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Development and validation of a CO2 gas cooler moving-boundary model.

Number: pap. 1166

Author(s) : BAHMAN A., ZIVIANI D., GROLL E. A.

Summary

This paper presents the development of a CO2 gas cooler model using the moving-boundary method. The model aims to separate the gas cooler into two regions: supercritical gas and supercritical liquid by means of the CoolProp thermophysical property library (Bell et al., 2014). The model uses the latest correlations for refrigerant and air-side heat transfer coefficients and pressure drops. The experimental results from Ge and Cropper (2009) are used for model validation. A total of at 36 operating conditions have been reported. The model predicted the gas cooler heating capacity within an MAE of ±4.7% and refrigerant side outlet temperature within ±3 K. The present moving-boundary model also showed an improved agreement compared to the segment-by-segment model proposed by Ge and Cropper (2009).

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Pages: 8

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Details

  • Original title: Development and validation of a CO2 gas cooler moving-boundary model.
  • Record ID : 30023608
  • Languages: English
  • Source: 13th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
  • Publication date: 2018/06/18
  • DOI: http://dx.doi.org/10.18462/iir.gl.2018.1166

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