Characteristics of Energy Consumption for a Household Refrigerator under Influence of Non-condensable Gases

가정용 냉장고의 불응축 가스량에 따른 소비 전력 특성

  • Kim, Doo-Hyun (Department of Mechanical Engineering, Pusan National University) ;
  • Hwang, Yu-Jin (Department of Mechanical Engineering, Pusan National University) ;
  • Park, Jae-Hong (Department of Mechanical Engineering, Pusan National University) ;
  • Chung, Seong-Ir (Department of Mechanical Engineering, Pusan National University) ;
  • Jeong, Young-Man (Department of Mechanical Engineering, Pusan National University) ;
  • Ku, Bon-Cheol (Department of Mechanical Engineering, Pusan National University) ;
  • Lee, Jae-Keun (Department of Mechanical Engineering, Pusan National University) ;
  • Ahn, Young-Chull (School of Architecture, Pusan National University) ;
  • Bang, Sun-Wook (Digital Appliance Research Laboratory, LG Electronics Inc) ;
  • Kim, Seok-Ro (Digital Appliance Research Laboratory, LG Electronics Inc)
  • 김두현 (부산대학교 기계공학과) ;
  • 황유진 (부산대학교 기계공학과) ;
  • 박재홍 (부산대학교 기계공학과) ;
  • 정성일 (부산대학교 기계공학과) ;
  • 정영만 (부산대학교 기계공학과) ;
  • 구본철 (부산대학교 기계공학과) ;
  • 이재근 (부산대학교 기계공학과) ;
  • 안영철 (부산대학교 건축학부) ;
  • 방선욱 (LG전자(주) 디지털어플라이언스 사업본부) ;
  • 김석로 (LG전자(주) 디지털어플라이언스 사업본부)
  • Published : 2008.06.10

Abstract

The presence of non-condensable gases as an additional thermal resistance inside a refrigerating circuit has been found for a general refrigerator, The effect of non-condensable gases was varied by controlling the injection amount of dry air into the refrigerating circuit to increase a thermal resistance. Energy consumption tests for the refrigerator were conducted under the various amounts of non-condensable gases. The tested refrigerating circuit was the household refrigerator. As the molar fraction of non-condensable gases was increased from 0% to 1.46%, the amount of energy consumption was found to increase up to 25%. The increase of the amount of non-condensable gases in refrigerating circuit was found to result in increasing the condensation temperature at the condenser and decreasing the evaporation temperature at the evaporator, which were presumably caused by the low specific heat and increased partial pressure of non-condensable gas.

Keywords

References

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