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Experimental and numerical simulation investigations of an axial flow fan performance in high-altitude environments

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  • Liu, Xue
  • Liu, Jian
  • Wang, Dong
  • Zhao, Long

Abstract

To study the operating performance of fans at high altitudes, a pressure-variable ventilation device able to vary the gas phase environment of fans and pipeline was designed. The fan performances at altitudes of 0 m, 900 m, 1900 m, 3000 m, and 4300 m were tested, and computational fluid dynamics (CFD) methods were used to simulate fan performance at high altitudes. The results indicated that under the same number of revolutions, as the altitude increases, the fan's output volume flow slightly decreases, the static pressure difference between the pressure surface and the suction surface of the blade decreases, the load of the blade decreases, the fan's output static pressure and shaft power linearly decrease, and the fan's static pressure efficiency nonlinearly decreases. In a high-altitude environment, the noise pressure pulsation interval and amplitude of fan noise are reduced, discrete noise and broadband noise are weakened at the same time, and the A sound level of each frequency band is reduced on a yearly basis.

Suggested Citation

  • Liu, Xue & Liu, Jian & Wang, Dong & Zhao, Long, 2021. "Experimental and numerical simulation investigations of an axial flow fan performance in high-altitude environments," Energy, Elsevier, vol. 234(C).
    • Handle: RePEc:eee:energy:v:234:y:2021:i:c:s0360544221015292
    DOI: 10.1016/j.energy.2021.121281
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    References listed on IDEAS

    as
    1. Li, Chunxi & Lin, Qing & Ding, Xueliang & Ye, Xuemin, 2016. "Performance, aeroacoustics and feature extraction of an axial flow fan with abnormal blade angle," Energy, Elsevier, vol. 103(C), pages 322-339.
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    4. Ye, Xuemin & Ding, Xueliang & Zhang, Jiankun & Li, Chunxi, 2017. "Numerical simulation of pressure pulsation and transient flow field in an axial flow fan," Energy, Elsevier, vol. 129(C), pages 185-200.
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    Cited by:

    1. Wang, Youhao & Sun, Lihui & Guo, Chang & He, Suoying & Gao, Ming & Xu, Qinghua & Zhang, Qiang, 2023. "Vibration characteristics and strength analysis of two-stage variable-pitch axial-flow fan based on fluid-solid coupling method," Energy, Elsevier, vol. 284(C).
    2. Ye, Xuemin & Zheng, Nan & Hu, Jiami & Li, Chunxi & Xue, Zhanpu, 2022. "Numerical investigation of the benefits of serrated Gurney flaps on an axial flow fan," Energy, Elsevier, vol. 252(C).

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