DOI QR코드

DOI QR Code

역열손실 방법을 이용한 냉장고 얼음 배출구 영역에서의 열손실 개선에 관한 연구

A Study on the Heat Loss Improvement in a Refrigerator Ice Dispenser by Using Reverse Heat Loss Method

  • Ha, Ji Soo (Department of Environment Science, Keimyung University)
  • 투고 : 2012.12.28
  • 심사 : 2013.06.17
  • 발행 : 2013.06.30

초록

본 연구는 빌트인 냉장고 내부를 가열하여 냉장고의 열손실 특성을 파악하는 역열손실 방법을 이용하여 냉장고의 열손실이 큰 부분이 어느 영역인지를 분석함으로써 이를 개선하는 것에 목적을 두고 있다. 이를 위해서 적외선 열화상 카메라를 이용하여 냉장고 외부 표면 온도를 측정함으로써 열손실을 분석하였으며 이를 통하여 상대적으로 열손실이 큰 부분인 얼음배출구에서의 열손실 개선을 시도하였다. 또한, 이에 관한 열전달 전산해석을 수행하여 열손실 구조를 규명하였으며 적용 가능한 열손실 개선 방안인 모서리 부분의 곡면반경을 증가하여 열손실이 개선되는 특성을 살펴보았다. 본 연구의 결과로 부터 얼음배출구 모서리 부분의 곡면 반경을 30mm로 하면 모서리 부분의 열손실이 최적으로 개선되는 것을 알 수 있었다.

The present study has been carried out to reduce the heat loss from a built in refrigerator by using reverse heat loss method to discern the region with larger heat loss. To perform this purpose, an infrared thermographic camera has been used to measure the surface temperature of the refrigerator and tried to improve the heat loss near the ice dispenser. The numerical heat transfer analysis also has been accomplished to clarify the heat transfer mechanism near the ice dispenser. The possible applicable method to reduce heat loss was increasing the curvature radius at the ice dispenser corner. The curvature radius has been changed from 0mm to 40mm to see the effect of the curvature at the corner. From the present research, the optimal curvature radius for the reduction of heat loss at the ice dispenser could be 30mm.

키워드

참고문헌

  1. Park, J. K.,, Optimization of heat insulation system for a household refrigerator, Korean Journal of Air-Conditioning and Refrigeration Engineering, 2003, Vol. 15, No. 2, pp. 95-102.
  2. Jung, D. S.,, Computer simulation of refrigeration cycle of domestic refrigerators combined with cabinet heat transfer, Proceedings of the SAREK 1993 Winter Annual Conference,1993, pp. 88-94.
  3. Lee, M. Y., Choi, S. J. and Kim, S. U.,, Evaluation on the cycle and adiabatic performance of a small multi-refrigeration system, Proceeding of the KSME, Autumn Annual Conference, 2003, pp. 769-774.
  4. Moon, J. H., Park, S. K., Oh, S. K. and Kim, Y. J.,, Development of thermal-flow analysis program for refrigerator duct systems, Proceedings of the SAREK 2003 Winter Annual Conference, 2003, pp. 393-398.
  5. Ha, J. S., Jung, K. S., Kim, T. K., Kim, K. H. and Kim, S. R.,, The effect of gasket shape on heat loss reduction in a refrigeration, Korean Journal of Air-Conditioning and Refrigeration Engineering, 2009, Vol. 21, No. 5, pp. 305-310.
  6. Ha, J.S.,, A study on the unsteady temperature characteristics at the refrigerator gasket", The Korea Society for Energy Engineering, 2012, Vol. 21, No.2, pp. 136-141. https://doi.org/10.5855/ENERGY.2012.21.2.138
  7. Yun, J. W.,, A numerical study on the flow and heat transfer characteristics in a kimchi refrigerator, Korean Journal of Air-Conditioning and Refrigeration Engineering, 2003, Vol. 15, No. 12, pp. 1078-1087.
  8. E. Vineyard, T. K. Stovall, K. E. Wilkes and K. W. Childs,, Superinsulation in refrigerator and freezers, for the recent developments in refrigerator and freezers, 1998, ASHRAE Seminar, pp 1-22.
  9. Wei-Han Tao, Chao_Ming Huang, Chuan-Liang Hsu and Jian-Yuan Lin,, Performance study of an energy-efficient display case refrigerator, Chemical Engineering Communication, 2004, Vol. 191, pp. 550-565. https://doi.org/10.1080/00986440490277983

피인용 문헌

  1. A Study on Evaluation and Improvement of Sealing Performance of Duct Cap Assembly for Ice Dispenser By Nonlinear Contact Problem Analysis vol.17, pp.2, 2018, https://doi.org/10.14775/ksmpe.2018.17.2.037