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HEAT EXCHANGER THERMAL PERFORMANCE FOR TWO NON-AZEOTROPIC REFRIGERANT MIXTURES.
Author(s) : CONKLIN J. C., VINEYARD E. A.
Summary
TWO NON-AZEOTROPIC REFRIGERANT MIXTURES, THE FIRST CONSISTING OF 71% R22 AND 29% R114 AND THE SECOND CONSISTING OF 75% R143A AND 25% R124 WERE STUDIED AT VARIOUS MASS FLOW RATES AND HEAT LOADS IN AN EXPERIMENTAL APPARATUS AT OAK RIDGE NATIONAL LABORATORY. THE MEASURED THERMAL PERFORMANCE OF THE EVAPORATOR AND THE CONDENSER ARE PRESENTED IN TERMS OF THE NUMBER OF TRANSFER UNITS AND EFFECTIVENESS. BECAUSE THE STANDARD ANALYSIS IS VALID ONLY FOR CONSTANT SPECIFIC HEAT FLUIDS, AN ANALYSIS THAT CONSIDERS VARIABLE SPECIFIC HEAT FLUIDS IS USED TO COMPARE ANALYTICAL PREDICTIONS OF THE THERMAL PERFORMANCE WITH THE OBSERVED THERMAL PERFORMANCE. THE PREDICTED AND MEASURED RESULTS SHOW VERY GOOD AGREEMENT WHEN THE PRESSURE DROP IS LOW.
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Details
- Original title: HEAT EXCHANGER THERMAL PERFORMANCE FOR TWO NON-AZEOTROPIC REFRIGERANT MIXTURES.
- Record ID : 1992-2108
- Languages: English
- Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
- Publication date: 1991/08/10
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
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Themes:
CFCs;
HCFCs;
HFCs;
Blends - Keywords: R143a; R114; R22; R124; Performance; Modelling; Zeotropic mixture; Evaporator; Refrigerant; Condenser
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