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Investigation on the optimal control of gas cooler pressure for a CO2 refrigeration system with an internal heat exchanger.

Author(s) : LI Z., ZHAO D., DING G., et al.

Type of article: Article, IJR article

Summary

CO2 is one of good refrigerants considering the environmental and safe issues. However, its control is amuch more complicated problem compared to the conventional refrigerants. Most of the previous studies have applied regressive approach to this problem, but it requires large amount of effort and cost.This study deals with issues on controlling CO2 refrigeration system and developing new control method. In this study, the performance characteristics of a CO2 refrigeration systemwere investigated considering refrigerant charge amount and a novel realtime control method proposed by Kim and Kim (2012) was validated.Through the validation, the real-time controller showed acceptable estimation performance even in case of insufficient refrigerant charge. In addition, a newconcept of control analysiswas devised considering gas cooler performance. This approach helps the comprehensive understanding of determination mechanism to achieve maximum coefficient of performance, which is applicable to
develop a new control method.

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Format PDF

Pages: 48-59

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Details

  • Original title: Investigation on the optimal control of gas cooler pressure for a CO2 refrigeration system with an internal heat exchanger.
  • Record ID : 30022280
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 77
  • Publication date: 2017/05
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2017.03.002

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