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Laboratory evaluation of an ozone-safe non-azeotropic refrigerant mixture in a Lorenz-Meutzner refrigerator-freezer design.

Author(s) : SAND J. R., VINEYARD E. A., BAXTER V. D.

Summary

The Lorenz-Meutzner refrigerator-freezer circuit has been proposed as a design which would operate with non-azeotropic refrigerant mixtures (NARMs) and significantly increase the thermodynamic efficiency of household refrigerators. Several ozone-safe and more environmentally acceptable refrigerants are known which could be blended into a NARM to replace R12 for domestic refrigeration application. Laboratory tests were performed on a Lorenz-Meutzner (L-M) refrigerator-freezer using an R32/R124 NARM. Comparisons are made between the baseline performance of the refrigerator with R12 before it was modified to the L-M design and that of the L-M circuit operating with R12 and NARM. Small performance gains (about 3%) are seen for the NARM over R12 in the same refrigerator-freezer circuit. Modelling results and steady-state data suggest larger improvements (about 15%) are possible.

Details

  • Original title: Laboratory evaluation of an ozone-safe non-azeotropic refrigerant mixture in a Lorenz-Meutzner refrigerator-freezer design.
  • Record ID : 1994-0911
  • Languages: English
  • Source: ASHRAE Transactions 1993.
  • Publication date: 1993
  • Document available for consultation in the library of the IIR headquarters only.

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