bluuebunny/crossref_metadata_2025 huggingface dataset:
On the Construction of Safety Running and Management Systems for Chinese E-Government System
Authors: Zhao Da Peng , Zhang Rui Xin
Published: December 2012

The operational safety has become a bottleneck problem in the construction of e-government system. The perfection of the safety management system is particularly significant to guarantee the e-government operational safety under the circumstances of a comparatively backward information technology foundation in China. The safety running and management systems can be classified into two main aspects: safety administration management and technical safety management. The former includes establishing the safety management organization system, improving the responsibility system of safety management, strengthening the management of network information, stressing the management and development of human resources and so on. And the safety management of the host computer sites, data management for computer system, the establishment of a standardized data and information management system, emergency recovery measures, the establishment of the security auditing system, safety assessment and so on make up of the latter.
Application of Visualization and GIS Techniques in Water Conservancy Works
Authors: Xie Nan , Yang Zhi
Published: December 2012

3D visualization has become the basic requirements of many applications of GIS. However, most of the commercialization of GIS software based on two-dimensional, to describe the true three-dimensional hydraulic engineering environment. Data integration with 3D visualization technology can be obtained through various means in order to visualize three-dimensional graphics dynamically shown to provide a convenient analytical tool to handle the vast amounts of complex engineering data, has become the GIS research cutting edge of technology and research hotspot. This paper first discusses the hydraulic engineering 3D visualization modeling framework and then study the water conservancy 3D GIS model and visualize the general principles and processes. And the general approach and application effect of 3D GIS Model have been illustrated in detailed.
E-Commerce Model Research Based on Cloud Service
Authors: Ma Dong Jun
Published: December 2012

E-commerce service has become the essential issues in internet, but in how to use cloud computing to serve the information processing of E-commerce in order to enhance the efficiency of management is still an emerging research topic. This study explore the concept of cloud services and cloud application mechanisms in e-commerce model，analyzing the technology construction and means of support based on new business model to improve the service management process. Finally, according to these analysis, we discus some problems of cloud service which can enhance the use of its capabilities and better improve the efficiency of e-commerce operations.
The Application Research of Private Cloud in the Data Centers Colleges of Universities
Authors: Wang Xin Peng , Feng Li Xing , Zhao Jian Dong
Published: December 2012

With the development of information technology and business model innovation, cloud computing has become a new user experience and business model. This paper first introduced the concept of cloud computing features and cloud computing system architecture, and then as the private cloud data center applications in colleges and universities an example, analysised the value of private cloud for the university data center, private cloud key technology and implementation details, and finally Indicates that a private cloud computing the future development trends and the application mode of school-enterprise cooperation private cloud.
Study On the Design Methods of Fast Moving Consumer Goods
Authors: Ni Min Na , Wang Li , Li Yan
Published: December 2012

The fast moving consumer goods included a wide range of items. The basic characteristics of the fast moving consumer goods result in that the consumers’ buying habit is: simple, rapid, impulsive, emotional. In the trend of market segmentation, enterprises have to make the products respond quickly to design and manufacture under the premise of meeting functions. In the design process, designers find out design point by axiomatic design method, and then through a modular design, rapidly assemble the various elements thereby to design series of products with distinctive features in batch, so as to help enterprises to extend the product life cycle.
Development of Parts Family Manage System Based on PDM in Large-Scale Air Separation Equipment
Authors: Zhu Rui , Meng Guang , Li Hong Guang
Published: December 2012

Large-scale air separation equipment is used widely in chemical industry. It can provide oxygen, nitrogen and argon for the production process. Based on the deep analysis of the working principle and using equipment, the air separation unit product data management (PDM) system is developed by Visual Basic (VB) in this paper develops. The modularized design procedure and grouping technique (GT) are adopted in this system. The morphological matrix is used to establish their coordination relationship among parts. The system has many characters, such as perfect function, reasonable database structure, and concise software interface layout. Optimizing equipment parts management properly and effectively has important practical significance in designing the subsequent product development work and establishing concurrent design environment of the air separation unit.
An Efficient Torlerance Robust Design Method Based on Taguchi Theory
Authors: Kan Hai Ming , Li Hai Bin , Xia Xiao Li , Zhang Yan Tao
Published: December 2012

Torlerance design is one of the most important part in product development, which can affect the quality of product. In order to improve the quality of the products and design robustness, this paper developed an efficient torlerance robust design method on base of the Taguchi Theory. The lossing of fuzzy quality is used to modeling the quality of product, the cost and quality are modeled as optimization objective to finish the torlerrance robust design. An example is also studied to verify the effectiveness of the method.
Research on Electric Power Equipment Preventive Maintenance Cycle on the Basis of Economic Life Cycle Costing
Authors: Li Yan , Hu Yu Mei , Luo Yun Feng , Liu Chang Chen
Published: December 2012

The maintenance strategy is a tradeoff between cost and reliability. In this paper we consider the maintenance plan from the view of economic life cycle cost and reliability. We discuss the maintenance interval optimization on the premise that the preventive maintenance mitigates failure rate level and intensifies failure variance ratio meanwhile. The specific effect of this kind of preventive maintenance on failure rate and its variance ratio is explored, and then we construct a life cycle cost model of electric power equipment and propose the annuity of life cycle cost minimization as a method for seeking an optimal maintenance interval solution.
The Finite Element Analysis on the Crossbeam of Full Automatic Hydraulic Tile Press
Authors: Lv Dong Qing
Published: December 2012

Completed the finite element static analysis on the crossbeam of a certain type of automatic hydraulic tile press and discussed stress and transfiguration of the crossbeam. The result can provide reference for design, and the discussion will be useful for mechanical engineering.
The Exploration of Recycling Design of Furniture Products Based on Structure
Authors: Liu Ling
Published: December 2012

This article explores the recycling design of products based on the research of furniture structures. It details the importance of recycling design in sustainable development of the furniture products and environmental protection, exploring and summarizing the methods of detachable design and modularization design. Through lengthening the lifespan of the furniture products, recycling design promotes the reuse of the furniture products, to decrease contamination, save energy, protect the environment and sustainably develop.
Information on Risks and Prevention of the Supply Chain in E-Commerce Environment
Authors: Xu Peng Ying
Published: December 2012

E-commerce environment improves the efficiency of information flow in the supply chain, and realizes information sharing of all aspects. Information sharing in each node enterprise makes more rational use of resources, reduces the dead time of all aspects, and advances the operational efficiency of supply chain, which plays an increasingly important role in the orderly operation of the entire supply chain. While network technology and IT facilitate supply chain management, their security risks have brought trouble to the effective operation of the supply chain, which restricts the operation and development of the supply chain. Therefore, the supply chain information risk management issues are paid more attention. In this situation, I study and analyze the information risk of the supply chain in e-commerce environment, also explore the corresponding information risk. This helps provide decision support for enterprise information risk analysis of supply chain and has important practical significance to the accurate and efficient operation of the entire supply chain in e-commerce environment.
Research on Confidence Degree of Enterprise Alliance under the Environment of Network-Based Manufacturing
Authors: Zhang Xian
Published: December 2012

Under the environment of the network-based manufacturing, Ihe goal of the formation of enterprise alliance is to expeditiously complete the development of new products to gain the market. In order to meet the chance for enterprises alliance to complete the goal largest, this paper provided the concept of confidence degree and its corresponding calculation method. After studying the confidence degree of the total enterprise alliance, the simplified calculation method is set up for the big alliance. This calculation mathod can embody the essence of the partner selection better, and provide a rational strategy for establishing the enterprise alliance.
The Research of Heuristic Algorithm for Flow Shop Scheduling Problem
Authors: Tang Dan , Shu Hong Ping
Published: December 2012

For the flow shop scheduling problem which aims to minimize makespan, this paper gives a new derivation about its mathematical definition, and mining characteristics of the problem itself further. By which analysis, the new heuristic method proposed in the paper shorten the waiting time of each job as much as possible on the basis of reduce the processing time of the first machine and last job. The result of simulation experiments shows that, our new heuristic algorithm has good performance, and the average quality and stability of scheduling sequences generated by new method is significantly better than other heuristic algorithm which has the same complexity.
To Solve Mechanical Working Space by Applying Graphic Integration in ADAMS
Authors: Zhang Rui Hua , Zhu Yin Fa , Yang Song
Published: December 2012

This paper mainly focuses on applying graphical method to figure out the working space of the new five joint folding arm supported pumper based on ADAMS. Firstly, discrete the included angle α between the third and the forth arm support, pick out several special points, work out the changing curve of the included angle β in the region of [0,180°] between the forth and the fifth arm support, and then get the plane track of the motion of spray gun by superposition of those curves and finally take the effect of turn angles of rotary tables into consideration, figure out the three-dimensional working space track of the spray gun by the superposition of plane track curves in the region of [0,360°].
A Rapid Design System for the Transmission System of Mounter Worktable Based on Second Development of SolidWorks
Authors: Li X M , Lu W H , Ning X , Jin G C , Yu T C
Published: December 2012

Aiming at the problem of consulting huge amount of data and diagrams when designing the transmission system of mounter worktable, the main parts of the transmission system, including guide rail, ball screw, servo motor and coupling, are analyzed. By using API function of SolidWorks, a rapid design prototype system for the transmission system of mounter worktable is developed via VC++6.0. This system can realize calculation and selection for the main parts of the transmission system accomplish the design and generate 3D drawing automatically. It improves the efficiency of the product design and reduces development cycle.
The Application of AutoCAD Software in Forestry
Authors: Zhao Li Jun , Li Feng Ri , Jia Wei Wei
Published: December 2012

AutoCAD is an accessorial desktop cartography software widely used in project cartography for its easy manipulation and data edit ability. GIS is a powerful tool of using computers to make dimensional with advantage of display, analysis, output and management of geographical data. The data of the two systems is not compatible and they need to be transformed for data sharing and application. This paper points out the difference of AutoCAD and GIS data, analyzes some common problems during the data transforming process and introduced the experimental study which takes example for transforming the CAD forestry map of Buyunshan country, Dalian city to ArcView geographical information system. The objective of this paper was trying to find an effective way for the transformation from CAD graphics files to geographical information system.
Characteristic Study on Temperature Field of Hydrostatic Bearing of Hydroforming Machine
Authors: Wang Shi Gang , Du Xian Feng , Li Dong Sheng , Hu Qing Ming
Published: December 2012

Temperature field of hydrostatic bearing of hydroforming machine is studied in this paper,SOLIDWORKS2009 is used to model the simulational modeling of hydrostatic bearing of hydroforming machine, and then experiments based on hydroforming machine is conducted by using the finite element software FLUENT6.3 and GAMBIT, with the simulational results that the temperature field of hydrostatic bearing. Finally, the relationship between temperature field and angle-velocity is concluded by analyzing the simulational experiments results. The simulational results provide theoretical support and effective conference for the optimized layout of the heat transfer of hydrostatic bearing with heat transfer, which will reduce the experimental costs and the development time of the hydrostatic bearing.
Study on Parametric Assembly Modeling of Standard Parts with Assembly Level of Mold Based on UG Secondary Development
Authors: Zhou Mao Jun , Zhang Ji Cai , Zhao Xiu Jun , Ma Qin Yi
Published: December 2012

With the use of Visual C++ 6.0 programming development tools as the secondary development of Unigraphics NX (UG), dynamic link library DLL plug-ins were created. This paper takes fixed pedestal which is a standard part with assembly level of mold as an example, describing the parametric assembly modeling technology and implementation method of automatic virtual assembly process. The method can improve the design efficiency greatly by changing the related parameters of the parts to regenerate model fast and complete the design as well as assemble of fixed pedestal. It is proved that this method can meet the mould design requirements, and can be expanded and used for parameterized modeling and assembling of other standard parts with assembly level of mold in the practice.
Tooth Surface Contact Fatigue Reliability Analysis of Cycloidal Gear Based on Monte-Carlo
Authors: Guan Tian Min , Li Jiang Bo , Lei Lei
Published: December 2012

All sorts of design variables and parameters are often regarded as fixed values in the traditional design, it cannot describe quantitatively how well the products are safe. It is necessary to make a reliability analysis of cycloidal gear, which is the key part of FA pin-cycloidal transmission, this paper uses Monte-Carlo method to simulate and test the distribution laws of the contact stress and the contact fatigue strength of cycloidal gear, which indicates that the contact stress obeys the normal distribution and the contact fatigue strength obeys the lognormal distribution, besides, makes a sensitivity analysis of the random parameters, all these work lay the foundation for the reliability analysis of the whole reducer.
Fracture Reason Analysis for Helical Gear Shaft of Converter Tilting Mechanism Senior Reducer
Authors: Guan Li Kun , Wang Ning Ning
Published: December 2012

A steel works 210 tons basic oxygen furnace tilting mechanism senior reducer high-speed helical gear shaft fracture. In order to find fractured reason, the static strength analysis of helical gear shaft were conducted by the finite element analysis software ANSYS, get the amount of deformation and stress distribution of helical gear shaft. On the basis of this result, based on fatigue cumulative damage theory and the concept of fatigue failure ensure it is fatigue fracture. The results of Static strength analysis provides important data to calculate fatigue life of helical gear shaft by fatigue analysis software, and Provides a theoretical basis for reliability design of helical gear shaft.
Fault Diagnosis System of the Fire Control System Based on Fuzzy Neural Network
Authors: Zhang Peng Jun , Bo Yu Cheng , Wang Hui Yuan , Li Qiang
Published: December 2012

the paper mainly solves the questions of real time fault detection and diagnosis for fire control system. Function structure and fault characteristics of the fire control system be hierarchical analyzed, through fault omen character and fault reason make up of fault stylebook, use neural network training to improve the fault diagnosis accuracy, select implication operator and calculate the fuzzy membership degree matrix of fault information, through hierarchical reasoning to complete fault recognition and confirm fault source to improve the diagnosis rate. The system is multifunctional which includes of state monitoring, fault diagnosis, diagnosis opinion, the distributed principal and subordinate structure design is propitious to improve reliability and adaptability of the system.
The Fault Diagnosis Model of FMS Workflow Based on Adaptive Weighted Fuzzy Petri Net
Authors: Pan Hai Lan , Jiang Wen Rong , He Hai Hui
Published: December 2012

This paper proposes a method for using neural network and weighted fuzzy Petri net to diagnose fault. Aiming at the traditional Petri net can not precisely predict the complex relation of the default phenomenon and the cause, neural network, fuzzy logic and the traditional Petri net are combined, and a constructing method for adaptive weighted fuzzy Petri net model is proposed. Based on this, an improved BP algorism is introduced to train the weight of the model, and the specific process for using the model to diagnose the fault is given. Finally, the model was applied to the instance of FMS, and the model was proved to have the advantages of Petri net and neural network and have reasoning and adaptive ability.
The Design of Pressure Meter Based on Ultralow-Power Consumption Technique
Authors: Xie Zhi Ying , Zheng Li Ping , Zhang Han
Published: December 2012

Since our world is facing with the problem of short power supply, it would be helpful to control the power consumption with the supper low power-consuming digital pressure detector discussed in the paper. The detector is controlled with chip microcomputer MSP430, and its software and hardware design is given in this paper, and the inspection precision is proved to be 0.4 levels.
Road Load Spectrum Collection and Analysis of AMT Actuating Mechanism
Authors: Zou Xi Hong , Qiao Kai , Shi Xiao Hui
Published: December 2012

Road load spectrum is not only the prerequisites of fatigue reliability analysis and test of AMT(Automated Manual Transmission) actuating mechanism, but also the input and boundary conditions of CAE(Computer Aided Engineering). Based on analysis of AMT motion and force, the measuring points of road load spectrum are determined, and the accelerometers and strain gauges are installed. Then the road load spectrum of AMT actuating mechanism is collected on Xiangfan Automobile Proving Ground according to related standards. At the same time the acquired road load spectrum is analyzed, such as pretreatment, repeatability checking and statistical analysis. The results indicate that the acquired road load spectrum is well reliable and repeatable, which provides effective basic data for design, analysis and verification of AMT actuating mechanism.
Research of Ultrasonic Flow Detection Method Based on Hydrodynamics Analysis
Authors: Sun Lai Jun , Liu Ming Liang , Hou Ying
Published: December 2012

Commonly referring to the flow velocity is surface mean velocity which evenly be distributed along the circular cross section of pipe. But the pipe velocity measured by ultrasonic flowmeter is linear mean velocity along ultrasonic transmission routes. They are different, so must be corrected. Using the hydrodynamics theory, this paper deduced the equation of flow correction coefficient in laminar flow condition and turbulent flow condition, and dynamically dealt with flow correction coefficient, finally analyzed and evaluated correction curves. The results indicate that this paper can accurately calibrate the ultrasonic flow and get the satisfactory measurement results.
FEM Study on the Dynamic Effects of CMM Geometric Errors
Authors: Chen Yan Ling , Peng Yu Ning , Wei Zhong Hai
Published: December 2012

Geometric errors are seldom considered the generations of CMM dynamic errors. This paper presents the dynamic effects of the geometric errors of CMM in fast probing, and investigates the properties with Finite Elements Method (FEM). The FEM model was composed of CMM moving bridge and its guide way. Presuming CMM guide way as an ideal rigid geometry, then angular errors were generated by the rotations of guide way around a corresponding coordinate axis, while translation errors came from the translations of guide way. Thus the 6 geometric errors on each guide way were completely decoupling and the corresponding dynamic effects were studied respectively. Analyses show that the angular errors around Y and Z-axes, Y(x) and Z(x), can induce remarkable dynamic effects at probe tip, especially in a CMM with low stiffness air bearing.
Wheat Sedimentation Value Determination Based on Near Infrared Spectroscopy
Authors: Sun Lai Jun , Liu Ming Liang , Xu Lu Lu , Li Xin Fang , Mao Xiao Dong
Published: December 2012

The value of sedimentation is a comprehensive index to assess the quality of wheat, but using near infrared spectroscopy to determinate wheat sedimentation value is rarely reported. In this paper, we explore the feasibility and effectiveness of wheat sedimentation value determination based on near infrared spectroscopy. We establish the PLS calibration regression model of wheat sedimentation value and BP neural network calibration model of wheat sedimentation value. The roots mean square error of prediction(RMSEP) and prediction correlation coefficient(r) are 0.73554、7.3352 and 0.49118、10.015 respectively. And complete with models of wheat protein content built in the same circumstances to analyze reasons of poor wheat sedimentation value forecasted.
The Analysis of the Transient Characteristics of the PV System with Hybrid Energy Storage System
Authors: Wang Xin , Zheng Jing Hong , Zhu Shou Zhen
Published: December 2012

The utilization of the solar cell effectively promotes the use of renewable energy. Since the light intensity changes with the time and the weather conditions, the output power of the photovoltaic (PV) cells is also unstable. It is a common way of using the storage device to stabilize the power fluctuation. Firstly, a control strategy of the hybrid energy storage consisting of battery and super capacitor is presented in the paper. Then the transient characteristics of photovoltaic systems with hybrid energy storage system (HESS) are investigated by simulation experiment, which include the transient behavior with a sharp change of light intensity and the transient characteristics in a three-phase short-circuit fault. The advantage of super-capacitor in the hybrid energy storage system is also analyzed in the transient process. Finally, some conclusions about the transient characteristics of the PV system with the HESS are summarized.
Graphene and Metal Oxide Composites for Supercapacitors
Authors: Liu Yun Fu , Jiang Zhao Hua , Yuan Guo Hui
Published: December 2012

Graphene-metal oxide composites as supercapacitor electrodes combine the large pseudocapacitance of metal oxides with the fascinating electrical and mechanical properties and large surface area of graphene. The synthetic methods for composites are reviewed, including in-siu synthesis, solution mixing, hydrothermal method, microware irradiation and electrochemical deposition. Among these techniques, the hydrothermal method offers an effective and simple way to anchor metal oxides on the 2D graphene sheet uniformly. Consequently, the composites exhibit high capacity, high rate capability and well reversibility, presenting promising prospects as supercapacitor electrode material.
Capacitive Study of Ni(OH)2 Xerogels in KOH Solution
Authors: Tian Xin Jin , Cheng Jie , Wen Yue Hua , Cao Gao Ping , Liu Han Min
Published: December 2012

Ni(OH)2 xerogels were formed by sol-gel method at 80 °C followed drying at 110 °C and ambient pressure. The structure of Ni(OH)2 xerogels was characterized using X-ray diffraction, transmission electron microscope (TEM) and N2 (77K) adsorption. X-Ray Diffraction (XRD) results showed that the material obtained has a crystalline -Ni(OH)2. TEM images showed that average size of the crystalline phase is about 10 nm. Results of N2 (77K) adsorption isotherm showed that the (BET) specific surface area is 232 m2/g and the Pore size distribution is in the regime 1-4 nm (Barrett–Joyner–Halenda, BJH). The Ni(OH)2 xerogels electrodes were activated using cyclic voltammetry, and their capacitive performance was evaluated using cyclic voltammetry (CV) and constant current discharge. The Ni(OH)2 xerogels electrodes exhibited excellent capacitive behavior with a specific capacitance of 635 F/g (calculated by CV). High performance obtained indicates that the Ni(OH)2 xerogels are promising electrode materials for supercapacitors, and the electrochemical activation of these electrodes is doable.
Research and Develop on Static Frequency Converter of Pumped Storage Power Plant
Authors: Wang De Shun , Yang Bo , Ji Lian Tao
Published: December 2012

A static frequency converter start-up control strategy for pumped-storage power unit is presented. And rotor position detecting without position sensor is realized according to voltage and magnetism equations of ideal synchronous motor mathematics model. The mechanism and implementation method of initial rotor position determination and rotor position estimation under low frequency without position sensor are expounded and validated by simulations. Based on the mentioned control strategy, first set of a static frequency converter start-up device in China for large-scale pumped-storage unit is developed, which is applied to start-up control test in the 90 MW generator/motor of Panjiakou Pumped-storage Power Plant. Test results show that rotor position detecting, pulse commutation, natural commutation, and unit synchronous procedure control of static start-up are all proved. The outcomes have been applied in running equipment, which proves the feasibility of mentioned method.
Indirect Evaporative Cooling – An Energy Efficient Way for Air Conditioning
Authors: Chen Min Lei , Liu Xiao Long , Hu Eric Jing
Published: December 2012

Invention and the widely use of air conditioning has improved people’s working and living conditions. However, it also consumes significant amount of energy, accounting for over 40% of total energy used in the buildings. Indirect evaporative cooling (IEC) is a relatively new kind of air conditioning mechanism developed. It is not only uses less energy comparing with traditional air conditioning, but also overcomes the weaknesses of a direct evaporative cooling (DEC) system. The weaknesses of DEC include humidifying the supply air and minimum temperature of supply air is not lower than wet bulb temperature.
A Study on Waste Heat Recovery in Drain Water with Water-to-Water Heat Exchanger in Barbershops
Authors: Sun Fang Tian , Wang Na , Gong Xiao Gang , Fan Yun Ze , Li De Ying
Published: December 2012

Heat utilization efficiency of barbershop was about 16.7% in China, because the low-temperature waste water at 30～36°C was directly discharged into sewer. And match of energy grade was not appropriate, because electric water heaters were used to producing hot water at 55～70°C in most of barbershops. A waste heat recovery system with water-to-water heat exchanger (WHR-HE) was presented, according to heat utilization characteristics of barbershop and scientific principle of energy utilization. WHR-HE was analyzed by the first Law of thermodynamics and economics. The analyzed results show that energy consumption can be reduced about 75%, and incremental payback period is less one year for WHR-HE. There is optimal cold side temperature difference of water-to-water heat exchanger.
Research on the Heating Plan of Recovering Condensing Heat of Power Plant by Water Source Heat Pump Unit
Authors: Qiu Wei , Zhang Li , liu Qing Rong
Published: December 2012

This paper analyses the energy consumption of water source heat pump, shows that the performance coefficient of water source heat pump unit is directly related to the temperature of water resources, and discusses the feasibility of central heating by recovering condensing heat of power plant using water source heat pump unit. It analyzes the energy saving benefit of water source heat pump unit is significant compared with traditional heating. Using the technology recovers waste heat of power plant, which can not only decrease the energy waste on the direct discharge of waste heat and water, but at the same time, it is a new air conditioning system without environmental pollution.
Research on Energy Consumption for Heating from Implementing “50% Energy-Saving Standard” and “65% Energy-Saving Standard”
Authors: Bai Li , Chen Zhao , Chu Jia Rui
Published: December 2012

This paper uses energy consumption stimulation software DeST-h to carry out stimulation study on annual energy consumption for heating of a typical residential building in Changchun city, a city in frigid area. We respectively calculated energy consumption under conditions of implementing “50% energy-saving standard” and “65% energy-saving standard”, calculated the energy-saving rate, and did research on energy-saving ability, economy, emission-reducing ability of different energy-saving standards.
Analysis of the Impact of Boiler Slag’s Physical Sensible Heat Recovery on the Thermal Economy of Thermal Power Plant
Authors: Li Yong , Xu Shi Ming , Huang Sheng Wen , Du Wu Yi
Published: December 2012

Based on the situation that the transformations of the technology which is used to reclaim the physical sensible heat of the boiler slag in some industrial captive power plants, it has been used the heat balance method and the equivalent heat drop method to calculate and analyze the thermal economic indicators before and after the transformations of the unit, and then reveal the mechanism of the impact of the boiler slag’s physical sensible heat on the thermal economy of the whole plant.
Study on Composite of Porous Si and Disordered Carbon as Anode Materials for Lithium Ion Batteries
Authors: Wang Jing , Li Jia , Wu Feng , Chen Shi
Published: December 2012

Silicon and related materials have recently received considerable attention as potential anodes in Li-ion batteries for their high theoretical speciﬁc capacities. To overcome the problem of volume change , composites comprising porous silicon, disordered carbon (DC) have been prepared by pyrolyzing the critic acid. This composite anode material showed a discharge capacity of 1390 mAh/g in the first cycle, and the initial columbic efficiency is 70%. After 20 cycles, the discharge capacity of the material is 511 mAh/g. The improved stability of this material is hypothesized to depend on the unique structure of porous Si and the coated DC. The morphologies of the composites were systematically investigated by the X-ray diffraction and scanning electron microscopy. It can be observed that porous Si particles were embedded into the matrix of the DC. The capacity and cycling stability of the composites were systematically evaluated by electrochemical charge/discharge tests.
Preparation of Conductive Response Polyaniline/Polyurethane Orderde Array Thin Film
Authors: Lin Song Zhu , Gao Feng , Jia Ruo Kun
Published: December 2012

Polyaniline nano particles and polyaniline/polyurethane composite film were prepared through the template-free method. The ordered array structure of composite thin films with optical property were observed. The proportion of polyaniline/polyurethane in the composite films was discussed, and the change of resistance and absorbance of the thin films was measured in different proportion. In the energized condition polyaniline/polyurethane composite film had morphological changes, shrink trend, and their resistance value became significantly increasing. With the increase of the voltage electricity, the film contraction trend changed bigger.
The Analysis of Chinese Photovoltaic Industry with SWOT Model and AHP Method
Authors: Gao Li Qiang , Chang Yi , Li Bo Yuan , Li Fu Zhong
Published: December 2012

The excavation and exploitation of Fossil energy caused great pollution to the natural environment. Exploitation and utilization caused by environmental pollution, scarcity gave birth to the continuous development of new energy markets, the development of photovoltaic industry in China has achieved certain results, but compared to some developed countries, is still much room for development. Unsound domestic policies, immature technology, the PV industry in China is still very high dependence on the international market, is still at the low end of the international photovoltaic industry chain, in the face of increasingly fierce competition within the industry, China's PV industry is still facing series of challenges. SWOT model, with the analytic hierarchy process method, quantitative analysis of the environment for the development of the PV industry in China, from the perspective of the weight of the analytical development of photovoltaic industry characteristics and the situation facing the sustainable development for China's PV industry to provide a reference basis.
Heavy Oil Gathering Process Test Research
Authors: Meng Jiang , Ren Lian Cheng , Zhang Yan , Chen Yue Li
Published: December 2012

In the present, Xintan Kendong 451-the 4th Kendong union station gathering is heavy oil mixed with hot water process and open operation mode. In the pipeline, without the variation of water content, in closed gathering means, mixed with hot water; mixing activity water and emulsifying gathering process are tested. The results show that the heavy oil gathering process of selection and gathering distance are related, for little variation of the water content and the flow, at about 50 °C. The distance is shorter in the gathering, the use of hot water mixed gathering process more reasonable, when gathering distance is longer, selection of emulsion pipeline gathering process more reasonable.
Design and Calculation of Cooling System to Eliminate Non-Uniform Heat Transfer on Concentration PV System (CPV)
Authors: Li Qi Fen , Li Tao , Pan Cui Cui , Zhou Zhi Tian , Sun Wei Dong
Published: December 2012

With characteristics of rapid start-up, small heat resistance，uniform temperature and strong heat transfer ability, heat pipe has been used as a facility in cooling system of concentration photovoltaic system. Through numerical calculation and analysis, heat transfer characteristics of the cooling systems are carried out in this paper. Focusing on research of conventional rectangular fin and small fin fixed on cooling systems, and the heat pipe radiator that may adopted, the high-efficiency cooling system and method which are matched with the requirement of high energy flow density and notuniformity temperature are discussed. Finally, optimization design of the cooling system structure is suggested in the paper.
Determining the Engine Oil’s TBN by Semi-Derivative Voltammetry
Authors: Shi Yong Gang , Wang Shuai , Li Zi Cun , Mei Lin , Sun Ping
Published: December 2012

A new method was proposed for determining total base numbers (TBN) of engine oils with semi-derivative Voltammetry. This method uses acetone containing hydrochloric acid as neutralization agent for titrating TBN, the remained hydrochloric acid reacts with insoluble substances, the insoluble substances are transformed into soluble and electro-active ones in acetone. Through determining the concentration of electro-active substances in the solution, oil’s TBN could be evaluated accurately. The experimental results had shown the method is simple, rapid environmentally-friendly, and could be used at-site.
Research Impact on Temperature of Polyethylene Gas Pipeline Characteristic
Authors: Ren Hong Jun , Liu Ding Zhi , Wang De Yi , Wang Jin Feng
Published: December 2012

Polyethylene pipes (PE), because of its corrosion resistance, welding, and long service life, PE pipes are used more and more widely in the gas industry. This topic is based on global warming, the phenomenon which leads to global warming, and studies the impact of temperature changes on the characteristics of polyethylene pipe. This paper uses thermal stress analysis function finite element software ANSYS, and selected PE80 SDR11 as calculating model, then establish thermal stress model to study Stress variation trend when inner wall temperature is 15° and outer wall temperature load varies. Thus, provides good suggestions and measures for the gas network operation and management.
Modeling of an Oil Shale Low Temperature Retorting Process by Using Aspen Plus
Authors: Bai Jing Ru , Bai Zhang , Li Shao Hua , Wang Qing
Published: December 2012

In this paper, the feasibility of employing Aspen Plus in the simulation of oil shale retorting would be discussed by modeling of a low temperature retorting process with fischer assay experimental condition. The samples of 4th layer of No.1 deposit and 11th layer of No.2 deposit of Huadian oil shale have been simulated, and draw a comparison between the simulation and determination results of oil content, moisture content, retorting gas yield, semi-coke yield and ultimate analysis. The tolerance between the simulation and determination results is within a reasonable range, which indicate that the process built and the physical method selected are correct and reasonable and would provide reference for building the process of oil shale comprehensive utilization system.
The Investigation of Preparing the Beta Zeolite Membrane by the Way of Secondary Growth
Authors: Shao Guo Lin , Yu Chun Ling , Fu Ying Huan , Dai Hong Yi , Zhang Li Ping
Published: December 2012

Beta zeolite membrane was prepared on the surface of α-Al2O3 support tube with large pore by the way of secondary growth. Different seeding techniques, such as ultrasonic surge, self-assembling and dip-coating, were investigated, and the results indicated that the best one was dip-coating method for the support with large pore. The prepared membrane was characterized by SEM and XRD. It was proved that the beta zeolite membrane prepared by the way of secondary growth is continuous, dense and defect-free.
New Dimensionless Model for CO2 Miscible Flooding in Five-Point Scheme
Authors: Guo Zhen Yu , Wang Xiao Dong , Liu Han Lin
Published: December 2012

Combining with five-point analytical velocity field, a new and practical CO2 miscible streamline model is developed for five-point pattern. At first, we develop one dimensionless model for CO2 miscible flooding along streamline axis; second, we deduce five-point pattern analytical velocity solution; third, we put driving model and analytical solution into allegiance. Finally, we validate our model through comparison with Eclipse and point out defects of the commercial software.
Catalytic Activity of Dehydrogenation of Methanol to MF over Cu/SBA-15 and Cu-ZnO/SBA-15 Prepared by Grinding and Impregnation
Authors: Huang Min Jian , Li Gong , Li Guo Ru
Published: December 2012

Using SBA-15 molecular sieve as the support, Cu/SBA-15 and Cu-ZnO/SBA-15 catalysts were prepared by grinding and impregnation. They were characterized by XRD, TEM, TPR and nitrogen adsorption/desorption methods. Their catalytic activities of the dehydrogenation of methanol to methyl formate (MF) were studied and compared.The results indicated that the Cu and ZnO in the catalysts prepared by grinding had a worse dispersity than that prepared by impregnation. However, the reduction temperature of the CuO in the catalysts prepared by grinding was obviously lower than that prepared by impregnation and the selectivity to MF can be improved with the adding of ZnO. The experiments showed that the methanol conversion rate and selectivity to MF were 15.23% and 79.81% at 270°C for Cu-ZnO/SBA-15-G prepared by grinding, respectively. For Cu-ZnO/SBA-15-I prepared by impregnation, the methanol conversion rate and selectivity to MF were 13.41 % and 81.31% respectively.
Regional Energy Security Evaluation in China Based on Fuzzy Integral Method
Authors: Hu Jian , Sun Jian Hua , Yan Jian Ming , Liu Zhen , Shi Yu Ren
Published: December 2012

Energy is the foundation of regional economy sustainable development. It is more and more serious of regional energy security problem with the rapid economic growth, industrialization and city development. The concepts of regional energy security and national energy security are analysed by comparison. On the basis, the connotation of regional energy security is defined. According to the characteristic of regional energy security problem, an evaluation model for regional energy security is performed by fuzzy integral. Then, the evaluation model is used on energy security problem of typical area in eastern regions and western regions. The experiment shows that the method not only evaluates the regional energy security, but also provides the reference for energy development strategy and policy making.
Design on Large Power Traction Battery Formation Testing System of Electric Vehicle
Authors: Li Zheng Guo , Zhang Qiang , Zhang Kai
Published: December 2012

Aiming at the current design research status on large power traction battery formation testing system of electric vehicle, this paper presents a system design method based on the management computer, the control computer and the output computer which is 3 layers construction including superior middle and inferior. In the hardware design, high-performance microcomputer is adopted as the main controller, high speed photo electricity coupling separated circuit is employed as the input and output interface, and pulse width modulation control method is used in control algorithm. In the software design, modular design is used to divide the software system into four function parts: data calculating and processing, data displaying, data storing, parameter setting and regulating.. At last, the data analysis of the system experimental results indicates that this kind of design method has a good application foreground.
The Application of Extended CIM in Electric-Vehicle’s Charging-Discharging System
Authors: Wang Ying Hui , Zhao Ming Yu , He Yang , Wang Gang
Published: December 2012

In order to ensure the safety and efficiency of electric-vehicle’s charging-discharging, and control the charging-discharging process according to the electric grid’s condition, multiple applications and systems have been developed for monitoring and managing the EV’s charging-discharging. All of these systems are required for EV charging-discharging data support, so it becomes quite an urgent problem that how to share and exchange EV’s charging-discharging information between different systems. To solve this problem, this paper applies IEC61970 CIM to EV charging-discharging system, extends the CIM to cover all the EV charging-discharging facilities. And then a data center of EV charging-discharging has been developed based on the extended CIM to provide charging-discharging data for other systems through CIS service. The research of this paper provides a unified information model for efficient monitoring and management of EV’s charging-discharging as well as integration of related systems and applications.
Design of Interactive Terminal for Interaction between Electric Vehicles and Grid
Authors: Chu Yi , Zhao Ming Yu
Published: December 2012

Electric vehicle (EV) has become one of the important development direction of the automobile industry generally recognized by the international community, as it has a good environmental effect and the flexible use form of energy. For the realization of the interaction between EV and grid, this paper studies and designs the interactive terminal to balance load and improve utilization of the grid. The terminal adopts high-end ARM platform and embedded Android operating system to realize both-way interaction of information and energy between EV and grid with means of communication such as CAN, 3G and Internet. Based on giving the design ideas of the intelligent terminal overall structure, this paper describes the hardware/software architecture technology, design methods and functions. The interactive terminal can deploy unified charging and discharging of EV according to the control mode of interaction, and give full play to the economic and social benefits of large-scale EV
The Control Strategy and Simulation of Three-Phase Grid-Connected Photovoltaic System
Authors: Su Jian Jun , Hu Men Yue , Gong Hong Yan , Sun Hai Tao , Hu Zhi Jian , Zheng Jie Yun , Zhu Long Zhu , Zhang Cheng Xue
Published: December 2012

Firstly the research situation for grid-connected photovoltaic (PV) is introduced, then, the engineering mathematical model of PV cells is introduced. The perturbation and observation algorithm is chosen as the maximum power point tracking (MPPT) algorithm. The SPWM double-loop control strategy with outer voltage loop and inner current loop is described and a three-phase grid-connected photovoltaic model is established. The simulation results demonstrate the validity and correctness of the simulation model built in this paper.
Design of Electric Vehicle’s Operation Management Platform Based on Cloud Computing and Internet of Vehicle
Authors: Lu Zhi Yuan , He Yang , Zhao Ming Yu , Chu Yi
Published: December 2012

Based on the current research on the application of cloud computing and internet of vehicle, the design of electric vehicle’s operation management platform based on cloud computing is proposed. Firstly, the subsystem function design of electric vehicle’s operation management platform is analyzed, and the formation of platform is introduced. Then, based on theory of cloud computing and internet of vehicle, the software architecture, including core service layer, service management layer and user interface access layer, is built, and the key technology of operation management platform is analyzed. Finally, the system deployment based on private cloud and hybrid cloud is proposed. The research has an important role on the large-scale construction of electric vehicle operation network.
Analysis of the Solar Wall Heat Transfer and Energy Saving of Residential Ventilation
Authors: Wang Yue Ren , Qi Wei , Wu Nan
Published: December 2012

It is the considerable measure that adopting the ventilation solar wall to make up the indoor air in winter because this method embodies the effective use of renewable energy. This paper analyzes the needed volume of make-up air in the different conditions of indoor air exhaust in winter and builds a solar wall to heat the make-up air. Under the conditions of different solar wall size of air channel thickness and so on, Conclusions can be simulated by using CFD software. When the optimum cavity width B is 50mm, the height of air supply outlet D is 30mm and the volume of make-up air is 200 m3/h,the maximum temperature rise of the air rises to 24°C.But when the volume of make-up air is 600 m3/h, there has the best energy-saving effect.