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dc.contributor.authorJavidmand, Puya
dc.contributor.authorHoffmann, Klaus A.
dc.date.accessioned2016-06-14T19:21:34Z
dc.date.available2016-06-14T19:21:34Z
dc.date.issued2015
dc.identifier.citationJavidmand, Puya; Hoffmann, Klaus A. 2015. Numerical-based comparison among critical flow properties of HFC-134a and its new alternatives HFO-1234yf and HFO-1234ze through short-tube orifices. ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels San Francisco, California, USA, July 6–9, 2015en_US
dc.identifier.isbn978-0-7918-5687-1
dc.identifier.otherWOS:000374197900071
dc.identifier.urihttp://dx.doi.org/10.1115/ICNMM2015-48048
dc.identifier.urihttp://hdl.handle.net/10057/12084
dc.descriptionClick on the DOI link to access the article (may not be free).en_US
dc.description.abstractAlthough HFC-134a is a common refrigerant for residential and mobile refrigeration systems, investigators are dealing with replacing it with new alternatives because of its harmful environmental and global warming effects. Recently HFO-1234yf and HFO-1234ze have been introduced as suitable alternative refrigerants because they have zero ozone depletion potential (ODP) and low global warming potential (GWP) and possess thermophysical properties similar to those of HFC-134a. Because there is no experimental data on the performance of these new refrigerants in capillary tubes and short-tube orifices, a recently developed numerical model for analysis of critical two-phase flow through these tubes is used to predict the critical mass flow rate and pressure distribution of HFO-1234yf and HFO-1234ze under various operating conditions. The applied numerical model is based on a comprehensive two-fluid model including the effects of two-phase flow patterns and liquid-phase metastability. The numerical method has been validated by comparing numerical results of the critical flows of HFC-134a, R-410A, and HCFC-22 with available experimental data. The developed numerical simulation is applied in order to develop comparison and selection charts for short-tube orifices based on the common refrigerant HFC-134a and the alternative new refrigerants HFO-1234yf and HFO-1234ze.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Society of Mechanical Engineersen_US
dc.relation.ispartofseriesASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels;
dc.subjectAdiabatic capillary tubesen_US
dc.subjectRefrigerant mass-flowen_US
dc.subjectNeural-network correlationen_US
dc.subjectCritical 2-phase flowen_US
dc.subjectGeneralized correlationen_US
dc.subjectModelen_US
dc.subjectPerformanceen_US
dc.subjectMixturesen_US
dc.subjectPressureen_US
dc.subjectR1234yfen_US
dc.titleNumerical-based comparison among critical flow properties of HFC-134a and its new alternatives HFO-1234yf and HFO-1234ze through short-tube orificesen_US
dc.typeConference paperen_US
dc.rights.holderCopyright © 2015 by ASMEen_US


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  • AE Research Publications [101]
    Research publications authored by the Department of Aerospace Engineering faculty and graduate students.

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