ShareEvaluation 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.
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Indexing
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- Date : 1991/08/10
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- Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
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