Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Operating Number Control of Compressors Based on Cooperative Logic for a High Efficiency Centrifugal Water Chiller

터보냉동기의 고효율 운전을 위한 협조 방식 기반의 압축기 대수제어

  • Jeong, Seok-Kwon (Dept. of Refrigeration and Air-Conditioning Engineering, Pukyong National University) ;
  • Lim, Seung-Kwan (Graduate School of Refrigeration and Air-Conditioning Eng. Pukyong National University) ;
  • Ryu, Keon-Su (Hi Air Korea R&D Center)
  • 정석권 (부경대학교 냉동공조공학과) ;
  • 임승관 (부경대학교 대학원 냉동공조공학과) ;
  • 류근수 (하이에어코리아(주) 기술연구소)
  • Received : 2014.11.24
  • Accepted : 2015.02.09
  • Published : 2015.05.10
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Abstract

This paper discusses compressors operating number control strategy using cooperative logic to cope with variable partial load for high efficiency of a centrifugal water chiller. The cooperative logic is composed of a speed-up and speed-down controller, enabling smooth operation of compressors and equivalent distribution of thermal load in each compressor. This centrifugal water chiller design can be operated with high efficiency without incurring excessive energy waste and large transient phenomena at partial load states. Simulations in MATLAB and experiments in a real chiller system were conducted and verified the high efficiency control of a centrifugal water chiller achieved by the suggested strategy.

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References

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