Design and development of high-temperature tribometer for material testing in liquid sodium environment

Author(s):  
Hemant Kumar ◽  
S. Vijayaraghavan ◽  
Shaju K. Albert ◽  
A.K. Bhaduri ◽  
K.K. Ray
2020 ◽  
Vol 89 ◽  
pp. 29-36 ◽  
Author(s):  
Xiaoda Song ◽  
Yuting Yi ◽  
Li Liu ◽  
Mengjiao He ◽  
Siwei Deng ◽  
...  

2011 ◽  
Vol 7 ◽  
pp. 609-615 ◽  
Author(s):  
M. Shanmugavel ◽  
S. Vijayaraghavan ◽  
P. Rajasundaram ◽  
T. Chandran ◽  
M. Shanmugasundaram ◽  
...  

2018 ◽  
Author(s):  
M. S. Prowant ◽  
G. Dib ◽  
H. Qiao ◽  
M. S. Good ◽  
M. R. Larche ◽  
...  

2018 ◽  
Vol 207 ◽  
pp. 04004
Author(s):  
Radovan Nosek ◽  
Tatiana Liptáková ◽  
Libor Trško ◽  
Zuzana Kolková ◽  
Milan Malcho ◽  
...  

You Heat pipe is a high efficiency heat transfer element, depends on the evaporation, condensation and circulation of inside working fluid. The working fluid of a high temperature pulsating heat pipe is generally alkali metals, and sodium heat pipe can operate in range of 500-1100°C. In order to investigate terminal velocity of working fluid, the glass pulsating heat pipe was produced for experimental purposes. The experiment was carried out, in order to simulate real operating conditions in range of 500-1100°C. Sudden boiling of liquid sodium (b.p. = 883°C at 1 atm) inside the all quartz-made heat pipe results in high-temperature reaction of sodium vapour with the inner wall surface. The reaction became more aggressive with increasing vapour temperature and resulted in heat pipe explosion. The evaluation of damage character is analysed in this paper.


1995 ◽  
Vol 110 (2) ◽  
pp. 159-167 ◽  
Author(s):  
Akihiro Oto ◽  
Nobuyuki Naohara ◽  
Masayoshi Ishida ◽  
Toshitaka Kuroki ◽  
Kenji Katsuki ◽  
...  

Author(s):  
Kang-wei Peng ◽  
Zhi-gang Zhang ◽  
Ming Guo ◽  
Chao Wang ◽  
Shu-bin Sun

In the operation of sodium-cooled fast reactor, accident caused by the leakage and combustion of liquid sodium is common, and it is a pivotal and difficult problem in research, construction and operation of sodium-cooled fast reactor internationally. In actual operation of sodium-cooled fast reactor, liquid sodium in sodium fire accident is difficult to form fog but mainly in columnar flow form due to low operation pressure and thermal insulation material wrapping the pipe, so experimental research about columnar fire is of much more practical significance. This paper focuses on combustion property on sodium column fire in the sodium-cooled fast reactor. Liquid sodium with high temperature will be poured into the combustion room via pouring high pressure nitrogen into sodium storage tank when solid sodium has been heated to enactment temperature; liquid sodium with high temperature will burn at combustion room with air forming sodium column fire. Initial temperature of sodium jet is about 200°C in experiment and spurt pressure is 0.2MPa, spurt flow is about 0.4–0.6m3 each hour. Temperature fields in combustion tank space and the catch plate in the bottom are measured through dozens of thermocouple distributed in combustion tank. No atomization phenomenon would exist in the pure sodium columnar fire in the space, the atomized fire triggered by splashed sodium from sodium stream striking the admittance plat and generate more than the high temperature of 900°C.


2009 ◽  
Vol 620-622 ◽  
pp. 229-232
Author(s):  
Yeong Seok Yoo ◽  
Kyeong Ho Cheon ◽  
Jae Ik Lee ◽  
Hyo Jin Ban ◽  
Gyu Tae Seo

Zeolite has been used as catalyzer, absorbent, ion-exchange matter and dehydrating agent due to its excellent catalytic property and ion-exchange. In recent years, many studies have been conducted to apply zeolite as new materials such as zeolite membranes and zeolite sensor films. To introduce properties of zeolite, it should be examined how zeolite could be reacted other materials. In this study, it is investigated whether zeolite is successfully synthesized or not when clay and/or sewage sludge coexist with zeolite precursor. Zeolite precursor was made of liquid sodium silicate and sodium aluminate. Mixing ratio of caly and/or sewage sludge is 0-10%(wt.). To compare two processes, the mixture was synthsized by hydrothermal method and high temperature sintering process. It is synthesized by hydrothermal with sintering at high temperature process. The resulting materials were characterized by XRD and SEM. As a result, various type of zeolite such as zeolite X, zeolite A and zeolite P1 was successfully synthesized by hydrothermal method when clay and/or sewage coexist with zeolite precursor. However, zeolite was rarely synthesized by high temperature sintering process. Therefore, when preperation of zeolite material mixed with other material such as clay and sewage sludge, hydrothermal method is more effective than sintering at high temperature process.


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