notre dame power plant. power plant produces electricity steam for heat chill water for cooling...

Notre Dame Power Plant

Power Plant producesElectricity

Steam for heat

Chill water for cooling

Domestic cold water

Domestic hot water

Compressed air for building controls

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.

Co-generation plant

We are produce about half of the electricity the campus uses on the average day

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

Boilers          NORMAL OPERATING SUPERHEATER

- - - - - - OUTLET CONDITIONS - - - - - -

BOILER # YEAR FUELS TYPE BOILER MANUFACTURER

MAX CONTIN

UOUS

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

70,000 400 Variable

3 1952 Coal & Nat. Gas **

Stoker Union Iron Works

70,000 400 Variable

4 1967 Coal, #2 Oil & Nat. Gas

Cyclone B&W 170,000 400 725

5 1973 #2 Oil & Nat. Gas A-Frame C-E 180,000 400 Variable

Packaged

        Total: 555,000    

Electrical Generator Units

GENER. YEAR MANUFACTURER

MAX CONTINUOUS

Extraction Exhaust COMMENTS

# INSTALLED (prime mover/generator

)

RATING, KVA PSIG PSIG

1 1962 Elliott/Elliott 3,750 10 --- extraction

2 1962 Elliott/Elliott 2,000 --- 70 Back Pressure

3 1967 Fairbanks-Morse/Elliott

1,250 NA NA Diesel

4 1983 Fairbanks-Morse/Elliott

1,250 NA NA Diesel

5 1990 Elliott/Elliott 2,500 --- 10 Back Pressure

6 1999 Elliott/Elec. Machinery

6,250 10 --- Extraction

7 2000 Tuthill Murray/Ideal

11,750 70 --- extraction

8 2004 Caterpillar 2,280 NA NA Diesel

9 2004 Caterpillar 2,280 NA NA Diesel

10 2004 Caterpillar 2,280 NA NA Diesel

    Total: 35,590      

ChillersChilled Water Units

CHILER # YEAR REFRIGERANT MANUFACTURER MAX CONTINUOUS TURBINE

INSTALLED TYPE RATING, tons INLET,

      PSIG

1 1962 R-12 Carrier 1,500 400

2 1962 R-12 Carrier 1,500 400

3 1967 R-134A Carrier 3,000 400

4 1983 R-134A Carrier 3,300 70

5 1990 R-22 York 4,000 400/10

6 1999 R-134A York 4,000 70

7 2000 R-134A York 4,000 70

      Total: 21,300  

Fuel Coal / Gas/ Oil

#3 Stoker boiler Coal/Gas

#3 boiler firebox

#3 boiler water wall tubes

#4 Boiler Coal/Gas/Oil

#4 boiler cyclone

#4 boiler furnace

#5 Boiler Gas/Oil

#5 boiler Gas flame pattern

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

#1 Turbine Generator10 psi extraction unit

#1 turbine generator turbine rotor

#7 turbine generator rotor

#6 Turbine Generator10# extraction unit

#7 turbine steam condenser

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.

1-5 Cooling towers

#2 Turbine Generator70 psi steam back pressure unit

#5 turbine generator10 psi back pressure unit

#5 TG exhaust line

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.

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

BOILERS

    DATA            

BOILER HOURS AVER AVERAGE FEEDWATER STEAM ENERGY GROSS STEAM BOILER

  HOURS STEAM STEAM FEEDWATER STEAM INPUT STEAM NET THERMAL

  OF TEMP. ENTHALPY FLOW GEN. FUEL OUTPUT GAIN EFFICIENCY

UNITS OPERATION DEG F BTU/# K#'S K#'S MMBTU MMBTU 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 24 722 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 0 0 0 0 0 0 0.0%

TOTALS:     1,366 4,320 4,157 6,182 5,677 4,813 77.9%

TURBINES

HOURS STEAM

EXTRACT.

AVERAGE COND

AVERAGE

ENERGY

ENERGY

ENERGY ENERGY GROSS GENER

  OF TO FROMEXTRACT. FROM COND. INPUT

EXTRACT. TO TO HEAT ENERGY

OPERATION GENER. GENER. TEMP

GENER. TEMP  

/EXHAU

ST FWH GENER. RATEPERCEN

T

UNITSHOURS K#'S K#'S

DEG F K#'S DEG F MMBTU MMBTU

MMBTU MMBTU

BTU/KWH %

1 0 0 0 0 0 0 0 0 0 0   0.0%

2 0 0   0     0 0   0   0.0%

5 24 904   305     1,234 1,078   156 3,190 3.2%

6 24 1,504 1,167 310 337 95 2,054 1,395 21 638 6,628 13.3%

7 24 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%

KWH'S TOTAL AVER COST TOTAL

  KWH ENERGY OF COST OF

  GENER. COST GENER GENER.

  KWH $/MMBTU $/KWH $

1 0 $5.4745 0 $0.00

2 0 $5.4745 0 $0.00

3 0 0 0 $0.00

4 0 0 0 $0.00

5 48,962 $5.4745 $0.0224 $1,098.18

6 96,223 $5.4745 $0.0466 $4,484.46

7 72,919 $5.4745 $0.0693 $5,051.03

8 0 0 0 $0.00

9 0 0 0 $0.00

10 0 0 0 $0.00

TOTAL: 218,104   $0.0488 $10,633.67

Turbine Generator