AUTHOR=Song Meiqi , Liu Xiaojing 

TITLE=Assessment of CHF and Post-CHF Heat Transfer Models for High-Pressure Condition

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2021.782086

DOI=10.3389/fenrg.2021.782086

ISSN=2296-598X

ABSTRACT=Supercritical heat transfer systems may undergo trans-critical procedures and work at subcritical conditions during startup, shutdown, or some accidents. However, well validated heat transfer models for the high-pressure condition (P/P_c>0.7) are still missing. In the present work, with exhaustive literature review, extensive experimental databanks of CHF and post-CHF heat transfer under high-pressure condition are established, respectively. Existing prediction models for the high-pressure condition are also summarized from all the world. Thereby, with the aid of the high-pressure experimental databank, prediction models get evaluated. It has been demonstrated that CHF correlations developed by Song et al. show good predictive capability, respectively. Post-dryout heat transfer could get well predicted by the Song correlation and the Bishop-1 correlation, respectively. Moreover, it is observed that as the pressure increases, CHF value drops but post-dryout heat transfer becomes better. Besides, according to literature review, so far, post-DNB heat transfer experiments for the high-pressure condition has not been carried out.