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Impact of Weather Conditions on the Operation of Power Unit Cooling Towers 905 MWe

Author

Listed:
  • Zbigniew Buryn

    (Faculty of Production Engineering and Logistics, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland)

  • Anna Kuczuk

    (Faculty of Mechanical Engineering, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland)

  • Janusz Pospolita

    (Faculty of Mechanical Engineering, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland)

  • Rafał Smejda

    (PGE GIK S.A. Branch Opole Power Plant, Brzezie k., 46-021 Opola, Poland)

  • Katarzyna Widera

    (Faculty of Economics and Management, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland)

Abstract

The paper presents the results of measurements and calculations concerning the influence of weather conditions on the operation of wet cooling towers of 905 MWe units of the Opole Power Plant (Poland). The research concerned the influence of temperature and relative humidity of air, wind and power unit load on the water temperature at the outlet from the cooling tower, the level of water cooling, cooling efficiency and cooling water losses. In the cooling water loss, the evaporation loss stream and the drift loss stream were distinguished. In the analyzed operating conditions of the power unit, for example, an increase in T a m b air by 5 °C (from 20 – 22 ° C to 25 – 27 ° C ) causes an increase in temperature at the outlet of the cooling tower by 3 – 4 ° C . The influence of air temperature and humidity on the level of water cooling Δ T w and cooling efficiency ε were also found. In the case of Δ T w , the effect is in the order of 0.1 – 0.2 ° C and results from the change in cooling water temperature and the heat exchange in the condenser. The ε value is influenced by air temperature and humidity, which determine the wet bulb temperature value. Within the range of power changes of the unit from 400 to 900 MWe , the evaporated water stream m ˙ e v , depending on the environmental conditions, increases from 400 – 600 tons / h to the value of 1000 – 1400 tons / h . It was determined that in the case of the average power of the unit at the level of 576.6 MWe , the average values of the evaporation and drift streams were respectively 0.78 % and 0.15 % of the cooling water stream. Using statistical methods, it was found that the influence of wind on the level of water cooling, cooling efficiency and cooling water losses was statistically significant.

Suggested Citation

  • Zbigniew Buryn & Anna Kuczuk & Janusz Pospolita & Rafał Smejda & Katarzyna Widera, 2021. "Impact of Weather Conditions on the Operation of Power Unit Cooling Towers 905 MWe," Energies, MDPI, vol. 14(19), pages 1-19, October.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:19:p:6412-:d:651315
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    References listed on IDEAS

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    1. Clemente García Cutillas & Javier Ruiz Ramírez & Manuel Lucas Miralles, 2017. "Optimum Design and Operation of an HVAC Cooling Tower for Energy and Water Conservation," Energies, MDPI, vol. 10(3), pages 1-27, March.
    2. Jun Fan & Haotian Dong & Xiangyang Xu & De Teng & Bo Yan & Yuanbin Zhao, 2019. "Numerical Investigation on the Influence of Mechanical Draft Wet-Cooling Towers on the Cooling Performance of Air-Cooled Condenser with Complex Building Environment," Energies, MDPI, vol. 12(23), pages 1-16, November.
    3. George W. Divine & H. James Norton & Anna E. Barón & Elizabeth Juarez-Colunga, 2018. "The Wilcoxon–Mann–Whitney Procedure Fails as a Test of Medians," The American Statistician, Taylor & Francis Journals, vol. 72(3), pages 278-286, July.
    4. Wei Yuan & Fengzhong Sun & Ruqing Liu & Xuehong Chen & Ying Li, 2020. "The Effect of Air Parameters on the Evaporation Loss in a Natural Draft Counter-Flow Wet Cooling Tower," Energies, MDPI, vol. 13(23), pages 1-16, November.
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    Cited by:

    1. Janusz Pospolita & Anna Kuczuk & Katarzyna Widera & Zbigniew Buryn & Robert Cholewa & Andrzej Drajczyk & Mirosław Pietrucha & Rafał Smejda, 2022. "Water Losses in the Condenser Cooling System at the 905 MWe Power Unit," Energies, MDPI, vol. 15(16), pages 1-25, August.

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