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Experimental investigation and optimization of a cascade cycle.

Number: pap. n. R7, 2492

Author(s) : DI NICOLA G., DI NICOLA C., MOGLIE M., et al.

Summary

Refrigerating units operating with cascade cycles are considered a convenient solution in terms of safety and cost for applications demanding very low temperatures. The principle behind the cascade system relies on connecting two compression cycles via an intermediate heat exchanger and its theoretical performance justifies experimental trials.The aim of the present work was to quantify the performance of a cascade refrigeration cycle using CO2 in the LTS and R404a in the HTS cycle. From the experimental data obtained an optimization procedure is performed using the Response Surface Methodology (RSM). Response surface methodology is able to identify the influence of each input variables to the output variables, which in this case are the coefficient of performance and the energy absorbed by the compressor at different working condition. The surfaces obtained are then used for a multi-objective optimization for the identification of those working conditions that guarantee the maximization of the coefficient of performance and the minimization of the energy required by the compressors.

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Pages: 7 p.

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Details

  • Original title: Experimental investigation and optimization of a cascade cycle.
  • Record ID : 30000575
  • Languages: English
  • Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2010/07/12

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