Local subcooled flow boiling model assessment and development

Ronald D. Boyd; Xiaowei Meng; Alvin Smith; Jerry Turknett

doi:10.1117/12.163802

12 November 1993 Local subcooled flow boiling model assessment and development

Ronald D. Boyd, Xiaowei Meng, Alvin Smith, Jerry Turknett

Proceedings Volume 1997, High Heat Flux Engineering II; (1993) https://doi.org/10.1117/12.163802
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Several existing heat transfer models for uniformly heated channels were examined for: (1) accurate representation of the boiling curve, and (2) characterizing the local heat transfer under high heat flux (HHF) conditions. Comparisons with HHF data showed that major correlation modifications were needed in the subcooled partial nucleate boiling (SPNB) region. Since the slope of boiling curve in this region is important to assure continuity of the HHF trends into the fully developed boiling region and up to the critical heat flux, accurate characterization in the SPNB region is essential. Approximations for the asymptotic limits for the SPNB region have been obtained and have been used to develop an improved composite correlation. The developed correlation has been compared with 365 water and 155 freon-11 data points. For the local heat transfer coefficient and wall temperature, the over-all percent standard deviation with respect to the data was 19% and 3%, respectively, for the high velocity water data.

Citation Download Citation

Ronald D. Boyd, Xiaowei Meng, Alvin Smith, and Jerry Turknett "Local subcooled flow boiling model assessment and development", Proc. SPIE 1997, High Heat Flux Engineering II, (12 November 1993); https://doi.org/10.1117/12.163802

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