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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11115
Title: Comparative experimental study on flow boiling heat transfer characteristics of pure and mixed refrigerants
Authors: Kundu A.
Kumar R.
Gupta, Akhilesh Kumar
Published in: Energy Economics
Abstract: An experimental study is carried out to investigate the characteristics of the flow boiling heat transfer for different fluid, namely, pure refrigerant (R134a), quasi-azeotropic mixture (R410A) and zeotropic mixture (R407C). The test section is a smooth horizontal tube (7.0mm ID) uniformly heated by the resistance heating effect. The flow boiling characteristics of the refrigerants are evaluated varying: (i) the refrigerant mass velocities within the range 100-400kgm-2s-1; (ii) the heat fluxes within 3.0-10.0kWm-2; (iii) the inlet temperatures to the evaporator within 5°C-9°C. In this study, the effect on the heat transfer coefficient and two-phase pressure drop of vapor quality, mass velocity, imposed heat flux and fluid thermo-physical properties are examined in detail. Moreover, an assessment of predictive methods is provided for local heat transfer coefficients; also a direct comparison of flow regimes visualizations for refrigerants with a flow pattern map available in the literature is presented. © 2014 Elsevier Ltd and IIR.
Citation: Energy Economics (2014), 45(): 136-147
URI: https://doi.org/10.1016/j.ijrefrig.2014.05.023
http://repository.iitr.ac.in/handle/123456789/11115
Issue Date: 2014
Publisher: Elsevier
Keywords: Flow boiling
Heat transfer coefficient
Pressure drop
R134a
R407C
R410A
ISSN: 1409883
Author Scopus IDs: 56185792100
55389796000
55491955100
Author Affiliations: Kundu, A., Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee247667, India
Kumar, R., Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee247667, India
Gupta, A., Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee247667, India
Funding Details: The financial support for this research by the Institute Fund is gratefully acknowledged. Appendix A
Corresponding Author: Kundu, A.; Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeIndia
Appears in Collections:Journal Publications [ME]

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