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	1. Study on Production Efficiency of New Energy in China
	Wang Xinping,Liu Ping
	Energy Science and Technology 09 September 2015
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	Abstract:In order to improve the developing efficiency of new energy and avoid high investment, high consumption of new energy in the process of development，it is necessary to analyze the efficiency of new energy. Based on the relevant data of different new energy including wind energy, nuclear energy and biomass energy from 2007 to 2013, and using data envelopment analysis method, from the two dimensions of horizontal and vertical, this paper analyzed and compared the production efficiency, and revealed the existing problems of new energy in the process of production. According to the analysis results, the corresponding policies and suggestions were put forward to optimize the allocation of resources and management efficiency of China's new energy resources so as to provide reference for the formulation of related policies in China.
	TO cite this article:Wang Xinping,Liu Ping. Study on Production Efficiency of New Energy in China[OL].[ 9 September 2015] http://en.paper.edu.cn/en_releasepaper/content/4653842


	2. Smoothing effect of the aggregated photovoltaics power output using mesoscale data: A comparative analysis in the Mediterranean and China
	YANG Peijin,GAO Zhiqiu,George Caralis
	Energy Science and Technology 04 March 2015
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	Abstract:A mesoscale atmospheric model is applied in the Mediterranean and China in order to analyse and understand the smoothing effect of the aggregated photovoltaics power output. Systematic application of a Mesoscale Weather Prediction Model for one year, in Mediterranean and China, provides simultaneous information of solar radiation in selected points. The hourly time-series data of solar radiation and the estimated energy output of photovoltaics are analysed to show the temporal and spatial variability of solar energy in different time and space scales. Distributed solar generation is today the most common type of decentralized energy production. The results of the current analysis could be useful for power system operators to improve the design and operational strategy of power system with large photovoltaics integration. The parallel analysis in China and Mediterranean and comparisons between sub-regions, show that there is a positive impact thanks to the integration of photovoltaics in wider geographical areas and this information should be definitely taken into consideration from system operators and policy makers towards large scale photovoltaics integration into a large power system.
	TO cite this article:YANG Peijin,GAO Zhiqiu,George Caralis. Smoothing effect of the aggregated photovoltaics power output using mesoscale data: A comparative analysis in the Mediterranean and China[OL].[ 4 March 2015] http://en.paper.edu.cn/en_releasepaper/content/4633117

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	3. The role of excessive lithium in preparation of 0.4Li2MnO3•0.6LiNi2/3Mn1/3O2 cathode material for lithium-ion batteries
	LI Xiaowa,GU Dawei,LI Jishu,SHEN Linjiang
	Energy Science and Technology 08 February 2015
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	Abstract:In this paper，lithium-rich layered oxides 0.4Li2MnO3•0.6LiNi2/3Mn1/3O2 material was synthesized via a sol-gel process. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The particle size of the 0.4Li2MnO3•0.6LiNi2/3Mn1/3O2 materials is about 200-500 nm. The as-obtained material shows an alkaline characteristic. By means of our analyses, it is confirmed that the lithium carbonate is formed generally in the electrode material of 0.4Li2MnO3•0.6LiNi2/3Mn1/3O2. A series of 0.4Li2MnO3•0.6LiNi2/3Mn1/3O2 materials with different lithium contents were synthesized to investigate the alkaline characteristic of the samples. The amount of lithium content used in the preparation affects the order of layer structure, which is correlated to the electrochemical performance of the samples. The use of excessive lithium in preparation of the samples is an effective method to improve the electrochemical performance of 0.4Li2MnO3•0.6LiNi2/3Mn1/3O2 electrode material.
	TO cite this article:LI Xiaowa,GU Dawei,LI Jishu, et al. The role of excessive lithium in preparation of 0.4Li2MnO3•0.6LiNi2/3Mn1/3O2 cathode material for lithium-ion batteries[OL].[ 8 February 2015] http://en.paper.edu.cn/en_releasepaper/content/4632112


	4. Theoretical mathematic wake model and its application in reducing energy assessment
	GE Litao,UCHIDA Takanori,OHYA Yuji
	Energy Science and Technology 21 October 2014
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	Abstract:Currently, most commercial wind power software are using mathematic wake model for the energy assessment and optimizing the layout of the wind farm. I proposed a new mathematics wake model theoretically based on Theorem of Momentum combined with Actuator Disk Model. This model can calculate the velocity profile of the cross section of the wake not only average results. Two special cases are considered. one is the velocity reduction more than 30% which makes the theorem of momentum invalid. The other is the case of the lateral wind turbine impact. The intermittency of wind power production is analyzed in the research and the new make model applications are highlight.
	TO cite this article:GE Litao,UCHIDA Takanori,OHYA Yuji. Theoretical mathematic wake model and its application in reducing energy assessment[OL].[21 October 2014] http://en.paper.edu.cn/en_releasepaper/content/4614133


	5. The SOC Estimation for power battery using KF method which parameters are updated by least square method
	Tong Meng,Pang Yingzhou,Tian Jiantao
	Energy Science and Technology 15 July 2014
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	Abstract:In this article we first introduced some methods for estimating battery's SOC and their advantages and shortcomings respectively.Then with experimatal data,we proved that battery model 's parameters are time viriant.So fixed parameter Kalman Filter will not suitable, then we come up with a new estimating algorithm named adaptive Kalman Filter(APKF),which associates two algorithms-Kalman Fliter and Least Square method. Kalman Filer estiamtes SOC of battery,while Least Square method updatas parameters used in Kalman Filter.At last we used battery's discharging data to test whether this new alorithm takes effect. And the results produced by Ah-counting method was viewed as a reference because of constant current discharging situation. Then according to the estimating results, the results using produced by APKF has much smaller deviation than that produced by fixed parameters Kalman Flier.
	TO cite this article:Tong Meng,Pang Yingzhou,Tian Jiantao. The SOC Estimation for power battery using KF method which parameters are updated by least square method[OL].[15 July 2014] http://en.paper.edu.cn/en_releasepaper/content/4604285


	6. OPTIMIZING ANTENNA STRUCTURE FOR ASPHALT MIXTURE RECYCLING BASED ON MICROWAVE HEATING
	Tongsheng Sun
	Energy Science and Technology 23 June 2014
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	Abstract:In this pTo improve the uniformity of the temperature and electromagnetic fields of asphalt mixtures heated by microwave, the structure of a horn antenna is examined. The length and width of the feed waveguide are calculated as 85 and 55 mm, respectively, according to waveguide theory. The height of the antenna only slightly influences gain distribution according to the radiated electromagnetic field. The length-width ratio of the aperture plane of the antenna affects the uniformity of distribution of the electromagnetic field. When the ratio is the same as that of the feed waveguide, the gain of the electromagnetic field is the most evenly distributed. The farther the ratio deviates from that of the feed waveguide, the more intensively the electromagnetic field transmits. However, the simulation result indicates that the antenna with the most uniform distribution of electromagnetic field reflects the most energy.
	TO cite this article:Tongsheng Sun. OPTIMIZING ANTENNA STRUCTURE FOR ASPHALT MIXTURE RECYCLING BASED ON MICROWAVE HEATING[OL].[23 June 2014] http://en.paper.edu.cn/en_releasepaper/content/4601999


	7. Ni-Co-B catalyst promoted Thermal Decomposition of Composite NaNH2-NaBH4 used as Hydrogen Storage Material
	BAI Ying,WU Feng,YANG Jianhu,WU Chuan,BAO Liying
	Energy Science and Technology 21 March 2014
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	Abstract:NaNH2 and NaBH4 are structured as a composite hydrogen storage material, NaNH2-NaBH4. To improve the thermal decomposition kinetics of NaNH2-NaBH4, which is crucial to hydrogen releasing performance, Ni-Co-B is selected as a catalyst. To get the catalyst-promoted light-weight hydrogen storage materials, the composite hydrogen storage system was synthesized via a ball milling method with NaNH2, NaBH4 and Ni-Co-B. X-ray diffraction patterns show that the crystal structure of the NaNH2-NaBH4 is well kept after adding catalysts. In addition, Na3BN2 and metal Na are detected as a by-product in the Ni-Co-B promoted NaNH2-NaBH4 (2/1) through the thermal decomposition process. In addition, TG-DTA analysis indicates that the main decomposition stages of the metal boride promoted NaNH2-NaBH4 materials are split into three stages. Furthermore, the catalytic effects on the thermal decomposition kinetics are evaluated. The activation energy of the Ni-Co-B promoted NaNH2-NaBH4 below 250oC is 99KJ/mol, which are only 62.0% of that of the pristine NaNH2-NaBH4 (2/1), and implying better kinetics at low temperature decomposition range.
	TO cite this article:BAI Ying,WU Feng,YANG Jianhu, et al. Ni-Co-B catalyst promoted Thermal Decomposition of Composite NaNH2-NaBH4 used as Hydrogen Storage Material[OL].[21 March 2014] http://en.paper.edu.cn/en_releasepaper/content/4590679


	8. Electric Field Analysis of AC Line Insulators by Symmetric Property
	LI Shiqiong,WANG Zezhong
	Energy Science and Technology 03 March 2014
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	Abstract:The electric field of transmission lines insulators is open field. Open field calculation must demarcate the border. It's a boundary value problem. The calculation accuracy of open field is in contradiction to computational complexity. According to symmetry property analysis the computational complexity can be reduced. The real and imaginary parts of three-phase voltage phasors have symmetry property respectively. Based on the symmetry property and symmetrical structure of three-phase electric power system, the electric field computation module could be reduced to only 1/4 of the general model, so the computational complexity could be reduced greatly. In order to analyze the electric field distribution along the insulators, the computation module included insulators, transmission lines, tower, floor, and 90m interspaces around the insulators. The numerical calculation method was FEM. The calculation results were consistent with the factual electric field distribution. The method could be used for modeling of other three-phase electric field. The advantage of the model was the computational complexity was lower than other FEM with truncation boundary conditions, but the calculation accuracy was equal.
	TO cite this article:LI Shiqiong,WANG Zezhong. Electric Field Analysis of AC Line Insulators by Symmetric Property[OL].[ 3 March 2014] http://en.paper.edu.cn/en_releasepaper/content/4588011


	9. Numerical Simulation of Wake and Array of Double Wind Turbine
	YANG Rui,XIA Weiwei,ZHANG Shenglong,WANG Jiuxin,XU Shihai
	Energy Science and Technology 01 March 2014
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	Abstract:In order to use the wind resources reasonable and reduce the wake effects on wind turbine performance.The aerodynamic interaction between two turbines in both co-axial and stagger arrangement was simulated using the Fluent.Putting forward suggestions to the optimization of wind farm layout.The results show that downstream turbine makes the upstream diverging wake to be convergence when co-axial wind conditions, and the output of downstream turbine is affected by upstream wake when the spacing is less than 5D.The wake field become more diffused after pass the downstream turbine ,and the area of diverging wake become larger than the wake of upstream turbine mainly due to the increase of turbulence intensity. The greater fatigue load impact on the downstream turbine .Due to flow field were extruding by the wake effect of the reference turbine when stagger arrangement wind conditions,the interface of wake has a complex velocity field.
	TO cite this article:YANG Rui,XIA Weiwei,ZHANG Shenglong, et al. Numerical Simulation of Wake and Array of Double Wind Turbine[OL].[ 1 March 2014] http://en.paper.edu.cn/en_releasepaper/content/4587922


	10. Hierarchical porous Li4Mn5O12 nano/micro structure as superior cathode materials for Li-ion batteries
	FU Yao,JIANG Hao,ZHANG Ling,HU Yanjie,LI Chunzhong
	Energy Science and Technology 24 February 2014
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	Abstract:To overcome the disproportionation reaction and Jahn-Teller distortion of Mn3+ in LiMn2O4 cathode materials, we demonstrate a facile route to synthesize hierarchical porous Li4Mn5O12 nano/micro structure, which consists of numerous well-crystallized nanoparticles with diameters of 20-30 nm. The unque structure combines the advantages of both nanostructure and microstructure. When applied as cathode materials for Li-ion batteries, it exhibited a very high specific capacity of 161 mAh g-1 (theoretical value: 163 mAh g-1) with intriguing rate performance and cycling stability.
	TO cite this article:FU Yao,JIANG Hao,ZHANG Ling, et al. Hierarchical porous Li4Mn5O12 nano/micro structure as superior cathode materials for Li-ion batteries[OL].[24 February 2014] http://en.paper.edu.cn/en_releasepaper/content/4587083

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