Experimental study on frosting characteristics of vertical fins

XU Conghui; XIA Peng

doi:10.12299/jsues.23-0201

Volume 38 Issue 4

Dec. 2024

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Article Navigation > Journal of Shanghai University of Engineering Science > 2024 > 38(4): 389-394

XU Conghui, XIA Peng. Experimental study on frosting characteristics of vertical fins[J]. Journal of Shanghai University of Engineering Science, 2024, 38(4): 389-394. doi: 10.12299/jsues.23-0201

Citation:

XU Conghui, XIA Peng. Experimental study on frosting characteristics of vertical fins[J]. Journal of Shanghai University of Engineering Science, 2024, 38(4): 389-394. doi: 10.12299/jsues.23-0201

XU Conghui, XIA Peng. Experimental study on frosting characteristics of vertical fins[J]. Journal of Shanghai University of Engineering Science, 2024, 38(4): 389-394. doi: 10.12299/jsues.23-0201

Citation:

XU Conghui, XIA Peng. Experimental study on frosting characteristics of vertical fins[J]. Journal of Shanghai University of Engineering Science, 2024, 38(4): 389-394. doi: 10.12299/jsues.23-0201

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Experimental study on frosting characteristics of vertical fins

doi: 10.12299/jsues.23-0201

XU Conghui,
XIA Peng^,

School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Received Date: 2023-09-19
Publish Date: 2024-12-31

Abstract

Abstract

In winter, the surface of the vertical fin of the cold end of the outdoor air intake device is prone to frost. Through visualization experiments, the characteristics of frost formation on the surface of vertical fins under different air conditions were studied to provide a basis for suppressing frost formation on the surface of fins. The results show that the frost crystal morphology of fin surface is affected by the cold surface temperature, and the frost crystal show irregular shape, fan shape, feather shape and tree shape in turn when the cold surface temperature decreases. When set the relative humidity of the air to 60% and increase the air temperature within the range of 10 to 25 ℃, it was found that the freezing time of water droplets on the surface of the fin was shortened from 273 to 205 s and then extended to 269 s. The average frost growth rate was first fast and then slow. When the air temperature is setted to 20 ℃ and the relative humidity of air increases within the range of 20% ~ 80%, the freezing time of water droplets on the surface of fin is gradually shortened from 345 to 218 s, and the average growth rate of frost layer is faster. The moisture content of the air is approximately equal, the air temperature increases within the range of 10 to 25 ℃, and the average growth rate of the frost layer slows down.
- frost formation on fins,
- freezing time,
- frost crystal morphology,
- frost layer height

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References(20)

References

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