• Title/Summary/Keyword: Sub-cooled hybrid condenser

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Performance Characteristics of Sub-Cooled Hybrid Condenser in Automotive Air-Conditioning System (자동차 공조시스템에서 건조기 일체형 응축기의 성능특성)

  • 김경훈;김석우
    • Transactions of the Korean Society of Automotive Engineers
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    • v.12 no.5
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    • pp.205-210
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    • 2004
  • Sub-cooled hybrid condenser(SCHC) which have been developed through this study is an appliance of integrating a condenser with a receiver dryer, which were previously separated. It is supposed that the development of sub-cooled hybrid condenser will be able to reduce not only weight, size, production process and cost, but also quite improve in capability, which will be of great use for the technological development and research of an air conditioning system whose importance is higher in a car. Through the present study it was found that the developed SCHC increases in the degree of sub-cooling by 10∼100% compared to conventional condenser. The excessive sub-cool has improved the cooling performance by 10%, and that leads to the reduction in evaporator outlet air temperature $1.5^{\circ}C$. Additionally, it is expected that sub-cooled hybrid condenser weights less by 100g than the previous condensers which has equal super heat.

Development on the Sub-Cooled Hybrid Condenser in Automotive Air-Conditioning System (자동차 냉방시스템에서 건조기 일체형 응축기 개발)

  • 김경훈;장주섭;박종일
    • Transactions of the Korean Society of Automotive Engineers
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    • v.11 no.5
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    • pp.70-76
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    • 2003
  • An experimental study was performed to understand the heat transfer and fluid dynamic characteristics of Sub-Cooled Hybrid Condenser (SCHC), which conventional condenser and receiver dryer are integrated into. SCHC also employs a sub-cooled refrigerant passages at the end of the condenser in order to supply perfect liquid refrigerant to the expansion unit. Throughout the present study, it was found that the developed SCHC increases in the degree of sub-cooling by 10~100% compared to conventional condenser. The excessive sub-cooling has improved the cooling performance by 10%, and that leads reduction in evaporator outlet air temperature by $1.5^{\circ}C$. Also found through the study is that the refrigerant pressure drop across SCHC is fairly increased due to insertion of the desiccant cartridge in the receiver tank which is composed of zeolite, filter and supporter plate.