대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제34권12호
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  • Pages.1071-1078
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  • 2010
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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냉장고용 증발기의 핀 형상 변화에 따른 착상 열전달 성능특성

Frosting Heat Transfer Characteristics of Evaporators Used for Household Refrigerators According to Fin Configuration

  • 투고 : 2010.05.19
  • 심사 : 2010.10.04
  • 발행 : 2010.12.01
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초록

본 논문은 냉장고용 증발기의 핀 형상을 변화시켜가면서 열전달 성능을 실험적으로 규명하는 것을 목적으로 하고 있다. 냉장고용 핀-튜브 증발기에 나선형 원형핀, 개별 평판핀 및 연속 평판핀을 적용하여 무착상 및 착상 열전달 성능과 제상성능을 측정하고 특성변화를 고찰하였다. 무착상조건에서 나선형 원형핀 증발기의 총괄열전달계수가 개별 평판핀 증발기에 비하여 22.3% 우수하고, 연속 평판핀 증발기에 비하여 40.2% 우수함을 알 수 있었다. 착상조건에서 나선형 원형핀 증발기의 총괄열전달계수가 개별 평판핀 증발기에 비하여 27.0% 우수하고, 연속 평판핀 증발기에 비하여 46.3% 우수함을 알 수 있었다. 또한, 나선형 원형핀 증발기의 제상량은 개별 평판핀 증발기에 비하여 3.2% 적고, 연속 평판핀 증발기에 비하여 9.4% 적었다.

The objective of this study is to investigate the heat transfer characteristics of evaporators that have various fin configurations and are used in household refrigerators. The frosting and defrosting characteristics of a spirally coiled circular fin-tube evaporator, a discrete-plate fin-tube evaporator, and a continuous-plate fin-tube evaporator were measured and compared. Under non-frosting conditions, the heat transfer coefficient of the spirally coiled circular fin-tube evaporator was 22.3% and 40.2% higher than the coefficients of the discrete- and continuous-plate fin-tube evaporators, respectively. Under frosting conditions, the heat transfer coefficient of the spirally coiled circular fin-tube evaporator was 27.0% and 46.3% higher than the coefficients of the discrete- and continuous-plate fin-tube evaporators, respectively. In addition, the defrosting water amount of the spirally coiled circular fin-tube evaporator was 3.2% and 9.4% lower than the amounts in the case of the discrete- and continuous-plate fin-tube evaporators, respectively.

키워드

참고문헌

  1. Lee, M., Kim, S. and Kim, Y., 2007, "Performance Evaluations of a Residential Small Multi-Refrigeration System Considering the Adiabatic Characteristics," Trans. of the KSME, B, Vol. 31, No. 10, pp. 868-875.
  2. Kang, T., Lee, M., Kim, Y. and Yun, S., 2010, "Experimental Study on the Air-side Heat Transfer Characteristics of a Spirally-coiled Circular Fin-tube Heat Exchanger with the Variation of Geometric Parameters," Trans. of the KSME, B, In press.
  3. Saiz Jabardo, J. M., Bastos Zoghbi Filho, J. R. and Salamanca, A., 2006, "Experimental Study of the Air Side Performance of Louver and Wave Fin-and-tube Coils," Experimental Thermal and Fluid Science, Vol. 30, pp. 621-631. https://doi.org/10.1016/j.expthermflusci.2006.01.001
  4. Tao, Y. B., He, Y. L., Huang, J., Wu, Z. G. and Tao, W. Q., 2007, "Numerical Study of Local Heat Transfer Coefficient and Fin Efficiency of Wavy Fin-and-tube Heat Exchangers," Int. J. of Thermal Sciences, Vol. 46, pp. 768-778. https://doi.org/10.1016/j.ijthermalsci.2006.10.004
  5. Yun, R., Kim, Y. and Kim, Y., 2009, "Air Side Heat Transfer Characteristics of Plate Finned Tube Heat Exchangers with Slit Fin Configuration Under Wet Conditions," Applied Thermal Engineering, Vol. 29, pp. 3014-3020. https://doi.org/10.1016/j.applthermaleng.2009.03.017
  6. Kim, Y. H., 2004, Study on the Frosting and Defrosting Performance of Fin-Tube Heat Exchangers, Ph. D. Thesis, Korea University.
  7. Moffat, R.J., 1985, "Uncertainty Analysis in the Planning of an Experiment, J. Fluids Engineering, Vol. 107, 173-178. https://doi.org/10.1115/1.3242452
  8. Lee, M., 2010, Heat and Mass Transfer Characteristics of a Spirally-coiled Circular Fin-tube Heat Exchanger, Ph. D. Thesis, Korea University.
  9. Yan, W. M., Li, H. Y., Wu, Y. J., Lin, J. Y. and Chang, W. R., 2003, "Performance of Finned Tube Heat Exchanger Under Frosting Condition," Int. J. Heat Mass Transfer, Vol. 46, 871-877. https://doi.org/10.1016/S0017-9310(02)00346-0
  10. Lee, M., Kang, T. and Kim, Y., 2010, "Air-Side Heat Transfer Characteristics of Spiral-Type Circular Fin-tube Heat Exchangers," Int. J. of Refrigeration, Vol. 33, pp. 313-320. https://doi.org/10.1016/j.ijrefrig.2009.09.019
  11. Hayashi, Y., Aoki, A., Adachi, S. and Hori, K., 1977, "Study of Frost Properties Correlating with Frost Formation Types," Int. J. Heat Transfer, Vol. 99, pp. 239-245. https://doi.org/10.1115/1.3450675
  12. Lee, K. S., Lee T. H. and Kim W. S. 1995, "An Experimental Study on the Effects of Design Factors for the Performance of Fin-tube Heat Exchanger under Frosting Conditions," Trans. of the KSME A, Vol. 19, No. 10, pp. 2657-2666.
  13. Lee, M., Kim, Y., Lee, H. and Kim, Y., 2010, "Airside Heat Transfer Characteristics of Flat Plate Finnedtube Heat Exchangers with Large Fin Pitches under Frosting Conditions," Int. J. Heat Mass Transfer, Vol. 53, pp. 2655-2661. https://doi.org/10.1016/j.ijheatmasstransfer.2010.02.047

피인용 문헌

  1. Study on Performance Characteristics of Spiral Fin-Tube Evaporator Applied to Domestic Refrigerator-Freezers vol.37, pp.3, 2013, https://doi.org/10.3795/KSME-B.2013.37.3.205