2020

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Browsing 2020 by Author "Sohail Iftikhar"

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    Parametric modeling and performance analysis of combined cycle power plant
    (UMT.Lahore, 2020) Sohail Iftikhar
    Electrical energy is very critical for the financial growth of any state or country. As the economy flourishes, the need for more electric energy is required to fulfill the needs of its people in different fields of life. New electric power plants installations results in heavy costs; thus, it requires using the existing power stations efficiently and economically. This research work provides standard testing techniques and methodology for the determination of the electrical output and performance of combined cycle thermal power plants (CCPP) and operating/maintaining the plant efficiently. This study leads to the establishment of the performance results, such as  Corrected / Un-Corrected Gross Power Output  Corrected / Un-Corrected Net Power Output  Corrected / Un-Corrected Gross Heat Rate or Efficiency (HHV & LHV Basis)  Corrected / Un-Corrected Net Heat Rate or Efficiency (HHV & LHV Basis) These performance parameters are deduced after correcting the impact of ambient temperature, barometric pressure, relative humidity, fuel calorific value, fuel supply temperature, grid frequency, power factor, steam leakages of steam cycle, and cooling water temperature collectively at the same time, to the reference site conditions. For the performance analysis of CCPP, Korangi Power Complex (KPC) having 248 MW capacity 4+2+2 configuration with thermal efficiency ranges from 47 to 50% on the higher heating value basis, has been studied. The testing conditions are corrected to reference conditions like 30 °C temperature, 60 % humidity, 1.10325 bars barometric pressure etc. It was inferred from the research work that with an increase of 4.85 0C ambient temperature, 10.55 % relative humidity, 7.58 0C fuel supply temperature, 7.22 0C condenser cooling water temperature, 6 tones blowdown of HRSG and decrease of 10.1 mbar barometric pressure as compared to the designed conditions or RSC of the plant, the complex reduces its capacity of 16.16 MW and increase the heat rate of 82.19 BTU/kWh or reduces the efficiency of 0.407 % which hammers the financial condition of the plant to a great extent. Electrical power output and heat rate analysis of thermal power plants focuses on identifying efficiency gaps and implementing actions to eliminate the factors that decreases efficiency. In addition, the research work also provides the individual impact of several different parameters, quantitatively and qualitatively, which may affects the performance of any power plant specifically re-gasified liquefied natural gas based CCPP. These parameters include temperature, pressure, humidity, power factors, fuel calorific value, grid frequency, fuel supply temperature, cooling water temperature etc. Keywords: Performance Test, Thermal Power Plant, RLNG based CCPP, Heat Rate, Power Output