This paper describes a new experimental apparatus for the measurement of the local heat transfer coefficient during flow boiling inside a 0.96 mm internal diameter single round cross section minichannel and reports preliminary heat transfer data taken during flow boiling of R134a. As a peculiar characteristic of the present technique, the heat transfer coefficient is not measured by imposing the heat flux; instead, the boiling process is governed by controlling the inlet temperature of the heating secondary fluid. This paper also presents a methodology to determine the critical conditions during the flow boiling process when no heat flux is imposed.
- Heat Transfer Division
Flow Boiling Inside a Single Circular Minichannel: Measurement of Local Heat Transfer Coefficient
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Cavallini, A, Bortolin, S, Del Col, D, Matkovic, M, & Rossetto, L. "Flow Boiling Inside a Single Circular Minichannel: Measurement of Local Heat Transfer Coefficient." Proceedings of the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 1. Vancouver, British Columbia, Canada. July 8–12, 2007. pp. 901-909. ASME. https://doi.org/10.1115/HT2007-32492
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