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Analysis of an ejector expansion device in a transcritical CO2 air-conditioning system.

Author(s) : LI D. Q., GROLL E. A.

Summary

A two-phase flow ejector model was developed and validated using experimental results. An ejector expansion transcritical CO2 air-conditioning system simulation model was developed by incorporating the two-phase flow ejector model into an existing transcritical CO2 air-conditioning system simulation model. Parametric studies were performed to investigate the effects of ejector design parameters on the system performance of an US military environmental control unit for varying operating conditions. It was found that when both systems have the same gas cooler, evaporator and compressor, the ejector expansion system could have 11% higher COP and a 9.5% higher cooling capacity over the basic transcritical system.

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Pages: 2006-2

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Details

  • Original title: Analysis of an ejector expansion device in a transcritical CO2 air-conditioning system.
  • Record ID : 2007-1548
  • Languages: English
  • Source: 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
  • Publication date: 2006/05/29

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