Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study of Anti-Condensation on the Surface for Aluminum Butterfly Valves

알루미늄 버터플라이밸브의 표면 결로방지에 관한 연구

  • Received : 2021.01.11
  • Accepted : 2021.02.08
  • Published : 2021.04.30
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Abstract

The objective of this study is to prevent or decrease condensation on the surface of aluminum butterfly valves used in high humidity air conditions. We proposed a new valve with an anti-condensation device, a heat resistance medium, instead of a conventional valve. We, then, compared the surface temperature distribution between the proposed and conventional valves using experimental and analytical methods. The size of the evaluated valve is 100A and fluid conditions are 35℃/RH 75% in the air outside the valve and 5℃ in the cooling water inside the valve. The experimental results show that the surface temperature of the proposed valve is 23~42% higher than that of a conventional valve, thereby exhibiting an anti-condensation effect. As a result, we observed the complete prevention of condensation on a gear box mounted to the proposed valve, showing surface temperature distribution above the dew point temperature of air. The analytical results are in agreement with the trends in experimental results.

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References

  1. Seok, H. T., Jung, J. N. and Song, S. Y., "A Study on the evaluation of the heat transmission performance and improvement of thermal insulation of stone finished curtain wall system, Journal of the Architectural Institute of Korea, Vol. 23, No. 4, pp. 209-216, 2007.
  2. Hwang, I. S., Lee, Y. L., "A Study on Performance Test and Fabrication of Vacuum Glazing with Numerical Analysis., Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 25, No. 6, pp. 303-309, 2013. https://doi.org/10.6110/KJACR.2013.25.6.303
  3. Moon, C. H., "Heat Dissipation Analysis of High-Power, Multi-Chip LED Bulbs," Korean Journal of Metal Materials, Vol. 56, No. 3, pp. 227-234, 2018. https://doi.org/10.3365/KJMM.2018.56.3.227
  4. Cho, J. U. Han, M. S., "Thermal Analysis According to Material of Manifold," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 8, No. 3, pp. 33-37, 2009.
  5. Baek, N. G., Lee, J. Y., "A Numerical Study on Thermal Analysis of Fuel Shut-off Valve," Journal of the Korean Society of Propulsion Engineers, Vol. 16, No. 5, pp. 108-114, 2012. https://doi.org/10.6108/KSPE.2012.16.5.108
  6. Kim, S. J., Je, J. H. and Kim, M. H., "3D Numerical Study of Horizontal Falling Film Evaporator in Multi Effect Distillation (MED) Plant," Korean Society of Mechanical Engineers B, Vol. 37, No. 5, pp. 513-522, 2013. https://doi.org/10.3795/KSME-B.2013.37.5.513
  7. Jeon, D. S., Ko, J. W. and Kim, S. C., "Effects of Tube Diameter and Surface Sub-Cooling Temperature on R1234ze(E) and R1233zd(E) Film Condensation Heat Transfer Characteristics in Smooth Horizontal Laboratory Tubes," Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 29, No. 5, pp. 231-238, 2017. https://doi.org/10.6110/KJACR.2017.29.5.231