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=9

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=<p>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 (<inline-formula id="inf1"><mml:math id="m1" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>P</mml:mi><mml:mo>/</mml:mo><mml:msub><mml:mi>P</mml:mi><mml:mtext>c</mml:mtext></mml:msub><mml:mo>&gt;</mml:mo><mml:mn>0.7</mml:mn></mml:mrow></mml:math></inline-formula>) are still missing. In the present work, with exhaustive literature review, extensive experimental databanks of CHF and post-dryout heat transfer under high-pressure condition are established, respectively. Existing prediction models for the high-pressure condition are also summarized from all over the world. Thereby, with the aid of the high-pressure experimental databank, prediction models get evaluated. It has been demonstrated that CHF correlation developed by Song et al. shows good predictive capability. Post-dryout heat transfer could get well predicted by the Song correlation. These recommended prediction models could be implemented to upgrade safety analysis codes for simulation of trans-critical transients.</p>