Steam condensation separate effect tests in core make-up tank

Zhu, Mingzhang; Chang, Ho; Wang, Han; Zhu, Qingzi; Wang, Jiapeng

doi:10.1016/j.pnucene.2021.104031

Cited by 3 publications

(1 citation statement)

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“…Chen et al (2019) carried out a visualized study on DCC in convergent nozzle over a wide range of operating conditions, discussing in detail the steam plume shape, penetration length, and average heat-transfer coefficient, by means of fitting measured data, they presented empirical correlations for dimensionless penetration length and average heat transfer coefficient as a function of dimensionless steam mass flux and condensation driving potential. Zhu et al (2021) experimentally studied DCC in core make-up tank (CMT) in AP-series nuclear power plants, in order to reveal that the CMT behavior was affected by different factors including pressure, non-condensable gas, and thermal resistance. Wang et al (2021a) experimentally studied the temperature and pressure oscillation induced by DCC in a porous injector, and through the experimental data, they found that the porous inner-structure suppressed the pressure oscillation by increasing the viscous resistance and inertia resistance of the steam-water flow.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on heat transfer characteristics of steam underwater direct-contact condensation

Chen

Hui²,

Li³

et al. 2023

Front. Therm. Eng.

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Introduction: The direct-contact condensation (DCC) of steam under water injection is the basic thermodynamic process of the bubble deaerator. In order to understand the complex coupling behavior of strong turbulence and fast phase-change heat transfer involved in the process.Methods: This study uses a visualized method and convective heat transfer model.Results: Since the contact area is affected by steam injection flow and sub-cooled degree is affected simultaneously, the trend of the condensation heat-transfer coefficient depends on the degree of their respective effects under each condition, and the maximum variation of the coefficient exceeds 104 W/m2.°C. Moreover, they still effect the period of steam plume, and the maximum variation of the period was beyond 80 ms.Discussion: Calculated the average condensation heat transfer coefficient and then produces the variation law of heat transfer coefficient under various conditions in one steam plume evolution period.

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Section: Introductionmentioning

confidence: 99%