROSS
GENER OF TO
FROM
COND.
INPUT
HEAT
OPERATION
GENER.
TEMP
/EXHAUST
FWH
RATE
PERCENT
UNITS
K#'S
DEG F
MMBTU
BTU/KWH % 1
0.0% 2 5 24
904
305
1,234
1,078
156
3,190
3.2% 6
1,504
1,167
310
337 95
2,054
1,395 21
638
6,628
13.3% 7
1,077
563
523
514 80
1,471
728 25
718
9,851
14.9%
TOTAL:
3485.0
1730.0
851
4,759
3,201 46
1,512
6,934
31.4%

33. Turbine Generator KWH'S TOTAL AVER COST KWH ENERGY OF COST OF GENER.
KWH
ENERGY OF
COST OF
GENER.
GENER
$/MMBTU
$/KWH $ 1
$5.4745
$0.00 2 3 4 5
48,962
$0.0224
$1,098.18 6
96,223
$0.0466
$4,484.46 7
72,919
$0.0693
$5,051.03 8 9 10
TOTAL:
218,104
$0.0488
$10,633.67