Experiments on the basic behavior of supercritical CO2 natural circulation

被引：17
|
作者：
Liu, Guangxu [1 ]
Huang, Yanping [1 ]
Wang, Junfeng [1 ]
Lv, Fa [1 ]
Leung, Laurence K. H. [2 ]
机构：
[1] Nucl Power Inst China, CNNC Key Lab Nucl Reactor Thermal Hydraul Technol, Beijing, Peoples R China
[2] Canadian Nucl Labs, 286 Plant Rd, Chalk River, ON, Canada
来源：
NUCLEAR ENGINEERING AND DESIGN | 2016年 / 300卷
关键词：
HEAT-TRANSFER; STEADY-STATE; CARBON-DIOXIDE; FLOW; STABILITY; INSTABILITIES; PERFORMANCE; PRESSURES; SYSTEM; LOOP;
D O I：
10.1016/j.nucengdes.2016.01.021
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：
To study the steady-state characteristics of supercritical carbon dioxide natural circulation, experiments were carried out in a simple rectangular loop with vertically placed heating section. The effects of system pressure and inlet temperature on the system behavior were also investigated. No instabilities were found in the present experiments. The maximum of mass flow rate was obtained at a heating section outlet temperature much higher than the pseudo-critical temperature. The maximum value of mass flow rate increased with system pressure just as in two-phase natural circulation systems. Inlet temperature significantly affected the steady-state characteristics of supercritical carbon dioxide natural circulation system. A small temperature difference of 14 degrees C in the natural circulation system could induce a mass flow rate with considerably high Re up to 9.1 x 10(4), which indicates the potential for supercritical carbon dioxide to be used as a high efficient natural circulation working fluid. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：376 / 383
页数：8
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