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A correlation-free on-line optimal control method of heat rejection pressures in CO2 transcritical systems.

Author(s) : ZHANG W. J., ZHANG C. L.

Type of article: Article, IJR article

Summary

This paper proposes a novel correlation-free on-line optimal control method for CO2 transcritical refrigeration systems. It uses the on-line correction formula to track the optimal pressure set point. As a critical advantage against the existing empirical correlations of the heat rejection pressure, it is independent of the cycle, the system specifications, and the operating conditions. Dynamic numerical simulation demonstrates how to apply the new method to a basic CO2 transcritical refrigeration system. The results show that the proposed method can well track the optimal pressures and is robust to resist the sampling noise.

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Pages: 844-850

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Details

  • Original title: A correlation-free on-line optimal control method of heat rejection pressures in CO2 transcritical systems.
  • Record ID : 30000476
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 4
  • Publication date: 2011/06

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