Experimental studies and computational benchmark on heavy liquid metal natural circulation in a full height-scale test loop for small modular reactors
| Autor: | Jaehyun Cho, Heejae Ju, Ju-Eun Lee, Hyunyub Noh, Yong-Hoon Shin, Il Soon Hwang, Sungjune Sohn, Yeji Kim |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Nuclear and High Energy Physics
Engineering Liquid metal Steady state Adiabatic wall business.industry 020209 energy Mechanical Engineering Mechanical engineering 02 engineering and technology Mechanics 01 natural sciences 010305 fluids & plasmas Natural circulation Nuclear Energy and Engineering 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Mass flow rate General Materials Science Boundary value problem Safety Risk Reliability and Quality Adiabatic process business Waste Management and Disposal Eutectic system |
| Zdroj: | Nuclear Engineering and Design. 316:26-37 |
| ISSN: | 0029-5493 |
| DOI: | 10.1016/j.nucengdes.2017.03.001 |
| Popis: | In order to test the enhanced safety of small lead-cooled fast reactors, lead-bismuth eutectic (LBE) natural circulation characteristics have been studied. We present results of experiments with LBE non-isothermal natural circulation in a full-height scale test loop, HELIOS (heavy eutectic liquid metal loop for integral test of operability and safety of PEACER), and the validation of a system thermal-hydraulics code. The experimental studies on LBE were conducted under steady state as a function of core power conditions from 9.8 kW to 33.6 kW. Local surface heaters on the main loop were activated and finely tuned by trial-and-error approach to make adiabatic wall boundary conditions. A thermal-hydraulic system code MARS-LBE was validated by using the well-defined benchmark data. It was found that the predictions were mostly in good agreement with the experimental data in terms of mass flow rate and temperature difference that were both within 7%, respectively. With experiment results, an empirical relation predicting mass flow rate at a non-isothermal, adiabatic condition in HELIOS was derived. |
| Databáze: | OpenAIRE |
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