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The Effect of Air Parameters on the Evaporation Loss in a Natural Draft Counter-Flow Wet Cooling Tower

Author

Listed:
  • Wei Yuan

    (School of Energy and Power Engineering, Shandong University, Jinan 250061, China)

  • Fengzhong Sun

    (School of Energy and Power Engineering, Shandong University, Jinan 250061, China)

  • Ruqing Liu

    (School of Energy and Power Engineering, Shandong University, Jinan 250061, China)

  • Xuehong Chen

    (School of Energy and Power Engineering, Shandong University, Jinan 250061, China)

  • Ying Li

    (School of Energy and Power Engineering, Shandong University, Jinan 250061, China)

Abstract

The measures to reduce the impact of evaporation loss in a natural draft counter-flow wet cooling tower (NDWCT) have important implications for water conservation and emissions reduction. A mathematical model of evaporation loss in the NDWCT was established by using a modified Merkel method. The NDWCTs in the 300 MW and 600 MW power plant were taken as the research objects. Comparing experimental values with calculated values, the relative error was less than 3%. Then, the effect of air parameters on evaporation loss of NDWCT was analyzed. The results showed that, with the increase of dry bulb temperature, the evaporation heat dissipation and the evaporation loss decreased, while the rate of evaporation loss caused by unit temperature difference increased. The ambient temperature increased by 1 °C and the evaporation loss was reduced by nearly 26.65 t/h. When the relative air humidity increased, the evaporation heat dissipation and evaporation loss decreased, and the rate of evaporation loss caused by unit temperature difference decreased. When relative air humidity increased by 1%, the outlet water temperature rose by about 0.08 °C, and the evaporation loss decreased by about 5.63 t/h.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:23:p:6174-:d:450340
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    References listed on IDEAS

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    Cited by:

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    2. 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.
    3. Hao, Guochen & Han, Kewu & Shi, Kebin, 2023. "Effect of floating balls on evaporation inhibition, surface energy balance and biological water quality parameters at different coverage fractions," Agricultural Water Management, Elsevier, vol. 287(C).
    4. Yao, Shunyu & Zhang, Wenjie & Xu, Lei & Du, Xiaoze & Wei, Huimin, 2024. "Theoretical modeling and investigation of the influence of deaerator on the transient process in power plants," Applied Energy, Elsevier, vol. 376(PB).

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