Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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A Comparison of Operating Characteristics for Industrial Water Cooler with Variation of Control Methods

제어방식에 따른 산업용 수냉각기의 운전 특성 비교

  • Baek, Seung-Moon (Department of Refrigeration and Airconditioning Engineering, Pukyong National University)
  • 백승문 (부경대학교 냉동공조공학과)
  • Received : 2014.11.01
  • Accepted : 2014.12.01
  • Published : 2014.12.31
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Abstract

This paper presents a comparison of operating characteristics for industrial water cooler with variation control methods. The performance analysis regarding the characteristics of condensation capacity, evaporation capacity, compressor load, COP of an on-off type cooler, a hot gas-bypass control type cooler and an inverter control type cooler with respect to the system load is reviewed, respectively. The primary results are as following: the variation of required compressor load of an on-off type cooler with respect to load is 5%, that of hot gas-bypass type is 18% and 66% for an inverter control type cooler. As the result shows, an inverter control type yields relatively huge difference of required compressor load compared to other types of control system. In terms of partial load, COP of an inverter control type cooler presents the highest value, and is considered as the optimized type for the used of the system involving frequent partial load.

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References

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