Heat Transfer In Nucleate Boiling Of R134a/R152a Mixtures

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Review of Recent Research on Boiling and Condensation Heat

* the main reasons for the degradation of heat transfer with mixtures, * the circumferential variation of the wall temperature for flow boiling of mixtures inside horizontal tubes, * the suppression of nucleate boiling, * the improved peak heat flux, * and some mode 1 s for boi 1 i ng or evaporat i on of mixtures.

6 III March 2018 http://doi.org/10.22214/ijraset.2018

The effect of the size of the nanoparticles on heat transfer in mixtures of refrigerant, oil, and nanoparticles is investigated experimentally with R113, VG68 oil and Cu particles with diameters of 20, 50 and 80 nm. The results show a maximum increase of 23.8 % in the heat transfer coefficient in a pool nucleate boiling with reduced