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Numerical and experimental research of the characteristics of concentration solar cells

Frontiers in Energy 2021年第2期15卷 279-291页

作者： Zilong WANG Hua ZHANG binlin dou Weidong WU Guanhua ZHANG Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering School of Energy and Power EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China

The development of automatic tracking solar concentrator photovoltaic systems is currently attracting growing *** concentration photovoltaic systems(HCPVs)combining triple-junction InGaP/lnGaAs/Ge solar cells with a concentrator provide high conversion *** mathematical model for triple-junction solar cells,having a higher efficiency and superior temperature characteristics,was established based on the one-diode equivalent circuit cell model.A paraboloidal concentrator with a secondary optic system and a concentration ratio in the range of 100X–150X along with a sun tracking system was developed in this *** GaInP/GalnAs/Ge triple-junction solar cell,produced by AZUR SPACE Solar Power,was also used in this *** solar cells produced by Shanghai Solar Youth Energy(SY)and Shenzhen Yinshengsheng Technology ***.(YXS)were used as comparison samples in a further comparative study at different concentration ratios(200X–1000X).A detailed analysis on the factors that influence the electrical output characteristics of the InGaP/lnGaAs/Ge solar cell was conducted with a dish-style concentrating photovoltaic *** results show that the short-circuit current(Isc)and the open-circuit voltage(Voc)of multi-junction solar cells increases with the increasing concentration ratio,while the cell efficiency(ηc)of the solar cells increases first and then decreases with increasing concentration *** increasing solar cell temperature,Isc increases,while Voc andηc decrease.A comparison of the experimental and simulation results indicate that the maximum root mean square error is less than 10%,which provides a certain theoretical basis for the study of the characteristics of triple-junction solar cell that can be applied in the analysis and discussion regarding the influence of the relevant parameters on the performance of high concentration photovoltaic systems.

关键词： concentration three-junction solar cell mathematical model electrical properties solar energy

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Phase Equilibrium Characteristics of CO_(2)and Ionic Liquids with[FAP]-Anion Used for Absorption-Compression Refrigeration Working Pairs

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Journal of Thermal Science 2021年第1期30卷 165-176页

作者： WU Weidong WANG Li LI Xiang LIU Hui ZHANG Hua dou binlin School of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China

The study of the phase equilibrium characteristics of CO_(2)-ionic liquids(ILs)as new absorption-compression type refrigeration working pairs is of great *** kinds of ILs,i.e.,[emim][FAP],[bmim][FAP]and[hmim][FAP],were chosen as potential *** solubility of CO_(2)in these ILs was measured experimentally within 0 to 5.0 MPa at temperatures of 293.15 K to 333.15 K,and the effects of temperature,pressure,IL anion and cation structure and stirring action on CO_(2)solubility were also discussed and *** results showed that the longer alkyl chains in an identical IL family,the alkyl fluoride group in IL anions and the stirring action by a magnetic stirrer had positive effects on the solubility of CO_(2).In the three ILs,[hmim][FAP]possessed the best performance for CO_(2)absorption;the solubility of CO_(2)reached 0.7641 at a pressure of 5 MPa and temperature of 293.15 K,the maximum solubility measured in this *** CO_(2)-[hmim][FAP]binary mixture is recommended as a potentially applicable working pair for CO_(2)absorption-compression refrigeration systems.

关键词： CO_(2) ionic liquids(ILs) absorption-compression refrigeration working pair phase equilibrium tris(perfluoroalkyl)trifluorophosphate anions([FAP]^(-))

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The regulation mechanism and heat transfer enhancement of composite mixed paraffin and copper foam phase change materials

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Science China(Technological Sciences) 2023年第8期66卷 2346-2360页

作者： YANG HanXue ZHANG GuanHua dou binlin CUI GuoMin YAN XiaoYu LU Wei WANG ZiLong School of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China Environment and Sustainability Institute University of ExeterPenrynCornwall TR109FEUK

Phase change materials(PCMs)have remarkable energy storage capacity and promising applications in the field of thermal control of electronic *** problem of thermal property improvement and heat transfer of PCMs in metal-foam heatsinks is an important task for thermal management of electronic *** paraffin samples were prepared by mixing appropriate proportions of paraffin(mass)at various *** scanning calorimetry analysis revealed that the maximum enthalpy of 206.3 J/g is obtained by mixing 20%of 17°C liquid paraffin and 80%of 29℃ solid *** and cooling cycling tests revealed that mixed paraffin exhibits excellent thermal stability and that the regulation method marginally affects thermal ***,composites were prepared by embedding PCM into a copper foam by melt *** thermal conductivity of the composites increased to 4.35 W/(m K),corresponding to 20 times its original *** addition,density functional theory and experimental results were in good agreement,indicating that the regulation method is practical and effective.

关键词： phase change materials regulation mechanism temperature dependence thermal conductivity heat transfer enhancement

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Accelerated methane storage in clathrate hydrates using surfactantstabilized suspension with graphite nanoparticles

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Chinese Journal of Chemical Engineering 2020年第4期28卷 1112-1119页

作者： Liang Yang Xin Wang Daoping Liu Guomin Cui binlin dou Juan Wang Shuqing Hao Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering School of Energy and Power EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China School of Environmental and Chemical Engineering Shanghai University of Electric PowerShanghai 200090China National Engineering Research Center of Coal Preparation and Purification China University of Mining&TechnologyXuzhou 221116China

In this study,enhanced kinetics of methane hydrate formation in the sodium dodecyl sulfate(SDS)solution with different concentrations of suspended graphite nanoparticles(GNPs)were investigated at 6.1-9.0 MPa and 274.15 *** GNPs with rough surfaces and excellent thermal conductivity not only provided a considerable number of microsites for hydrate nucleation but also facilitated the fast hydrate heat transfer in the suspension *** a relatively low pressure of 6.1 MPa,the suspension with 0.4 wt%of GNPs exhibited the minimum induction time of 22 min and maximum methane uptake of 126.1 cm3·***,the methane storage performances of the suspensions with higher and lower concentrations of GNPs were not *** the applied pressure,the temperature increase arising from the hydrate heat in the suspension system with the optimized concentration(0.4 wt%)of GNPs was more significant than that in the traditional SDS ***,compared with those of the system without GNPs,enhanced hydration rate and storage capacity were achieved in the suspensions with GNPs,and the storage capacities were increased by 3.9%-17.0%.The promotion effect of GNPs on gas hydrate formation at low pressure is much more obvious than that at high pressure.

关键词： methane storage clathrate hydrates formation kinetics suspension graphite nanoparticles

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Thermodynamic Analysis of Packed Bed Thermal Energy Storage System

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Journal of Thermal Science 2020年第2期29卷 445-456页

作者： GUO Huan XU Yujie GUO Cong CHEN Haisheng WANG Yifei YANG Zheng HUANG Ye dou binlin Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China School of the Built Environment University of UlsterCo.Antrim BT370QBUK School of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China

A packed-bed thermal energy storage(PBTES) device, which is simultaneously restricted by thermal storage capacity and outlet temperatures of both cold and hot heat transfer fluids, is characterized by an unstable operation condition, and its calculation is complicated. To solve this problem, a steady thermodynamics model of PBTES with fixed temperatures on both ends was built. By using this model, the exergy destruction, thermocline thickness, thermal storage capacity, thermal storage time, and other key parameters can be calculated in a simple way. In addition, the model explained the internal reason for the change of thermocline thickness during thermal storage and release processes. Furthermore, the stable operation of the PBTES device was analyzed, and it was found that higher inlet temperature of hot air, and lower temperature difference between cold and hot air can produce less exergy destruction and achieve a larger cycle number of stable operation. The work can be employed as the basis of the design and engineering application of PBTES.

关键词： packed bed thermal energy storage thermocline steady thermodynamic analysis stable operation

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Calcium-looping based energy conversion and storage for carbon neutrality-the way forward

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Carbon Neutrality 2022年第1期1卷 99-130页

作者： Zhiwei Ge binlin dou Liang Wang Yulong Ding Haisheng Chen Yimin Xuan Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences No.19(A)Yuquan RdShijingshan DistrictBeijing 100049China Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalian 116023China School of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China Birmingham Centre for Energy Storage Research University of BirminghamEdgbastonBirmingham B152TTUK School of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China.

With the global ambition of moving towards carbon neutrality,this sets to increase significantly with most of the energy sources from *** a result,cost-effective and resource efficient energy conversion and storage will have a great role to play in energy *** review focuses on the most recent developments of one of the most promising energy conversion and storage technologies-the *** includes the basics and barriers of calcium-looping beyond CO_(2) capture and storage(CCS)and technological solutions to address the associated challenges from material to ***,this paper discusses the flexibility of calcium-looping in the context of CO_(2) capture,combined with the use of H_(2)-rich fuel gas conversion and thermochemical heat *** take advantage of calcium-looping based energy integrated utilization of CCS(EIUCCS)in carbon neutral power generation,multiple-scale process innovations will be required,starting from the material level and extending to the system level.

关键词： Calcium-looping Thermal energy conversion and storage Fossil fuels decarbonization Renewable energy electrification Solid oxide fuel cells Carbon neutrality

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污水污泥磷形态亚临界水热转化研究

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化工学报 2024年第8期75卷 2970-2982页

作者：郑晓园蔡炎嶙应芝王波豆斌林上海理工大学能源与动力工程学院上海200093

利用外源氮气加压的方式实现了水热过程温度-压力解耦,考察了亚临界水热过程有机物组成和初始水热压力对污水污泥中磷形态转化的影响,同时验证了该过程中生成蓝铁矿的可行性。污泥模化物水热实验表明,初始水热压力强化了磷富集于水热炭... 详细信息

利用外源氮气加压的方式实现了水热过程温度-压力解耦,考察了亚临界水热过程有机物组成和初始水热压力对污水污泥中磷形态转化的影响,同时验证了该过程中生成蓝铁矿的可行性。污泥模化物水热实验表明,初始水热压力强化了磷富集于水热炭中,促进了葡萄糖和蛋白质转化为还原性物质,从水热炭中观察到较强的蓝铁矿X射线衍射峰。城市污泥水热实验表明,水热处理有利于磷富集于水热炭中,压力强化了磷向水热炭迁移,总磷(TP)浓度从31.45 mg/g(0.1MPa)提升到39.68 mg/g(1.0 MPa)。水热温度110℃时,增加初始水热压力促进了污泥中Fe(Ⅲ)-P向Fe(Ⅱ)-P转化,1.0 MPa水热炭中Fe(Ⅱ)-P浓度为原始污泥的6.31倍。提高初始水热压力促进了污泥中碳水化合物和蛋白质等有机物分解形成有机酸,使得水热液pH降低;蛋白质转化导致水热液中NH^(+)_(4)-N浓度升高。同时,水热液氧化还原电位升高,说明有机酸等还原性物质被消耗,促进了三价铁还原,致使水热炭中Fe(Ⅱ)-P浓度升高,有利于蓝铁矿生成。增压条件下,污泥水热炭XRD衍射图中观察到了蓝铁矿的特征峰,说明采用温度-压力解耦水热方法可以生成蓝铁矿。本研究为污泥磷资源回收提供了新思路。

关键词：温度-压力解耦氧化还原电位还原废物处理回收

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生物炭辅助水电解制氢的特性

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化工进展 2021年第9期40卷 4823-4829页

作者：耿震应芝郑晓园高立杨景洋豆斌林上海理工大学能源与动力工程学院上海市动力工程多相流动与传热重点实验室上海200093

利用H型电化学池,在低温下研究稻壳水热生物炭(HB)和热解生物炭(PB)辅助水电解制氢的特性,采用电化学工作站对炭浆液进行LSV、EIS以及产氢特性测试,并结合XPS、FTIR、BET、XRD和SEM表征,分析两种生物炭的电化学反应特性,并探讨了生物炭... 详细信息

利用H型电化学池,在低温下研究稻壳水热生物炭(HB)和热解生物炭(PB)辅助水电解制氢的特性,采用电化学工作站对炭浆液进行LSV、EIS以及产氢特性测试,并结合XPS、FTIR、BET、XRD和SEM表征,分析两种生物炭的电化学反应特性,并探讨了生物炭理化性能对其氧化过程的影响规律。结果表明:HB中丰富的—OH基团使得阳极起始电位非常低,而PB有良好的孔隙结构和高比表面积,因此在较高阳极电位(>1.2V ***)下的反应活性较强;生物炭浆液的溶液电阻和电荷传递电阻随着反应温度的升高而减小;生物炭氧化反应活化能随着阳极电位的增高呈下降趋势;硅酸盐成分对生物炭氧化有一定阻碍作用,PB酸洗后表面官能团暴露有利于其氧化且使电流密度增大,但酸洗会清除HB中易氧化基团,导致其电流密度下降;相同条件下PB较HB的产氢率更高。

关键词：制氢热解水热电化学生物质

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填充金属泡沫铜对相变材料在半圆柱容腔中传热机理的研究

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西安交通大学学报 2023年第2期57卷 21-30页

作者：孙向昕张华王子龙豆斌林张冠华上海理工大学能源与动力工程学院上海200093 上海市动力工程多相流动与传热重点实验室上海200093

为研究不同金属泡沫铜填充率下金属泡沫铜对石蜡融化过程的传热规律,设计并搭建了一套可视化蓄能实验装置,并建立了对应的数学传热模型,分析了不同填充率下复合相变材料在融化过程中温度分布、固液相界面、速度矢量、液相分数和平均Nu... 详细信息

为研究不同金属泡沫铜填充率下金属泡沫铜对石蜡融化过程的传热规律,设计并搭建了一套可视化蓄能实验装置,并建立了对应的数学传热模型,分析了不同填充率下复合相变材料在融化过程中温度分布、固液相界面、速度矢量、液相分数和平均Nu的变化,得到了不同填充率下金属泡沫铜对石蜡相变过程的强化传热机理,并进行了实验验证。结果表明:当金属泡沫铜的填充率从0增大至1.28%时,复合相变蓄热材料的融化时间从901 s缩短至830 s,较纯石蜡减少了7.88%,而当泡沫铜填充率为1.28%时,石蜡内部温度为12.6 K,梯度最小;平均Nu从24.89下降到3.27,下降了86.9%。由模拟结果可得,填充率为0.43%、1.28%的复合相变材料液化速率较纯石蜡分别提高了1.61%、7.11%,这说明金属泡沫铜的填充率越大,强化传热效果越好。

关键词：石蜡泡沫金属自然对流强化传热数值模拟

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多功能军用飞机地面液冷车研制与实验

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制冷学报 2019年第5期40卷 155-160,166页

作者：盛健张华吴兆林豆斌林周志钢上海理工大学能源与动力工程学院

为满足新型战机在地面待飞时对机载液冷系统的地面保障需求,本文设计开发并试制了飞机地面液冷车,分别对电源动力系统、冷却液输送系统、制冷加热系统(单级蒸气压缩制冷循环+电加热器)、电气控制系统和车载底盘及厢体5部分进行了实验研... 详细信息

为满足新型战机在地面待飞时对机载液冷系统的地面保障需求,本文设计开发并试制了飞机地面液冷车,分别对电源动力系统、冷却液输送系统、制冷加热系统(单级蒸气压缩制冷循环+电加热器)、电气控制系统和车载底盘及厢体5部分进行了实验研究。结果表明:样车实现了液冷车补液、液冷车内循环、液冷车对机载液冷系统的加液/排液和外循环供液保障等功能。在环境温度为5℃的外循环制热和30℃的外循环制冷时,使机载液冷系统达到设定温度(制热时加热至15℃,制冷时冷却至10℃),分别需要24 min和20 min,冷却液循环体积流量为200 L/min,温度波动在±0.5℃以内。

关键词：飞机地面保障压缩式制冷系统载冷剂

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