Shielding Design and Analysis for the Proton Tube of China Lead-Alloy Cooled Research Reactor (CLEAR-I)

2013 ◽  
Author(s):  
Bin Li ◽  
Qi Yang ◽  
Jun Zou ◽  
Qin Zeng ◽  
Yunqing Bai
Keyword(s):  
Research Reactor ◽  
Working Time ◽  
Lead Alloy ◽  
Optimization Analysis ◽  
Potential Exposure ◽  
Design And Optimization ◽  
System A ◽  
Shielding Design ◽  
Subcritical System

In China Lead Alloy Cooled Research Reactor (CLEAR-I), which is an accelerator driven subcritical system, a proton tube inserts into core from the top of reactor. Some neutrons will leak out along the proton tube, inducing structure materials damage and potential exposure danger for workers. The shielding design and optimization analysis for the proton tube of CLEAR-I was conducted using the VisualBUS system developed by FDS Team in this study. The result indicated that during operation allowed working time at outside containing compartment above the reactor shall not exceed 40 hours per week and entering into containing compartment was forbidden. Above results showed that the design after optimization basically met the requirements of shielding.

Primary Shielding Design and Analysis for CLEAR-I

2013 ◽  
Author(s):  
Qi Yang ◽  
Bin Li ◽  
Chao Chen ◽  
Minghuang Wang ◽  
Qin Zeng
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Research Reactor ◽  
Natural Circulation ◽  
Radiation Shielding ◽  
Lead Alloy ◽  
Reactor Plant ◽  
Calculation System ◽  
Shielding Design ◽  
Dual Models

The China Lead-Alloy Cooled Research Reactor (CLEAR-I) is critical/sub-critical dual-models natural circulation lead alloy cooled reactor. This study is to focus on the concern radiation shielding design and analysis for CLEAR-I. The modeling program MCAM and calculation system VisualBUS developed by FDS Team was used based on Monte Carlo method and other coupled methods. As indicated by the results, the dose rate in the reactor plant (outside the containing compartment above the reactor) was below 9 uSv/h during operation and less than 1 uSv/h during shutdown, meeting with the requirements of shielding.

Development and Application of Neutron Damage Calculation Code for ADS System

2013 ◽  
Author(s):  
Jun Zou ◽  
Chong Chen ◽  
Qin Zeng ◽  
Qi Yang ◽  
Zhong Chen
Keyword(s):  
Hydrogen Production ◽  
Research Reactor ◽  
Structural Materials ◽  
Lead Alloy ◽  
System A ◽  
Neutron Damage ◽  
Reasonable Range ◽  
Atom Displacement ◽  
Calculation Code

A neutron damage calculation code named NDCC was developed for the shielding analysis of ADS. The code can calculate atom displacement, helium and hydrogen production of the nuclides and compositions constituting the structural materials in ADS system. A benchmark was performed in China Lead-Alloy Cooled Research Reactor (CLEAR-I) to test the availability and reliability of the NDCC code. The discrepancy between the NDCC calculation and the results calculated by other codes fell into a reasonable range.

Preliminary Core Design and Optimization Analysis of Travelling Wave Reactor

2014 ◽  
Vol 1070-1072 ◽  
pp. 357-360
Author(s):  
Dao Xiang Shen ◽  
Yao Li Zhang ◽  
Qi Xun Guo
Keyword(s):  
Monte Carlo ◽  
Rational Design ◽  
Nuclear Reactor ◽  
Reactor Core ◽  
Travelling Wave ◽  
Optimization Analysis ◽  
Design And Optimization ◽  
Uranium Fuel ◽  
Enriched Uranium ◽  
Ignition Zone

A travelling wave reactor (TWR) is an advanced nuclear reactor which is capable of running for decades given only depleted uranium fuel, it is considered one of the most promising solutions for nonproliferation. A preliminary core design was proposed in this paper. The calculation was performed by Monte Carlo method. The burning mechanism of the reactor core design was studied. Optimization on the ignition zone was performed to reduce the amount of enriched uranium initially deployed. The results showed that the preliminary core design was feasible. The optimization analysis showed that the amount of enriched uranium could be reduced under rational design.

scholarly journals Design and Optimization of Coupling Coils for Bidirectional Wireless Charging System of Unmanned Aerial Vehicle

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1964
Author(s):  
Yang Li ◽  
Xin Ni ◽  
Jiaming Liu ◽  
Rui Wang ◽  
Jingnan Ma ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Lightweight Design ◽  
Wireless Charging ◽  
Power Transfer ◽  
Design And Optimization ◽  
Charging System ◽  
Transmission Distance ◽  
System A ◽  
Power Transfer Efficiency ◽  
Aerial Vehicle

To solve the battery power supply problem with wireless sensor networks (WSNs), a novel bidirectional wireless charging system is proposed, in which an unmanned aerial vehicle (UAV) can fly to the WSNs to charge sensors through high-frequency wireless power transfer (WPT) and also obtain energy for its own battery in the same way. To improve the performance of the UAV bidirectional wireless charging system, a lightweight design is adopted to increase its loading capacity and working time. Moreover, the radii and the numbers of turns and pitches of coupling coils were designed and optimized on the basis of simulations and experiments. Experimental results show that the weight of optimized UAV coil was reduced by 34.45%. The power transfer efficiency (PTE) of the UAV coil to sensor coil increased from 60.2% to 74.4% at a transmission distance of 15 cm, while that of the ground transmitting coil to UAV coil increased from 65.2% to 90.1% at 10 cm.

scholarly journals Experimental Investigation on a Thermoelectric Cooler for Thermal Management of a Lithium-Ion Battery Module

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Xinxi Li ◽  
Zhaoda Zhong ◽  
Jinghai Luo ◽  
Ziyuan Wang ◽  
Weizhong Yuan ◽  
...  
Keyword(s):  
Thermal Management ◽  
Cooling System ◽  
Discharge Rate ◽  
Lithium Ion ◽  
Design And Optimization ◽  
System A ◽  
Battery Thermal Management ◽  
Thermal Management System ◽  
Battery Thermal Management System ◽  
Battery Module

Electric vehicles (EVs) powered by lithium batteries, which are a promising type of green transportation, have attracted much attention in recent years. In this study, a thermoelectric generator (TEG) coupled with forced convection (F-C) was designed as an effective and feasible cooling system for a battery thermal management system. A comparison of natural convection cooling, F-C cooling, and TEG cooling reveals that the TEG is the best cooling system. Specifically, this system can decrease the temperature by 16.44% at the discharge rate of 3C. The coupled TEG and F-C cooling system can significantly control temperature at a relatively high discharge rate. This system not only can decrease the temperature of the battery module promptly but also can reduce the energy consumption compared with the two other TEG-based cooling systems. These results are expected to supply an effective basis of the design and optimization of battery thermal management systems to improve the reliability and safety performance of EVs.

Explosion Simulation for Petrochemical Plant with Water Spray

2013 ◽  
Vol 634-638 ◽  
pp. 1608-1611
Author(s):  
Ji Wu Yuan ◽  
Xiang Di Zhao ◽  
Zheng Wang
Keyword(s):  
Coal Gasification ◽  
Petrochemical Plant ◽  
Water Spray ◽  
Design And Optimization ◽  
Traditional Assessment ◽  
Spray System ◽  
System A ◽  
Assessment Techniques ◽  
Plant Simulation ◽  
Explosion Risk

Traditional assessment techniques can't predict the explosion with effects of water spray system. A method of explosion simulation which based on FLACS software for Petrochemical plant with water spray were used for simulating the explosion risk of a coal gasification company’s plant. Simulation results indicate that the water spray system can significantly weaken the devices exploded consequences. This method can be used for fire protection system design and optimization of layout for petrochemical plants.

Optimization design of bonnet inner based on pedestrian head protection and stiffness requirements

2017 ◽  
Vol 06 (01) ◽  
pp. 1750005 ◽  
Author(s):  
Xiongqi Peng ◽  
Purit Thanakijkasem ◽  
Xiaomin Zeng ◽  
Hongsheng Lu
Keyword(s):  
Optimization Design ◽  
Parametric Design ◽  
Optimization Method ◽  
Multidisciplinary Optimization ◽  
Fe Model ◽  
Optimization Analysis ◽  
Stiffness Analysis ◽  
Design And Optimization ◽  
Car Accidents ◽  
Head Protection

Head impact with bonnet is one of the major causes for pedestrian severe injury or fatality in car accidents. This paper proposes a multidisciplinary design optimization method for bonnet inner based on pedestrian head protection along with bonnet stiffness requirement. A finite element (FE) model of a child headform impactor is developed and verified via simulation according to Global Technical Regulation No. 9 (GTR No. 9). Static stiffness analysis and headform collision simulation against one impact point for a particular bonnet are implemented. Parametric design and optimization analysis are carried out. Optimization solution significantly achieves a better head protection effect, which clearly affirms the feasibility of the proposed multidisciplinary optimization method and provides a reference approach to optimal design of engine bonnet inner.

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