Share

Evaluation of performance and composition shift of zeotropic mixtures in a Lorenz-Meutzner refrigerator/freezer.

Author(s) : BASKIN E., SMITH N. D., DELAFIELD F. R., et al.

Summary

The paper presents the Lorenz-Meutzner refrigerator/freezer equipped with a 1060 Btu/h compressor, two evaporators, and two intercoolers, that was experimentally tested in an environmental chamber, using several hydrofluoropropane-based zeotropic mixtures. Hydrofluorocarbons R245ca/R152a performed comparably to R134a, R245ca/hydrocarbon R270 (cyclopropane) outperformed all zeotropic mixtures and R134a by at least 12.2 plus or minus 7%. Refrigerant samples taken during refrigerator/freezer operation revealed substantial composition shifts. Lorenz and Meutzner (1975) stated that the following parameters influence the optimum performance of the design: (1) heat exchanger size, (2) capillary tube length, (3) refrigerant charge, and (4) compressor size. This work investigates three of these parameters.

Details

  • Original title: Evaluation of performance and composition shift of zeotropic mixtures in a Lorenz-Meutzner refrigerator/freezer.
  • Record ID : 2000-1860
  • Languages: English
  • Source: ASHRAE Transactions. 1999 Winter Meeting, Chicago, Illinois + CD-ROM.
  • Publication date: 1999
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles from the proceedings (54)
See the conference proceedings

Indexing