Eventos Anais de eventos
EVR 2021
VI Escola de Verão de Refrigeração
High Levels of Heat Transfer Coefficient During Convective Flow Boiling for R134a
Submission Author:
Rhandrey Maestri , SP
Co-Authors:
Rhandrey Maestri, Guilherme Scagnolatto, Cristiano Tibiriçá
Presenter: Rhandrey Maestri
doi://10.26678/ABCM.EVR2021.EVR21-0008
Abstract
This article presents new experimental convective heat transfer coefficient during flow boiling conditions for a microscale tube. The data were obtained in a horizontal 1.0 mm inside diameter stainless-steel tube with heating length of 100 mm, R-134a as working fluid, mass velocities ranging from 1990 to 5000 kg/m²s, heat flux from 109 to 382 kW/m², heat transfer coefficient from 11.8 to 27.1 kW/m²-K. The experimental data were compared against the predictive method developed by Tibiriçá et al. (2017) and the results of the comparison are reported.
Keywords
R134a, Flow boiling, microchannels
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