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A Study on the Heat Loss Reduction of a Refrigerator by Thermal Conductivity Change and Partial Removal of Rubber Magnet

냉장고 가스켓 주위 고무자석 재질 및 형상 변경에 따른 열손실 개선 연구

  • Ha, Ji Soo (Department of Mechanical and Automotive Engineering, Keimyung University) ;
  • Ahn, Won Sul (Department of Chemical Engineering, Keimyung University)
  • 하지수 (계명대학교 기계자동차공학과) ;
  • 안원술 (계명대학교 화학공학과)
  • Received : 2014.09.05
  • Accepted : 2014.11.28
  • Published : 2014.12.31

Abstract

The present study has been carried out to reduce the heat loss from a refrigerator by changing thermal conductivity and partial removal of rubber magnet near refirgerator gasket. To perform this purpose, two dimensional heat transfer analysis for the horizontal cross sectional plane of a refrigerator has been accomplished. From the present study, it could be seen that the heat loss could be reduced nearly 7% by changing thermal conductivity of rubber magnet from 10W/mK to 1W/mK. The heat loss reduction, 17%, could be achieved by removal of rubber magnet near hotline and the effect on the heat loss reduction by partial removal of rubber magnet might be helpful for the refrigerator power consumption.

본 연구는 냉장고의 본체와 냉장고 문 사이에 있는 가스켓 주위에 냉장고 본체와 문의 밀착을 위해 설치하는 고무자석의 재질과 형상을 변경하여 냉장고 열손실을 개선하는 것을 목적으로 하였다. 냉동실과 냉장실을 포함한 냉장고 수평 단면에 대하여 가스켓 주위에 대한 열전달 해석을 수행하였다. 본 연구를 통해 가스켓 내부와 Hotline 옆의 고무자석의 열전도율을 기존 10W/mK에서 1W/mK로 변화하면 냉장고 열손실이 약 7% 저감되고 Hotline 옆의 고무자석을 제거하고 대신에 철판을 설치하면 냉장고의 열손실을 약 17% 저감 되는 것을 알 수 있었으며 Hotline 옆의 고무자석을 제거하고 대신에 철판을 설치하는 것이 냉장고 열손실에 큰 효과가 있음을 알 수 있었다.

Keywords

References

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Cited by

  1. A Study on Magnetic Property Improvement of Rubber Magnets for Heat Loss Reduction of a Refrigerator vol.51, pp.1, 2016, https://doi.org/10.7473/EC.2016.51.1.38