Fractional scaling analysis for the thermal hydraulic behavior of pressurizer

被引：0
|
作者：
Wang, C. [1 ]
Zhang, J. [1 ]
Yan, B. H. [2 ]
机构：
[1] China Ship Dev & Design Ctr, Wuhan, Peoples R China
[2] Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai, Peoples R China
来源：
ANNALS OF NUCLEAR ENERGY | 2022年 / 165卷
关键词：
Scaling; Pressurizer; Thermal hydraulic; SINGLE-PHASE; LAWS;
D O I：
10.1016/j.anucene.2021.108663
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Pressurizer is an important component in reactor coolant system of nuclear power plant. In the integral test facility, the steam-gas pressure in prototype is usually replaced with a down-scaled nitrogen-gas pressurizer for the convenience of operation and lower cost, which results in a distortion to the simulation of pressure. Thus a precise scaling analysis of the pressurizer is very necessary. In this work, the pressure and liquid volume of a steam-gas pressurizer is analyzed with fractional scaling analysis method. The scaling ratios for the height, diameter, surge pipe, electrical heat power are obtained and analyzed. It is found that there is no contradiction between these scaling ratios. Then the distortion between the nitrogen-gas pressurizer and the steam-gas pressurizer is analyzed and discussed. Finally, some suggestions for two controversial issues, wall heat accumulation and time scale in two phase phenomenon in the pressurizer are given. (c) 2021 Elsevier Ltd. All rights reserved.
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页数：8
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