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

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on the Performance of a Domestic Small Multi Refrigerator According to a Capillary Tube Change

모세관 변경에 따른 가정용 소형 멀티 냉동시스템의 성능에 관한 연구

  • Published : 2005.06.01
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Abstract

This paper is an experimental study on the performance according to a capillary tube diameter and length in a domestic small multi refrigerator[kimchi refrigerator]. Pressure drop in a capillary tube is predicted by theoretical analysis and experimental method as the reduction of capillary tube diameter from 0.74 to 0.6 mm. The differences between experimental results and analytical results are mainly caused by friction factor in a capillary tube. Because there are no adequate equations used to calculate pressure drop of capillary tube diameter under 1.0mm. The empirical equations necessary for interpretation of capillary tube were derived from capillary tube test results data using curve fitting method. This study shows that the optimized designs of system, which is capillary tube length and refrigerant charge amount, are 2000mm, 83g at the capillary tube diameter 0.6mm and 3000mm, 73g at the capillary tube diameter 0.74mm. And capillary design tools and system matching techniques necessary for development of the kimchi refrigerator were also developed through this study.

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References

  1. Lee., M. Y., Choi, S. J. and Kim, S. O., 2003, 'Evaluation on the Cyclic and Adiabatic Performance of a Small Multi-Refrigeration System,' Proceeding of the KSME, Autumn Annual Conference, pp. 769-774
  2. Lee., M. Y., Choi, S. J. and Kim, S. O., 2004, 'Evaluation of the Performance Characteristics of Propane/Isobutene Refrigerant Mixtures in a Small Multi-Refrigeration System,' Proceeding of the KSME, Autumn Annual Conference, pp. 769-774
  3. Hong, K. S., Hwang, I. N. and Min, M. K., 2000, 'The Effect of Oil on Refrigerant Flow through Capillary Tubes,' Trans. of the Sarek. Vol. 12, No. 9, pp.791-801
  4. Jung, D. S. and Kim, C. B., 1995, 'Selection of Capillary Tubes for HCFC-22 Alternatives Fluids,' Trans. of the Sarek. Vol. 7, No. 3, pp. 435-449
  5. Stocker, W. F. and Jones J. W., 'Refrigeration and Air Conditioning,' 2nd Edition, McGraw-Hill, New York, NY, pp. 260-272
  6. Cooper, L., Chu, C. K. and Brisken, W. R., 1957, 'Simple Selection Method for Capillaries Derived from Physical Flow Conditions,' Refrigeration Engineering 65, No. 7, pp. 37-41
  7. Schulz, U. W., 1987, 'Critical Two-Phase Flow in a Capillary Tube Expansion Device,' Proceedings of the XVII International Refrigeration Conference, pp. 299-306
  8. Kim, S. G., Kim, M. S. and Ro, S. T., 2001, 'Flow and Pressure Drop Characterisitics of R22 in Adiabatic Capillary Tubes,' KSME Int. Journal, Vol. 15, No. 9, pp. 1328-1338