bluuebunny/crossref_metadata_2025 huggingface dataset:
Wavelet Module of MATLAB Applies on Wind Turbine
Authors: Guan Xin
Published: August 2011

Because of special running condition, it is very difficult to maintain and detect wind turbines. In order to reduce waste of financial cost and people and cut down cost of maintain and the repair of schedule .In order to change traditional repair of schedule into state repair, We need to improve the inspect accuracy. By introducing the wavelet analysis module of Matlab in the article and according to the analysis of measure vibration signal from SUT-1000 wind turbine which is designed by Shenyang University of Technology, and apply wavelet theory to analyze the data. we can get intuitionistic envelopment spectral line .Therefore, we can get practical and accurate run condition, put forward applicable report, and realize function of inspecting wind turbine on line.
Generation Control Scheduling Model of Three Gorges Power Station during Non-Abandon Water Period
Authors: Wu Xiao Ling , Xiang Xiao Hua
Published: August 2011

With types of power units, huge installed capacity and complicated operation modes, the Three Gorges Power Station (TGPS) is very important in network operation of Yangtze River area. Power forecasting of TGPS plays an important role in protecting the power network operation and shipping, especially for the short-term output forecasting. The water consumption rate of power station is one of the key conditions in short-term generation control system during non-abandon water period. Therefore, in order to develop the generation control scheduling model of TGPS in non-abandon water period, analysis on many factors should be put including: hydraulic turbine characteristic curves of cascade hydropower stations constructed by TGPS and the Gezhouba Power Station; discharge at dam site; water stage of relationship between upstream and downstream; and the last element is tailrace effect from the Gezhouba Power Station to TGPS. The historical operating result shows that the model referred has wide application prospect in production practice for high precision and much exercisable.
Aluminum Hydrogen Energy Industry in China
Authors: Tong Zheng Ming , Liang Shu Jun
Published: August 2011

The real solution to the emissions of carbon dioxide and nitrogen and sulfur oxides is obvious: China needs to break its addiction to fossil fuels. The perfect alternative fuel will be hydrogen. The reaction of water with aluminum and its alloys can generate hydrogen. This paper introduces the concept of aluminum hydrogen energy industry and discusses the development of aluminum hydrogen energy industry in China.
Analysis of Shield Tunnel Stability during Construction Period Using Elliptic Umbilic Catastrophe Model
Authors: Qiang Pei
Published: August 2011

Using the monitoring data, an expression of ground settlement with associated coordinates above shield tunnel during construction was established, in which coefficients were obtained by the least square method. After transforming this expression into a standard form of elliptic umbilic catastrophe model, the instability criterion for the soil above shield tunnel was determined with the analysis of this model. Instability criterion values were thereafter obtained then the soil state would be judged according to these values. Three cases in different regions in China, referred to Bund Channel in Shanghai, metro line 1 in Chengdu City and metro line 4 in Beijing, were presented. They showed that the method developed in this paper was suitable in analyzing and forecasting the stabilities of soil above shield tunnels.
The Operation Optimization Test of Main Steam Pressure on Large Coal-Fired Power Unit
Authors: Kan Wei Min , Yang Zhi Ping , Zheng Li Kun , Hu Yue , Fu Zhong Guang
Published: August 2011

In this paper, a sub-critical 600 MW power generating unit produced by Shanghai Turbine Generator Corporation has been used for the operation optimization test of main steam pressure. The test has chosen seven loads and four run ways during peaking loads. The economical sliding pressure operation curve of peak load unit can be obtained from the test. The experimental results show that the unit should choose rated pressure operation when load is larger than 470MW, and choose two valve points sliding pressure operation when load is under 470MW to get the lowest heat consumption.
Emphasizing the Roll of Ergonomics in Industrial Design and its Wide Application in the Media Industry
Authors: Cheng Chang Xian
Published: August 2011

Today’s industrial design has gone beyond the traditional product design. China is in the transfer process from the world's manufacturing plant to the world's manufacturing center. Chinese manufacturing industry is transiting from mass production and mass marketing to brand competition and design competition; China’s industrial design is moving from design for products and design for industrial enterprises to design for the market and users, and from basic industries- and technology-oriented model to sales- and marketing-oriented and brand- and user-oriented model. The importance of implementing user-friendly design principles and applying ergonomic principles to sustainable design in Industrial design is increasingly becoming the consensus of the industries. In today's information society, the media industry is charged with an irreplaceable task of information manufacture and dissemination. A variety of devices (including electronic, optical, mechanical equipment and instruments, and even household facilities and equipment, etc.) used by the modern media industry need the direct contact, operation or use of the operator. Design and manufacture of these devices need to apply modern ergonomic design theory and research results. In this paper, the importance of ergonomics, the features and research aspects of modern ergonomics, developing trends of ergonomics, and the application of ergonomics in the media industry are described.
Performance Research on the All Aluminum Heat Exchanger of Family Air-Condition
Authors: Wang Rui , Wang Yi Chun , Feng Chao Qing , Zhan Huo Ming , Li Hua Jun
Published: August 2011

Air enthalpy method is used in the contrastive experiment of the new condenser and the common wing-pipe heat exchanger of family air-condition. The refrigerating capacity and EER (Energy Efficiency Ratio) are obtained by the experiment. The conclusion of the experiment shows that the new condenser with small volume and diathermanous area can create more refrigerating capacity, but the total power consumption is basically unchanged, so the EER improved. This kind of all aluminum heat exchanger is the ideal substitute of family air-condition’s wing-pipe heat exchanger.
Output Characteristics Study of V-trough PV Concentration System
Authors: Yan Cui Qiong
Published: August 2011

A V-trough PV system with polysilicon cell array and super cell array has been constructed and tested. Open-circuit voltage, short-circuit current, output power, fill factor and influence of temperature on V-trough PV concentration system have been analyzed. The results indicate that the output power of 10 pieces of polysilicon cell array is 6.198W and it is 1.21 times as that of non-concentration condition. Maximum output power of V-trough PV system with water cooling increase to 8.28W and power increment rate reach 62.67% compared with the non-concentration PV system. For the super cell array with no water cooling, the maximum output power of V-trough PV system varies from 7.834W to 14.223W. The results of this work provide some experimental support to the applications of the V-trough PV system.
Start-Up Strategy to Achieve Excellent Efficiency of Degradation Acetate,Ethanol and Propionate in UASB
Authors: Zheng Ming Yue , Zheng Ming Xia , Wang Kai Jun , Yan Hai
Published: August 2011

The performance of upflow anaerobic sludge blanket (UASB) fed with three metabolic intermediate (acetate, ethanol, and propionate) respectively was studied. The degradation of metabolic intermediate were investigated to discuss the reason for propionate inhibition problem in anaerobic treatment. The hydraulic retention time (HRT) in the reactors started with 8.0h.The yield rate of biogas were 237ml/gCOD, 242ml/gCOD, 218ml/gCOD for acetate, ethanol and propionate, respectively when finishing start-up under OLR of 5.0 kgCOD/(m3·d) (HRT=9.6h).The HRT remained constant 9.6h,and the substrate concentration was gradually increased from 1,000 to 16,000mg/L as COD,and the organic loading rates(OLR) was from 3.0 to 40.0 kgCOD/(m3·d).The maximum propionate concentration was 41.6 gHPr-COD/L at the organic loading rate of 43.9 kgCOD/(m3·d) (HRT, 9.6h) as well as acetate and ethanol.
The Research of Economic Evaluation Method for Green Building
Authors: Yan Bing
Published: August 2011

This paper analyze the economic evaluation method based on the LEED evaluation system, and estimate the benefits arose from green bullding to different people which could promote the development of green building in a healthy way.lt bring in the life-cycle theory and improve the index of economic evaluation of green building evaluation system based on LEED.And advise to analyze the benefit of green building in the way of project goal, to establish a new evaluation method about different people effectively.
Performance Evaluation of Water Asset Management in China
Authors: Zhu Hai Bo , Wang Zhen , Liu Tian Xiao
Published: August 2011

Based on the analysis of water asset management performance indicators, this paper proposes a performance model evaluation of water asset management that based on entropy theory and empirical study of one of the Reservoirs as an example to indicate that the model method is feasible.
Microwave Applied in Coal Desulfurization Process
Authors: Mi Jie , Wei Rui Di
Published: August 2011

In this paper, the desulfurization of Fangshan coal was carried out by tetrachloroethylene extraction under ultrasonic and microwave irradiation. The GC-MS analysis of the tetrachloroethylene extraction reveals that organic sulfur in coal can be removed by tetrachloroethylene extract under ultrasonic and microwave irradiation. It is found that microwave irradiation time has great effect on organic sulfur removal. With the microwave irradiation time increases, the efficiency of organic sulfur removal increases. The desulphurization yield reaches maximum, 45%, when the time is 30 minutes or more. It can be clearly seen that Fangshan coal was oxidated by peroxyacetic acid under ultrasonic and microwave irradiation. From the XPS analysis of the macerals of the coal, most of the inorganic sulfur and organic sulfur are removed, especially thioether and thioalcohol which can be completely removed. These results suggest that microwave is an effective way to remove sulfur in coal.
Comprehensive Evaluation of Marine Cold and Heat Source System
Authors: Fu Wang , Sun Li Ying
Published: August 2011

Application of heat pump technology is a effective way to achieve energy saving and emission reduction.In order to propose the heat pump system suitable for marine air conditioning,this paper takes a bulk carrier as the research object,calculates the annual dynamic cool and heat loads of ship,proposes five kinds of cold and heat source optional schemes and selects the equipments.On this basis,five optional schemes are evaluated by using the method of AHP from the following aspects:economic, energy consumption, environment, weight and size.The result shows that comprehensive properties of adopting double stage coupling water source heat pump in ship are better than other schemes.
Optimization Allocation of Microgrid Capacity Based on Chaotic Multiobjective Quantum Genetic Algorithm
Authors: Wang Rui Qi , Li Ke , Chen A Lian , Zhang Cheng Hui
Published: August 2011

Based on the analysis of water asset management performance indicators, this paper proposes a performance model evaluation of water asset management that based on entropy theory and empirical study of one of the Reservoirs as an example to indicate that the model method is feasible.
The Laboratory Research on Ultra-Low Interfacial Tension Foam Flooding System with High-Temperature and High-Salinity
Authors: Liang Xin , Xiang Ming Hui , Yang Yong , Chen Qi Hua , Shu Zeng Rong
Published: August 2011

To obtain the ultra-low interfacial tension foam flooding system for the real reservoir condition of high-temperature and high-salinity, foam properties and dynamic interfacial tension had been performed by Ross-miles test and spin drop tension meter respectively. Ten types of surfactants were screened by foamability, stability and interfacial tension (IFT) at 85°C, high-salinity with 800 mg/L divalent cations and 30000 mg/L total mineralization. The AOS, AESO and 20YB were selected to compose further anion-nonionic mixture system. Due to AOS had excellent foam properties, AESO could achieve low interfacial tension and 20YB could improve the film quality. Through series complex study, the ultra-low interfacial tension (10-4mN/m order of magnitude) foam system was obtained with the composition of 0.15%wtAOS+0.15%wtAESO+0.11%~0.012%wt20YB for high-temperature and high-salinity, which V foam was 240-235 mL and t0.5was 180-190 min. In addition, the synergistic effect of these surfactants had been described.
Continuous Electrochemical Oxidation of Phenol Using a Three-Dimensional Electrode Reactor
Authors: Liu Zhi Gang , Shi Wei , Li Yan Sheng , Zhu Shao Min
Published: August 2011

The removal of phenol wastewater was experimentally investigated using a three-dimensional electrode reactor with granular activated carbon and titanium filter electrode arrays. The effects of the electric current, the residence time and the initial concentration on the phenol removal were evaluated. For the initial concentration of 490 mg/L, the phenol removal was obtained as 90% under the conditions of electric current 2 A, residence time 40 min. The effluent path of the electrochemical cell was optimized, using the anode effluent instead of the top effluent, where the phenol and COD removal was both increased to 95% and the corresponding energy consumption was decreased from 9.66 to 7.63 kWh/kg COD.
What Role Will Technological Progress Play in Energy-Saving during Chinese Urbanization?
Authors: Li Ai Jun , Li Zheng
Published: August 2011

This study analyzes the effects of technological progress for the elasticity of energy consumption from 2002 to 2030 in China by a dynamic computable general equilibrium model. The technological progress is represented by a combination of industrial technology upgrading and energy efficiency improvement. Household is divided into two groups as rural type and urban type. The parameters about technological progress and urbanization are all introduced exogenously. Simulation results show that vigorously pushing advanced energy efficiency technologies through financial policy incentives is the key to realize effective energy-saving achievement while promoting economic growth in China.
Energy Saving and Payback Period for Retrofitting of Lighting Systems in Taiwan
Authors: Chang Chung Yi , Lin Hsien Te
Published: August 2011

Because of the energy crisis and the low proportion of new buildings in Taiwan, rational use of electricity in existing buildings becomes very important for reducing carbon emissions and combating global climate change. The retrofitting of lighting systems is one of the most widely adopted energy saving measures. This study presents the potential energy saving and payback period of lighting system retrofit through replacing low performance T8 fluorescents with T5 fluorescents and LED indicator lights in the Green Building Renovation Plan. Based on the analysis, this study concludes that lighting system retrofit can achieve significant energy saving ratios of 10-17.5% in daily use. However, the average payback periods of GBRP investment and normal purchase investment are ten years and 7.82 years, respectively. Both exceed the average lifetime of lighting equipment, suggesting that lighting system retrofit is slightly uneconomical because of the low electricity tariff in Taiwan.
Study about Planning and Construction of Urban Based on Eco-City Theory
Authors: Wang Shun Sheng , Gao Chuan Chang
Published: August 2011

Analysis the development and characteristics of eco-city theory，a case study of Zhengzhou new area, research on the practical application about planning and construction of urban based on eco-city theory，results show that：we should make eco-city theory combined with the actual circumstances of our country, and the ecological urban develop toward the healthy direction.
The Application of Surrounding Rock Controlling Technology on Mining of Alluvium Coal Pillar
Authors: Bai Zhong Sheng
Published: August 2011

In the alluvial coal pillar mining process, aiming at water prevention and cure, surrounding rock support, construction technology, safety management and the other main factors of safety mining, and through constant practice, the paper summarized the special measures of rock control on safety mining of alluvium coal pillar in the complex conditions for ensure safe of working face in alluvium corner coal, efficient mining, improve resource recovery. The economic and social effectiveness is remarkable.
Reactive Power Optimization of Hydropower Station Based on Improved Genetic Algorithm
Authors: Tian Wei , Wang Jin Chan , Ye Yu Cheng , Chen Wei
Published: August 2011

In this paper, an improved GA was proposed to minimum the disadvantages of classic GA. This modified GA improved the crossover and mutation strategy by using of sort program to arrange chromosome from big to small. The crossover probability and mutation probability were decided by the numbers of the order. Samples were chosen to take part in interbreeding. The convergence speed and results can be improved in this way. Moreover, premature convergence and local convergence were avoided at the same time. The modified GA was implemented by an optimization program compiled in visual C++ language. It has been successfully applied in the reactive power optimization of a Hydropower station. The results showed the feasibility and validity of this modified genetic algorithm.
SCADA System Used in Controlling the Transfer of Natural Gas from Long Distance
Authors: Zhou Zhi Xia , Yan Jun
Published: August 2011

SCADA System, which is used to control the transfer of natural gas from long distance has been introduced in this paper. The system is based on Modicon TSX Quantum series 140 CPU 113 03 of Schneider as Program Logic Computer, industrial internet as the communication mode, telephone dialing as the supplementary communication mode and Intouch as the makeup software. All of them work together to automatic control and supervise the transfer of natural gas in a long distance.
Diagnosis for Thermal Defects of Pipeline Insulation in Refining Process
Authors: Wu Qing , Dong Xiao Li , Xu Zhen Yu , Liu Xiao Yan , Liu Li Jun , Li Xiao Qing , Xu Ying
Published: August 2011

There are a lot of pipelines whose heat loss exceeds the limit of national standards after they are used a period of time in refining pipeline insulation engineering. Thermal defects are easily found on the pipeline surface by using a infrared thermal imager.There are two kinds of thermal defects on these pipelines. One is settlement of insulation layer; the other is seam in lap joints of insulation protection casing. Numerical simulation is developed in this paper for these two cases. Heat loss and surface temperature of pipelines are calculated to verify if the value has exceeded the limit of national standards. Some improving suggestions are also given in this paper.
Thermal Insulating System Design for the Wellhead of the Snubbing Service Equipment
Authors: Ma Chuan , Liu Li Jun , Dai Zhong Hua , Liu Xiao Yan
Published: August 2011

The unsteady state mathematic model was utilized to compute the transient temperature field and determine the heating power, and then a set of thermal insulating system for the wellhead of the snubbing service equipment was designed and manufactured based on the mapping of the material object. The result shows that the numerical results of the cartridge heater’s temperature field agree with the testing values. The thermal insulating system for the wellhead of the snubbing service equipment meets the needs of the snubbing service in the winter; the system possesses the merits of rapid rate of temperature rise, well thermal insulating, safety and convenience.
Waste Heat Recovery and Reuse of Flue Gas in Copper Pyrometallurgy
Authors: Yu Hai , Wang Lian Yong , Du Tao
Published: August 2011

In the paper, we take current relatively advanced, the most widely used flash smelting furnace, converter and rotary anode furnace as the examples, the waste heat resources of the process of matte smelting, the process of matte converting and the process of fire refining of blister copper in copper pyrometallurgy are analyzed respectively. Meanwhile, based on the way of using waste heat reasonably to suitable heat consumer in production process and the grade recovery principle of energy level matching, the model of waste heat recovery and reuse of flue gas in copper pyrometallurgy is constructed.
Research on R&D Cooperation of Petrochemical Enterprise Based on Game Theory
Authors: Tan Wen Fang , Zhang Biao
Published: August 2011

In this paper, it is researched the cooperated R&D problem in new petrochemical product development for petrochemical enterprise. Based on game theory, a cooperated R&D game theory is established. Given the payoff matrix and the strategy set of this model, and it is analyzed the game process of the two players and the dominant strategy. For the reasons of high development costs, great failure loss, individual limited rationality and lack mutual trust, this dominant strategy cannot be achieved in practice. This paper also provides us a pattern for analyze the cooperated R&D between enterprises and institute.
Measure of Carbon Emissions in Jiangsu Province and Analyses of Factors
Authors: Hua Jian , Ren Jun
Published: August 2011

We calculate the carbon dioxide emissions from the combustion of energy and production process of cement in Jiangsu Province from 1990 to 2009.Through the indicators such as carbon emissions intensity, per capita carbon emissions, we analyze the status and trends of carbon dioxide emissions in Jiangsu Province. Based on the factors of industrial structure, energy structure and high-carbon products, we give some suggestions.
Study of Circuit Number on the Evaporator in CO2 Heat Pump Water Heater
Authors: Liu Kang , Lv Jing , Zhang Song Bo , Yang Jie
Published: August 2011

In the design of a carbon dioxide heat pump water heater evaporator, the effect of the circuit number on the evaporator is investigated numerically by EVAP-COND 3.0 version simulation package of American National Institute of Standards and Technology. It is found that as the circuit number increases the temperature difference between the air and the refrigerant increases, but it reduces the overall heat transfer coefficient. The evaporator capacity will rise firstly, and then drop with the circuit number and achieve the maximum in the optimum circuit number. Therefore, selecting the appropriate circuit number of the evaporator can significantly improve the efficiency and optimize the design.
A ZigBee-Based Indoor Intelligent Lighting System Research and Design
Authors: Lu Chao Ze , Yang Xiang , Pan Wei
Published: August 2011

The traditional lighting control system has many defects such as poor energy-saving effect , comfort , management and control technique. What's more troublesome wiring is also a problem. This paper is based on the ZigBee wireless technology and designed a low-power dissipation intelligent node control hardware platform.Which used the MSP430F2619 for processor of TI company, CC2430 RF( Radio Frequency) chip and silicon controlled dimming circuit. It is designed with software that has different lighting modes according to the different environments.The design achieved the brightness autoregulation of light in different environment- s.Therefore create a comfortable household environment.
Development of Energy Management System Based on SCADA
Authors: Zhang Ping Ze , Gao Quan , Ma Sai
Published: August 2011

SCADA, as the foremost subsystem of energy management system, has the advantages of information integrity and high efficiency, and it can help diagnose system’s faults soon. Now it has become an indispensable tool for power dispatch. Through expounding the power energy supervising system, basic frame and application of common SCADA system was summarized and the configuration of both software and hardware were introduced in detail.
Improved Ghost Plating of Light-Induced Plating on Crystalline Silicon Solar Cells by SiO2/SiN Selective Etching
Authors: Li Tao , Zhou Chun Lan , Liu Zhen Gang , Wang Wen Jing , Song Yang , Gao Zhi Hua , Duan Ye , Li You Zhong
Published: August 2011

In this paper, the ghost plating problems of crystalline silicon solar cells is studied in theory and experiment. After laser doping process, a pretreatment process is needed to remove SiO2 in the heavy doping area and keep SiN mask simultaneously by using chemical solution containing HF. Otherwise, the unexpected non-heavy-doping area would be plated with silver, resulting in the ghost plating problems. The mechanism of HF etching SiO2 and SiN is analyzed and the feasibility of selective etching is discussed. By changing the main aspects of affecting the etching rate, the ghost plating of crystalline silicon solar cells is improved.
Adsorption Applications of Bacillus sp. Biomass for Decolorization of Soluble Reactive Dyes Contaminated Solutions
Authors: Mao Yan Li , Yu Yun , Luo Shi Tian , Lv Xiao Lin
Published: August 2011

The optimal conditions of production of biopolymer by the culture of Bacillus sp.were examined, using molasses wastewater to replace glucose as carbon source and energy source in the culture medium. Results showed that the COD concentration in molasses wastewater favorable for the growth of the Bacillus sp.was 4500 mg•L-1, and inoculum size of 6%(v/v), 28◦C, initial pH 7.0 and shaking speed of 160 r•min-1, under the optimal culture conditions, the highest flocculating activity achieved for Kaolin suspension was 97.5% and 4.0 g biomass /L broth was obtained. The Bacillus sp. biomass was effective in flocculating some soluble reactive dyes in aqueous solution, reactive Light-Yellow K-4G and reactive Turquoise Blue KN-G with a decolorization efficiency of 98.5 and 92.5%, respectively, using 20 mL of the flocculant in 500 mL of 100 mg•L-1 dye solution.
Multi-Channel Data Acquisition and Control System Based on LabVIEW
Authors: Zhang Dao De , Xu Cheng , Wang Qiang , Pan Yu Rong
Published: August 2011

The system is a data acquisition and control system used for multi-channel. It is based on the integration of LabVIEW, PCI data acquisition card and intelligent self-tuning PID. Aiming at the ART’s data acquisition card, the paper introduces on the allocation of LabVIEW and Non-NI data acquisition card. The modular design is adopted to realize real-time acquisition, processing, display, save and error messages for multi-channel signals. Utilizing exported standard signals and real-time signals via data acquisition card, we have controlled furnace temperature by intelligent self-tuning PID and made its range in certain variation change according to standard time temperature curve. And the practical application shows that the system works in the stable condition.
Influence of Air Humidity on Thermal Performance of Radiator in Armored Vehicle
Authors: Xiang Long Yun , Wang Yi Chun , Wang Rui Jun , Sun Xiao Xia , Wang Rui
Published: August 2011

Influence of air humidity on thermal performance of armored vehicle is presented in this paper. Data is processed according to the experiment for research in performance of radiator and the heat, which exchanged in the radiator under conditions of different air flow, is calculated abstractly based on the data. Educed from contrast and analysis of the results, the heat exchanged in the radiator increases along with the increase of air humidity, however, the increase is tiny which is below 3.5%. The actual heat exchanged in the radiator can be predicted through the way of abstract calculation used in this paper.
Vehicle Hybrid Turbocharging System and its Analysis of Energy Flow in Key Condition
Authors: Zhao Fu Zhou , Wang Xiu Min , Zi Kun
Published: August 2011

By comparing the characteristics of various turbocharging system, then hybird turbocharging system is proposed. In principle the technical approach of hybrid turbocharging system is analyzed to solve the steady and transient condition problem about vehicle diesel engine. Then several modes of energy flow about hybrid turbocharging system are analyzed, and calculation processes about each share of the energy flow are given. According to the characteristic of turbocharged diesel engine, the energy flow distribution of the two typical engine conditons is calculated. Analysis of energy flow is of great significance to properly distribute the energy share and improve the performance of the turbocharging system.
Integration of Renewable Energy Technology in Building
Authors: Chang Jing Yi , Kuan Yean Der , Liou Sheng Shian
Published: August 2011

The main “energy saving indicator,” from among nine green building indicators, evaluates the electrical power consumption of air conditioners and lighting. This study developed a small indoor personal office system with a 500W proton exchange membrane fuel cell (PEM fuel cell) as the power source, composed of LED indoor lighting, air fan, LED table lamp, notebook computer, printer, and acoustic equipment. Under continuous operations of 24h, this office system will generate 12kwh of electricity, which reduces 7.656kg of carbon dioxide output. If continuously operated for 1 year, it will generate 4,320kwh electricity, which reduces 2,756.16kg of carbon dioxide output. In addition, the side product water can be recycled as landscape water.
A Study on the Post-Evaluation of the Social Environment of the Cloud Model-Based Wind Power Project
Authors: Niu Dong Xiao , Fang Fang , Li Ying Ying
Published: August 2011

This study is to construct a post-evaluation system for the social environment of the wind power project and make a comprehensive assessment by the introducing the cloud model-based analytic hierarchy process. The process manifests the weight and index evaluation in the form of cloud model, which takes account of both ambiguity and randomness, improves the comprehensiveness and accuracy of the results and provides application and arguments for the method through practical examples.
A Study on Input-Output Efficiency of the Chinese Wind Power Industry Based on Hierarchy Model
Authors: Niu Dong Xiao , Fang Fang , Li Ying Ying , Fan Lei Lei
Published: August 2011

In recent years, wind power is regarded as China's important way of adjustment of energy strategy and development of power mode .To promote the development of the wind power industry, this paper set up the evaluation index system of the input-output efficiency of the Chinese Wind Power industry, and use the Hierarchy Model to evaluation, with the characteristics of wind power industry in our country. Evidence shows: China's wind power industry input-output efficiency of good.
Electricity Consumption Benchmark and Ranking System for Office Buildings in Taiwan
Authors: Su Tzu Ching , Lin Hsien Te
Published: August 2011

Energy use intensity (EUI) is a significant index for energy management in the building sector; however, previous research that determined an EUI benchmark for a type of building resulted in serious problems. Such earlier EUI benchmarks cannot fairly evaluate office buildings with different proportions of parking areas and different numbers of floors, becoming an obstacle for energy management. Therefore, this study proposes an area-weighted office building EUI benchmark that calculates according to office areas and parking areas. This study subsequently surveys the electricity consumption of 58 office buildings in Taiwan to determine the office area EUI benchmark that depends on the number of floors in a building, and suggests a reasonable parking area EUI benchmark. Finally, this study promotes a fairer EUI benchmark and ranking system for office buildings in Taiwan. Such a benchmark and ranking system act as a reference for the promotion of the building energy certificate system in Taiwan.
Electrochemical Characteristics of the Rare Earth Compound Coating on 6061 Aluminum Alloy
Authors: Wen Yu Qing , Meng Hui Min , Shang Wei , Jiang Xiu Juan
Published: August 2011

The composite coatings were prepared on aluminum alloy by anodizing and chemical conversion method. The coatings consisted of a anodic oxide coating and a rare earth conversion coating. The surface morphology and composition of the composite coatings were analyzed by scanning electron microscopy (SEM) and energy dispersive X-rays (EDX). The electrochemical properties of the different samples were researched by Potentiodynamic polarisation and electrochemical impedance spectroscopy in a 3.5-wt.% NaCl solution. The results showed that corrosion current density of the sample with composite coatings was 3.611×10-9 A·cm-2, impedance was 6.107×105 Ω·cm-2. The composite coatings had better corrosion resistance than the sample with anodic oxide film and the aluminum alloy substrate.
Overview of Communication and Control Techniques in the Microgrid
Authors: Mu Shu Juan , Huang Ming , Yang Jing Jing , Yu Jiang , Li Ting Hua , Hu Jing Song
Published: August 2011

Microgrid is a distributed power generation system, and is also an effective solution for the connection of grids with high level of distributed energy resources. This paper reviews the microgrid test beds and demonstrated projections in many countries, with emphasis on the communication and control techniques. We arrive at the conclusion that new strategies for communication and control are urgently needed in future power grid.
Simulation of Rice Straw Oxygen-Steam Gasification in an Entrained-Flow Gasifier Using ASPEN PLUS
Authors: Wu Yuan Mou , Zhou Jin Song , Luo Zhong Yang
Published: August 2011

Biomass oxygen-steam gasification associated with synthesis technology known as indirect biomass liquefaction is regarded as one of the most promising technologies of biomass utilization. In this paper, a comprehensive gasification model was developed for the simulation of rice straw oxygen-steam gasification using ASPEN PLUS. The gasification process was divided into two parts: pyrolysis and gasification. The RYield module was used to simulate the pyrolysis process with an external FORTURN program to calculate the pyrolysis products while the gasification process was calculated by the RCSTR module. With the help of the model, the gasification of rice straw was simulated under different residence time, different temperature and different amount of steam. The results showed that the proper residence time and temperature is 1.5s and 1300°C, respectively. The optimum amount of steam is steam/biomass=0.12 while the addition of oxygen is oxygen/biomass=0.2.
Internal Force and Deformation Analysis of Steel Structure Construction Process of Hefei XINQIAO International Airport Terminal
Authors: Wan Hai Ying , Ma Lin
Published: August 2011

The steel structure engineering of Hefei xinqiao international airport terminal is large span special-shaped steel structure, this paper simulate the construction process and analyze the internal force and deformation. Finite element analysis (FEA) software sap2000 is used to simulate and analyze the steel box girder and tubular truss, the results is used as the basis and guidance of construction monitoring.
A New Model for Energy-Saving in Cast Irons Production Introduced Technology Contribution
Authors: Huang Dan , Zhao Wu , Chen Wei Ping
Published: August 2011

A new model for energy-saving in cast irons production introduced technology contribution has been developed. According to the analysis model, in case of keeping same energy efficiency of device, the higher technological level increases, the easier the R increases; even if keep the same melting and heat treatment devices, significant reduction of production energy consumption would be implemented just depending on the production yield increase. A case study results show that technology measurements which has no direct effect on energy consumption play an important role in energy conservation, where the contribution rates of lost-foam casting and computer technology are 20% and 17%. The technological measurements play an important role in cast irons production which cannot be ignored.
On the Diagnostic Methods of Bayesian-Network in Smart Grid
Authors: Hu Han Mei , Zhao Jun Lei , Tu Ping Wen
Published: August 2011

Aiming at the smart grid self-healing characteristics, puts forward a Bayesian network fault diagnosis method. According to the protection movement signal and the circuit breaker tripping signal, establish the face of components of the smart grid line fault diagnosis model. The fault diagnosis method is real-time and accuracy, and fault-tolerant ability etc. characteristics. This method not only satisfy intelligent power grid self-healing characteristics on fault diagnosis real-time, accuracy and automatic fault diagnosis of the requirements, but also provide the smart grid fault isolation and system of self recover with strong guarantee.
Buoyancy Ventilation Efficiency Analysis of a Conference Hall
Authors: Chien Chun Han , Lin Hsien Te , Chou Jung Hua , Su Tzu Ching
Published: August 2011

This study focuses on the efficiency of passive solar chimney in natural ventilation performance. A case study is conducted for the conference hall at the Magic School of Green Technology (MSGT) in Tainan, Taiwan. The efficiency of the passive solar chimney is evaluated using both computational fluid dynamics (CFD) and full-scale model tests. Simulation and experimental results demonstrate that without the thermal resources of people in the conference hall. The air exchange rates were 5.15ACH and 4.92ACH. With the thermal resources of 200 people in the conference hall, the air exchange rates were as high as 8.62ACH. When the external temperature is lower than 28°C, the internal temperature in conference hall is still in acceptable and comfortable scope. By using the passive solar chimney in the conference hall, the air-conditioning system can be shut off for 4 months and energy consumption can be reduced by roughly 27% annually in Taiwan.
A Study on the Energy Conservation Efficacy of Secondary-Reflection Lighting Design Adopted in a Conference Hall
Authors: Huang Guang Yow , Lin Hsien Te , Su Tzu Ching
Published: August 2011

A conference hall is a large meeting space that requires high-wattage lighting equipment to provide sufficient illumination. Ceiling lights are not easy to maintain and cause glare in the seating area. This study simulates the interior lighting of the International Conference Hall in the Magic School of Green Technology (MSGT) using high efficiency ceramic metal halide lamps that replace the general design luminaires, and PL and fluorescent lamps. We use the secondary reflection of light to reduce glare and improve lighting uniformity. The results show that high efficiency lighting can reduce by 25% the standard lighting equipment and still provide the same illumination levels. Furthermore, the overall conference hall lighting uniformity increases from 0.59 to 0.78.
Study on Evaluation System of Thermal Power Plant Construction Projects Based on Low-Carbon Economy
Authors: Niu Dong Xiao , Song Xiao Hua , Mou Lan , Ye Cai Qin , Fang Fang
Published: August 2011

Effective management and control of carbon emission from thermal power generation is essential for the development of low-carbon economy. In order to establish a comprehensive evaluation model for thermal power plant construction projects under the requirements of low-carbon economy development, this paper firstly analyzed the evaluation objects of thermal power plant projects based on low-carbon economy, then built the evaluation index system of thermal power projects based on that analysis, moreover, by applying Grey AHP method, the comprehensive evaluation model also was built. This evaluation system provides a reference to the evaluation of low-carbon development of thermal power projects.
The Concentration of Air and Pulverized Coal Boiler Optimization Methods and Research
Authors: Cheng Xiao Hong
Published: August 2011

The adjustment of the primary and secondary air speed and air quantity in thermal power plant is generally based on the measurement of static meter to show its working condition. It is difficult to adjust the air-coal parameter of each combustor to a reasonable value according to the static value for no certain relationship between the static value and the air speed is available to calculate the air speed and air quantity. The on-line monitoring system of boiler air-powder computer for real-time monitoring is adopted to keep the boiler in a state of balanced and steady combustion. The steady and accurate monitoring system and the automatic input rate of boiler (100%), which could detect the load distribution, pipe blockage, powder interruption and spontaneous combustion accurately, shows considerable value in energy conservation and great practical value in regard to combustion adjustment and reasonable distribution of air and powder.
Power Flow Calculation of Distribution Network Considering Distributed Generation Switch-In
Authors: Li Zhen , Zhao Cai Hong , Ma Cheng Fei
Published: August 2011

Firstly, the present paper makes a brief introduction to types of the distributed power and the processing mode of PV node in the electricity grid; secondly, the forward and backward substitution method to calculate the power flow has been improved and used to analyze some examples; thirdly and most importantly, taking the multi-node distribution network which incorporates distributed generation (DG) as an example, the author analyzes the influences of DG on load flow distribution and network loss in different positions, capacities and power factors.
Assessment Reasearch about Agricultural Water Level
Authors: Wang Ling Hua , Wang Rui Lian , Ning Pan Hua
Published: August 2011

According to characteristics about the agricultural water, agricultural water level assessment index system was structured, and Analytic Hierarchy Process was used to determine the importance of each hierarchy in the system. The fuzzy scheme optimum method which was adopted to assess the agriculture system utilization water level. So the fuzzy problems about how to use mathematic method to analyse and deal with the agricultural water assessment were solved to a certain extent. The final result of the example indicated that fuzzy comprehension assessment method could reflect utilization water characteristic in different areas and also showed that the method is correct and practical.
Assessment System about the Ecosystem Water Based on AHP-FPP
Authors: Wang Rui Lian , Zhang Chuan , Ning Pan Hua
Published: August 2011

According to characteristics about the ecosystem water，the ecosystem water level assessment index system is structured. We put forward Fuzzy Statistics method to quantify the qualitative indexes in the system, using Analytic Hierarchy Process(AHP) to determine the weight of each hierarchy in the system, adopting Fuzzy Preference Process(FPP) to assess the ecosystem water level. The final conclusion of the example indicates that fuzzy comprehension assessment method can reflect utilization water characteristic in different areas and make reasonable comprehension assessment, also show that the method is practical.
Ecological Hydraulics Radius Model for Estimating Instream Ecological Water Requirement: A Case Application
Authors: Men Bao Hui
Published: August 2011

Based on the theory of ecological hydraulic radius model (EHRM) for estimating watercourse ecological water requirement, the in-stream ecological water requirement for satisfying fish habitat in watercourse is calculated by using the example of Daofu hydrological station in Xianshuihe River at the Western Route First Stage Project of China’s South-to-North Water Transfer Scheme. Meanwhile, in order to check up practicability of this new model, the calculated result is compared with that of Tennant method. The result shows that the watercourse ecological water requirement calculated by EHRM is basic between the minimum ecological water required and condign ecological water requirement calculated by Tennant method. Because of more information of flow velocity for satisfying fish habitat taken into account, the ecological water required calculated by EHRM is more accord with the real instance of Xianshuihe River at the Western Route First Stage Project of China’s South-to-North Water Transfer Scheme. The in-stream ecological flow of every year is less than that of 40%per annual averaged flow during 1965 -1987, the range of percent is 12.0%-33.2%. If the flow is regulated by the calculated by EHRM after the Western Route First Stage Project of China’s South-to-North Water Transfer Scheme will be run, the watercourse ecosystem will be in better function state.
Study of Transverse Section Temperature Distribution in Underground Coal Gasification
Authors: Zha Xiao Xiong , Cheng Shan Shan
Published: August 2011

In order for current laboratory studies of strata performances under high temperature to be applied in Underground Coal Gasification (UCG) technology, the temperature scope (range) of UCG must be studied. Based on the heat conduction differential equation, this paper simulates the transverse section temperature distribution of UCG in the multi-physics coupling field. It demonstrates that the strata properties at a range of two meters are affected by high temperature, and the influence on sandstone is more obvious than that of coal. The temperature curves show a trend of linear to nonlinear as time goes. This paper presents the precedent of using multi-field coupling calculation to simulate UCG.
Experimental Investigation of Sintering Flue Gas Desulfurization with Steel Slag Using Dry CFB Method
Authors: Zhou Jian An , Zhong Sheng Jun , Dang Jun Xiang , Li Xu
Published: August 2011

SO2 Emission of sintering flue gas accounts for more than 70% of total SO2 emission of steel industry. The purpose of this paper was to use steel slag for desulfurization of sintering flue gas. Based on traditional circulating fluidized beds (CFB) for flue gas desulfurization (FGD), a new dry digestion CFB-FGD process was developed. The new process eliminated the traditional digestion procedure, and the functions of the reactor include preliminary dust collection, digestion and desulfurization. An pilot CFB installation with maximum flow rate of 8000 Nm3/h for flue gas desulfurization was established. The desulfurization effects of calces, converter slag and blast furnace slag were investigated under the following experimental conditions: temperature of inlet flue gas, 150 °C; temperature of outlet flue gas, 75 °C. Relative humidity, 13%; flue gas flow rate, 6800 Nm3/h; Ca/S ratio, 1.2. The results showed that all of the desulfurization agents had desulfurization capability and the desulfurization efficiency of calces was the best, followed by converter slag and blast furnace slag. The removal efficiency of steel slag ranged from 75% to 82%. Considering solid waste utilization, the application of steel slag in desulfurization using dry CFB has a promising future.
Experimental Study on a Ground Source Heat Pump System in Cold Area
Authors: Liu Yi , Wang Ya Xuan , Zhang Ya Ning
Published: August 2011

Experiment of a ground source heat pump system in cold area is studied in this paper. The results indicate that when the operation time increases to 100 hours, COPHP (COP of the heat pump) and COPSYS (COP of the system) decrease from 3.54 and 2.63 to 2.53 and 1.92, respectively. The average values of COPHP and COPSYS are 3.1 and 2.3, respectively. COPHP and COPSYS with 2 compressors at work are 11% and 12.2% higher than COPHP and COPSYS with 4 compressors at work, respectively. The average COPSYS with inverters is 6.42% higher than the COPSYS without inverters.