This study seeks to analyze and explore experimental methods to study condensation heat transfer in micro- and mini-channel. Following, an experimental setup was built and initial results are presented. Several experimental techniques were reviewed, while two, thermoelectric coolers and a copper-heat-flux-sensor were analyzed in detail for condensation heat flux. It was concluded that thermoelectric coolers were not suitable as heat flux sensors for single-phase validation, but the copper-heat-flux-sensor was appropriate to measure heat transfer coefficients at the mini-scale. Condensation heat transfer coefficients were obtained experimentally in seven parallel square mini-channels of diameter 1mm. Existing condensation correlations were applied to these data; micro- and mini-scale correlations captured the appropriate trends, but the macro-scale Shah (1979) correlation fit the data best.
- Heat Transfer Division
Exploration of Experimental Techniques to Determine the Condensation Heat Flux in Microchannels and Minichannels
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Derby, MM, Lee, HJ, Craft, RC, Michna, GJ, Peles, Y, & Jensen, MK. "Exploration of Experimental Techniques to Determine the Condensation Heat Flux in Microchannels and Minichannels." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 2. Washington, DC, USA. August 8–13, 2010. pp. 169-176. ASME. https://doi.org/10.1115/IHTC14-22647
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