PREMIER INDUSTRIES, INC.

ChartObject GAS TURBINE PERFORMANCE

Data shown is based on  data "with evaporative cooling" during the year 1998 at Nevada Power, Clark Generating Station.
Data shown "without evaporative cooling" is based on similar turbine operating in same climate conditions without external cooling.
Gas Turbine Model and Rating:
    Westinghouse 501B6 rated at base and isometric conditions at 83,350 MW
Weather Data:
    Weather data is based on calculated average conditions of Dry Bulb (f) and Wet Bulb (f) conditions.
Evaporative Cooling Equipment and Filter Housing:
    Designed, built and installed by Premier Industries, Inc., 11050 N. 22nd Ave., Phoenix, AZ 85029

PERFORMANCE DATA
AMB COND (AVG)   JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC TOTAL
ALT. 1700 1700 1700 1700 1700 1700 1700 1700 1700 1700 1700 1700  
Db(f) 47.5 52.4 60.5 66.63 74.9 84.57 91.67 91.5 82.7 68.57 53.57 47.53  
RH% 56.37 52.4 39.53 24.77 26.83 17.63 17.4 21.1 22.57 29.2 37 42.7  
OUTPUT WITHOUT EVAP COOLING MW 61946 54981 59086 55842 55822 51988 52238 52267 52358 57259 58666 61945 674,398
HR 11544 11575 11629 11676 11750 11844 11930 11933 11825 11695 11579 11541  
HC 961 947 924 906 882 855 838 838 860 900 943 961  
OUTPUT WITH EVAP COOLING MW 63442 56719 61820 59659 60259 57708 58673 58281 57515 61067 60684 63919 719,746
HR 11508 11528 11559 11565 11610 11631 11670 11687 11638 11584 11518 11495  
HC 981 973 960 958 940 932 920 916 930 951 977 988  

Note:  Increased production of Turbine is based on continuous operation.   Downtime is not considered and must be deducted.
           Maintenance and operator cost remain approximately the same at higher output.  Cost of H2o is minimal.   In the combined cycle configuration steam production increases at no added cost and is typically a ratio of 1 MW steam for every 2 MW increase.
1.  AMB Db = Dry Bulb Temp (f)  2. AMB  RH% = Relative Humidity  3. MW = Megawatt output   4.  HR = BTU/KWH 5. HC = Heat Content at 106BTU/HR.

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