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Numerical simulation of a trapezoidal cavity absorber for a linear Fresnel reflector 线性菲涅耳反射器梯形腔吸收器的数值模拟
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893621
Yanhua Lai, Shuping Che, Mingxin Lu, Zhen Dong, Gu Song, Chunyuan Ma
{"title":"Numerical simulation of a trapezoidal cavity absorber for a linear Fresnel reflector","authors":"Yanhua Lai, Shuping Che, Mingxin Lu, Zhen Dong, Gu Song, Chunyuan Ma","doi":"10.1109/ICMREE.2013.6893621","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893621","url":null,"abstract":"A trapezoidal cavity absorber for a linear Fresnel reflector concentrator is analyzed and optimized via CFD simulation. The heat loss coefficient is introduced, the influence of ambient temperature, absorber temperature, cavity depth, inclination of side walls, insulation thickness, glass window and emissivity of selective absorption coating have been studied. The results show that radiation dominate the cavity heat loss, and heat loss through the glass window is higher than through the insulation layer; among these factors, impact of emissivity of selective absorption coating and insulation layer are greater than the other factors. In this work, cavity with a 100mm depth shows the best thermal performance.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"16 1","pages":"89-93"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81179263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Characterization of the hydrolysis of corn stover catalyzed by inorganic Fe salt for biogas production 无机铁盐催化玉米秸秆水解制气的研究
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893673
Xiaoyan Yu, Runjuan Wang, Jun Qi, Xuebin Lu
{"title":"Characterization of the hydrolysis of corn stover catalyzed by inorganic Fe salt for biogas production","authors":"Xiaoyan Yu, Runjuan Wang, Jun Qi, Xuebin Lu","doi":"10.1109/ICMREE.2013.6893673","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893673","url":null,"abstract":"Two inorganic salts, FeCl<sub>3</sub> and Fe(NO<sub>3</sub>)<sub>3</sub>, were chosen as catalysts to determine their effects on the hydrolysis of corn stover, and the results indicated that Fe(NO<sub>3</sub>)<sub>3</sub> was one of the most efficient catalyst for the hydrolysis of hemicelluloses. The kinetics of the hydrolysis reaction of corn stover catalyzed by Fe(NO<sub>3</sub>)<sub>3</sub> were investigated at different temperatures. The results showed that two-fraction model fitted very well the hydrolysis reaction of hemicelluloses catalyzed by Fe(NO<sub>3</sub>)<sub>3</sub>, and the kinetic parameters for this model were obtained by nonlinear regression using the Newton's method. The activation energies for the hydrolysis of hemicelluloses in corn stover was 91.79 kJ/mol calculated by the classic Arrhenius equation. Optimum pretreatment conditions were 0.05 mol/L Fe(NO<sub>3</sub>)<sub>3</sub> at 150 °C for 16.5 min, which obtained the maximum xylose yields 91.3% of initial xylan.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"36 1","pages":"313-317"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81198554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on combustion and emission of diesel engine using micro-emulsified ethanol-diesel fuel 使用微乳化乙醇-柴油燃料的柴油机燃烧与排放研究
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893654
P. Sun, Chen Chen, Lihua Ye, Jia-quan Wang
{"title":"Study on combustion and emission of diesel engine using micro-emulsified ethanol-diesel fuel","authors":"P. Sun, Chen Chen, Lihua Ye, Jia-quan Wang","doi":"10.1109/ICMREE.2013.6893654","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893654","url":null,"abstract":"The study was aimed at determining the influence of Micro-emulsified ethanol-diesel fuel on specific fuel consumption, heat release rate and emissions of engine. The engine tests were performed on a four-cylinder, water-cooled, natural aspirated diesel engine. Using E0 (neat diesel fuels), E6(S), E11(S) and E11(C). The result showed that thermal efficiency and exhaust emission (NOx and smoke) of micro-emulsified ethanol-diesel fuel were higher than diesel. While the specific fuel consumption, CO and HC emission of micro-emulsified ethanol-diesel fuel were higher than that of diesel. The particle sizes of emulsified ethanol fuels was larger than that of diesel fuel.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"6 1","pages":"228-231"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79690085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
An effective method for simulation and estimation of dye-sensitized solar cells parameters 染料敏化太阳能电池参数的一种有效模拟和估计方法
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893607
Kejian Yin, Zhiqiang Hu, Shuwen Jiang, G. Liu, Wenyuan Gao, D. Yang, Ying Qin, Xiaowei Xiong
{"title":"An effective method for simulation and estimation of dye-sensitized solar cells parameters","authors":"Kejian Yin, Zhiqiang Hu, Shuwen Jiang, G. Liu, Wenyuan Gao, D. Yang, Ying Qin, Xiaowei Xiong","doi":"10.1109/ICMREE.2013.6893607","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893607","url":null,"abstract":"A computer simulation and calculation method has been proposed in this paper to provide an effective and simple way to estimate the five parameters of dye-sensitized solar cells including photocurrent, reverse saturation current, diode ideality factor, series resistance and parallel resistance of the output characteristic equation. The computer program which was used to calculate these parameters automatically was written in the VB compiler environment. With the program we can get five parameters within several seconds and the maximum error is only about 5.6% which is much smaller than those gotten by computer simulation methods until now. Combining with practical experiment, this method was proved to be an effective and quick way to get the five parameters of DSSC and can aid to analyze their influence to the output V-I characteristics.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"144 1","pages":"26-30"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77934912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of poly-acrylic acid (PA) additives on the rheology of coal water slurries 聚丙烯酸(PA)添加剂对水煤浆流变学的影响
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893777
Xiaohua Wu, W. Pan, Yehui Mao
{"title":"Effect of poly-acrylic acid (PA) additives on the rheology of coal water slurries","authors":"Xiaohua Wu, W. Pan, Yehui Mao","doi":"10.1109/ICMREE.2013.6893777","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893777","url":null,"abstract":"Recently coal water slurry (CWS) is restarted to arouse people's attention. With the development of CWS technology, many additives were researched. Based on lots of experiments, poly-acrylic acid (PA) additives were synthesized. In this paper, the rheology of coal water slurries from two Chinese coal samples by adding PA additives and naphthalene additive respectively are studied. Under the same conditions, for Baori and Changcun coal samples, comparing with naphthalene, the dosage of PA additives in CWS lowers 40%~51% and the coal concentration of CWS increased by 1%~5%. Based on the analysis of structure characteristic of PA, it is speculated that the better rheology of CWS adding PA additives was because they had flexible structure and more adsorptive sites and could adsorb on the surface of coal effectively and enhance the hydrophilicity of coal surface obviously.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"2 1","pages":"716-720"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82963498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The thermal kinetics of Huangling coal pyrolysis 黄岭煤热解热动力学研究
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893771
Shengli Feng, Xiang-rong Liu
{"title":"The thermal kinetics of Huangling coal pyrolysis","authors":"Shengli Feng, Xiang-rong Liu","doi":"10.1109/ICMREE.2013.6893771","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893771","url":null,"abstract":"By using the thermal gravimetric technique, the decomposition process of Huangling coal at three different particle size and heating rate was investigated. The experimental results show that the coal pyrolysis process is strongly affected by heating rate and particle size. As the heating rate increases, the final weight loss decreases and the DTG peak removes toward higher temperature. As the particle size decreases, the temperature at the point where the pyrolysis rate reaches the maximum increases and the maximum rate of weight loss decreases. The apparent activation energy values of the coal pyrolysis process were calculated by Kissinger's and Ozawa's methods. The calculation results demonstrate that the apparent activation energies of the 0.20-0.45mm size coal sample and the 0.45-0.90mm size coal sample are the lowest and highest respectively.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"87 1","pages":"690-693"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83439787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Three-phase photovoltaic grid-connected inverter based on feedforward decoupling control 基于前馈解耦控制的三相光伏并网逆变器
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893714
Ti-Chen Huang, Xinchun Shi, Yuwei Sun, Dan Wang
{"title":"Three-phase photovoltaic grid-connected inverter based on feedforward decoupling control","authors":"Ti-Chen Huang, Xinchun Shi, Yuwei Sun, Dan Wang","doi":"10.1109/ICMREE.2013.6893714","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893714","url":null,"abstract":"Based on the analysis of operating principle of two-stage photovoltaic grid-connected inverter, the mathematical model of three-phase grid-connected inverter under dq synchronous rotating reference frame is set up, and the feed-forward decoupling control strategy of three-phase photovoltaic grid-connected inverter is deduced, and the overall control strategy of two-stage photovoltaic grid-connected inverter is proposed in this paper. The control strategy consists of MPPT(Maximum Power Point Tracking) loop, DC voltage outer loop, AC current inner loop. This control strategy not only realizes the decoupling control of active power and reactive power, but also has the characteristics of simple control and high control accuracy and so on. Finally, the control strategy proposed in this paper is applied in 5kW photovoltaic grid-connected inverter. The precision and effectiveness of this control strategy are verified by the experiments. The system is proved to be steady and dynamic.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"76 1","pages":"476-480"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83858763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 28
The calculation of thermodynamic properties Of R290-R744 using PT equation of state 用PT状态方程计算R290-R744的热力学性质
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893782
L. Zhang, Lihong Yu, Weihua Shu
{"title":"The calculation of thermodynamic properties Of R290-R744 using PT equation of state","authors":"L. Zhang, Lihong Yu, Weihua Shu","doi":"10.1109/ICMREE.2013.6893782","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893782","url":null,"abstract":"The PT equation of state is used in this paper to calculate the thermodynamic properties of propane and carbon dioxide binary mixture. The properties of the mixture of propane and carbon dioxide with three different composition are also studied using PT equation of state and van der Waals mixing rules. The calculating data are compared with the data obtained using software NIST REFPROP 8.0. Results show that the maximum relative error of properties for both saturated liquid and saturated gas is less than 1.471%. And the minimum average relative error is 0.177%. And the maximum average relative error is 0.799%. The computation is accomplished by the program with Visual interface, which makes the calculation process more convenient. And the results are with high precisions.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"29 1","pages":"740-744"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83789487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Butanol production of Clostridium pasteurianum SE-5 from transesterification reaction solution using fermentation and extraction coupling system 利用发酵-萃取耦合体系从酯交换反应溶液中生产巴氏梭菌SE-5丁醇
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893641
Jie Zhang, Mintian Gao, Dongliang Hua, Yan Li, Haipeng Xu, X. Liang, Yuxiao Zhao, Fuqiang Jin, Lei Chen, Guangfan Meng, Hongyu Si, Xiao-dong Zhang
{"title":"Butanol production of Clostridium pasteurianum SE-5 from transesterification reaction solution using fermentation and extraction coupling system","authors":"Jie Zhang, Mintian Gao, Dongliang Hua, Yan Li, Haipeng Xu, X. Liang, Yuxiao Zhao, Fuqiang Jin, Lei Chen, Guangfan Meng, Hongyu Si, Xiao-dong Zhang","doi":"10.1109/ICMREE.2013.6893641","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893641","url":null,"abstract":"This study investigates the capability of the Clostridium pasteurianum SE-5 to produce butanol using transesterification reaction solution (TRS) directly, while the crude glyecerol as the sole carbon source and biodiesel as the extractant. The biodiesel: aqueous phase volume ratio (BAPVR) has a significant effect on butanol production. While the BAPVR was adjusted to 1:1, 89.1 g crude glycerol/L was exhausted and 24.6 g butanol/L was produced with more than 50% of the butanol was extracted into the biodiesel. The results suggested that C.pasteurianum SE-5 could produce butanol from TRS directly using fermentation and extraction coupling system.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"1 1","pages":"174-178"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89221962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Synthesis of dimethyl carbonate from methanol, propylene oxide and carbon dioxide over KF/Al2O3 甲醇、环氧丙烷和二氧化碳在KF/Al2O3上合成碳酸二甲酯
2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI: 10.1109/ICMREE.2013.6893776
Zhaolong Xu, Jianqiang Yu, Yan Zhang, Shuhui Xu
{"title":"Synthesis of dimethyl carbonate from methanol, propylene oxide and carbon dioxide over KF/Al2O3","authors":"Zhaolong Xu, Jianqiang Yu, Yan Zhang, Shuhui Xu","doi":"10.1109/ICMREE.2013.6893776","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893776","url":null,"abstract":"In this paper, a series of basic catalysts were prepared by impregnation of KF onto γ-Al<sub>2</sub>O<sub>3</sub>. The one-pot synthesis of dimethyl carbonate (DMC) from methanol, propylene oxide (PO) and carbon dioxide has been investigated using the KF/Al<sub>2</sub>O<sub>3</sub> as catalysts. It was found that the main factors influencing the yield of DMC and the conversion of PO are the base amount of the catalysts. Higher amount of the catalyst is of beneficial for the improvement of reaction activity. Among the catalysts studied, 17.5%KF/γ-Al<sub>2</sub>O<sub>3</sub> showed a competitive and superior reaction activity.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"5 1","pages":"712-715"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80073304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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