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Notre Dame Power Plant

Notre Dame Power Plant. Power Plant produces. Electricity Steam for heat Chill water for cooling Domestic cold water Domestic hot water Compressed air for building controls. Co-generation plant.

kendall-jefferson
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Notre Dame Power Plant

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  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 302 klbs/hr 2/5/07

  6. Boilers

  7. Chillers

  8. Fuel • Coal / Gas/ Oil

  9. #3 Stoker boiler Coal/Gas

  10. #3 boiler firebox

  11. #3 boiler water wall tubes

  12. #4 Boiler Coal/Gas/Oil

  13. #4 boiler cyclone

  14. #4 boiler furnace

  15. #5 Boiler Gas/Oil

  16. #5 boiler Gas flame pattern

  17. Turbine Generators • 400 psi inlet steam • 1 unit 10 psi exhaust back pressure • 1 unit 70 psi exhaust back pressure • 2 units 10 psi extraction • 1 unit 70 psi extraction

  18. #1 Turbine Generator10 psi extraction unit

  19. #1 turbine generator turbine rotor

  20. #7 turbine generator rotor

  21. #6 Turbine Generator10# extraction unit

  22. #7 turbine steam condenser

  23. 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.

  24. 1-5 Cooling towers

  25. #2 Turbine Generator70 psi steam back pressure unit

  26. #5 turbine generator10 psi back pressure unit

  27. #5 TG exhaust line

  28. 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.

  29. 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

  30. Turbine Generator

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