Pulsational characteristics of the natural-circulation loop of a large-scale model of a light-boling boiling-water reactor

1985 ◽  
Vol 58 (4) ◽  
pp. 265-271 ◽  
Author(s):  
A. S. Babykin ◽  
B. F. Balunov ◽  
T. S. Zhivitskaya ◽  
E. L. Smirnov ◽  
V. I. Tisheninova ◽  
...  
Keyword(s):  
Large Scale ◽  
Natural Circulation ◽  
Boiling Water ◽  
Circulation Loop ◽  
Scale Model ◽  
Boiling Water Reactor ◽  
Water Reactor ◽  
Natural Circulation Loop ◽  
Large Scale Model

Circulation characteristics of a natural-circulation loop in a large-scale model for a weakly boiling reactor

1985 ◽  
Vol 58 (3) ◽  
pp. 182-186
Author(s):  
N. S. Al'ferov ◽  
A. S. Babykin ◽  
B. F. Balunov ◽  
V. V. Vakhrushev ◽  
V. S. Kuul' ◽  
...  
Keyword(s):  
Large Scale ◽  
Natural Circulation ◽  
Circulation Loop ◽  
Scale Model ◽  
Natural Circulation Loop ◽  
Large Scale Model ◽  
Boiling Reactor ◽  
Circulation Characteristics

scholarly journals CORE DESIGN STUDY FOR A SMALL MODULAR BOILING WATER REACTOR

2021 ◽  
Vol 247 ◽  
pp. 19001
Author(s):  
Andhika Feri Wibisono ◽  
Eugene Shwageraus
Keyword(s):  
Natural Circulation ◽  
Boiling Water ◽  
Boiling Water Reactor ◽  
Core Analysis ◽  
Water Reactor ◽  
Natural Circulation Loop ◽  
Fuel Assemblies ◽  
Management Schemes ◽  
Nodal Diffusion ◽  
Full Core

The hybrid Small Modular Boiling Water Reactor (SMBWR) is a new conceptual design of BWR-type SMR. The main features of SMBWR include a natural circulation loop in its coolant recirculation system and external superheaters system integrated into the steam cycle. A full core analysis of SMBWR is performed with the nodal diffusion code PANTHER using homogenised constant libraries generated by WIMS. The study compared a number of core geometry configurations and fuel management schemes to suppress excess reactivity throughout fuel depletion. Three options for SMBWR core aspect ratio using the same power density are investigated with the aim to assess the effect on the neutronic and thermal-hydraulic performance of the SMBWR. It is found that the thin and tall core configuration (192 fuel assemblies and 3.60 m) showed the least favourable performance out of the three options as it has the largest core pressure drop and thus requires taller chimney to develop natural circulation.

The Startup of the Dodewaard Natural Circulation Boiling Water Reactor—Experiences

1994 ◽  
Vol 107 (1) ◽  
pp. 93-102 ◽  
Author(s):  
Wim H. M. Nissen ◽  
Jaap Van Der Voet ◽  
Jadranko Karuza
Keyword(s):  
Natural Circulation ◽  
Boiling Water ◽  
Boiling Water Reactor ◽  
Water Reactor

Steam drum level dynamics in a multiple loop natural circulation system of a pressure-tube type boiling water reactor

2011 ◽  
Vol 38 (10) ◽  
pp. 2227-2237 ◽  
Author(s):  
Vikas Jain ◽  
P.P. Kulkarni ◽  
A.K. Nayak ◽  
P.K. Vijayan ◽  
D. Saha ◽  
...  
Keyword(s):  
Natural Circulation ◽  
Boiling Water ◽  
Pressure Tube ◽  
Circulation System ◽  
Boiling Water Reactor ◽  
Water Reactor ◽  
Tube Type ◽  
Steam Drum

Description of Typical Flow Instabilities in the Natural Circulation System

2002 ◽  
Author(s):  
Shengyao Jiang ◽  
Xingtuan Yang ◽  
Youjie Zhang
Keyword(s):  
Natural Circulation ◽  
Great Influence ◽  
Operating Conditions ◽  
Boiling Water ◽  
Flow Instabilities ◽  
Circulation System ◽  
Boiling Water Reactor ◽  
Primary Loop ◽  
Water Reactor ◽  
Test Loop

The experiments were performed on the test loop HRTL-5, which simulates geometry and system design of the 5-MW Nuclear Heating Reactor developed by the Institute of Nuclear Energy Technology, Tsinghua University. Because of the difference of the geometry design and operating conditions between the heating reactor and the boiling water reactor, the flow behavior presents great differences too, some of which haven’t been deeply studied so far. Results show that in heating reactor, sub-cooled boiling, condensation and flashing play an important role on the flow instabilities of the natural circulation system. Correspondingly, geysering instability, flashing instability, and flow excursion are the very typical instabilities occurring in the primary loop of HRTL-5, which are different from those in boiling water reactor conditions. The compressibility of the steam space on the top of the primary loop has also great influence on the instability of the natural circulation system.

Stability Analysis of a Supercritical Water Natural Circulation Loop

2012 ◽  
Author(s):  
ZhongChun Li ◽  
JiYang Yu ◽  
XiaoMing Song
Keyword(s):  
Supercritical Water ◽  
Natural Circulation ◽  
Basic Research ◽  
Circulation Loop ◽  
Two Phase ◽  
Water Reactor ◽  
Natural Circulation Loop ◽  
The Stability ◽  
Engineering Physics ◽  
Supercritical Water Reactor

As a part of “supercritical water reactor basic research”, the stability of the natural circulation research plays an important role on the feasibility of supercritical water reactor and experiment research. In this paper, the stability of a supercritical water natural circulation loop built by Department of Engineering Physics, Tsinghua University was studied by numerical method. It was confirmed that the static or Ledinegg instability doesn’t occur in HACA system, and there are no instabilities existing when the inlet enthalpy is larger than critical enthalpy. Instability was observed by numerical way, which is similar to DWOs and PDOs in two phase natural circulation loop. The system parameters’ influence on the instability of supercritical natural circulation loop was studied.

Thermohydraulic characteristics of the condenser in the natural-circulation loop of an MTR modular heavy-water reactor

1992 ◽  
Vol 72 (2) ◽  
pp. 131-137
Author(s):  
B. F. Balunov ◽  
D. G. Govyadko ◽  
T. S. Zhivitskaya ◽  
V. I. Kiselev ◽  
B. R. Bergel'son ◽  
...  
Keyword(s):  
Heavy Water ◽  
Natural Circulation ◽  
Circulation Loop ◽  
Water Reactor ◽  
Natural Circulation Loop ◽  
Heavy Water Reactor

Study of a Natural-Circulation Boiling Water Reactor with Passive Safety

1990 ◽  
Vol 92 (2) ◽  
pp. 260-268 ◽  
Author(s):  
Hideo Nagasaka ◽  
Takashi Sato ◽  
Hirohide Oikawa ◽  
Ryoichi Hamazaki ◽  
Kenji Arai ◽  
...  
Keyword(s):  
Natural Circulation ◽  
Boiling Water ◽  
Passive Safety ◽  
Boiling Water Reactor ◽  
Water Reactor
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