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On the optimum interstage parameters for CO2 transcritical systems.

Author(s) : MANOLE D.

Summary

The search for environmentally-friendly refrigerants in systems with low LCCP calls for the use of natural refrigerants like CO2, ammonia, and hydrocarbons. In order to match the efficiency of R-134a or R-22 refrigeration systems, the natural refrigerants require more complex system configurations. Part of the solution to designing refrigeration systems using transcritical refrigerants is the use of two-stage compression compressors. The increased system complexity adds at least two more variables to the thermodynamic optimization of the refrigeration cycle: the interstage pressure and temperature. The study does a review of the current practices in selecting the interstage pressure and temperature values and then points out the potential to further increase the system efficiency. Experimental data are used to further tune the analytical results used to make recommendations on selecting the intermediate pressure in two-stage compression refrigeration systems.

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Pages: 2006-2

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Details

  • Original title: On the optimum interstage parameters for CO2 transcritical systems.
  • Record ID : 2007-1433
  • Languages: English
  • Source: 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
  • Publication date: 2006/05/29

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