대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)

대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

이산화탄소 냉동사이클에서 사이클 사양에 따른 최적충전량 변화에 관한 실험적 연구

Experimental Study on the Variation of the optimal charge with cycle option in the $CO_2$ Refrigeration

  • 조홍현 (삼성전자 DA연구소) ;
  • 류창기 (고려대학교 기계공학과 대학원) ;
  • 이호성 (고려대학교 기계공학과 대학원) ;
  • 김용찬 (고려대학교 기계공학과)
  • Cho, Hong-Hyun (DA R&D Center, Samsung Electronics Co. LTD) ;
  • Ryu, Chang-Gi (Graduate School of Mechanical Engineering, Korea University) ;
  • Lee, Ho-Seong (Graduate School of Mechanical Engineering, Korea University) ;
  • Kim, Yong-Chan (Department of Mechanical Engineering, Korea University)
  • 발행 : 2005.11.25
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초록

The cooling performance of a transcritical $CO_2$ cycle varies significantly with a variation of refrigerant charge amount. In this study, the performance of the $CO_2$ system was measured and analyzed by varying refrigerant charge amount with a change of cycle option. The applied cycle options are the single-stage compression system, two-stage compression with 1-EEV system, and two-stage compression with 2- EEV system. The optimum normalized charge were 0.363, 0.297, and 0.282 for the two-stage compression with 2-EEV system, two-stage compression with 1-EEV system, and single-stage compression system, respectively.

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