聚光光伏系统中浸没冷却液体的光学性能分析
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摘要
通过分光光度计采用双光程测试方法获得合成油、醇类、硅油、矿物油4大类液体中10种候选液的光谱透过率。与传统光伏封装材料相比,候选浸没冷却液体的光谱透过率略显优势。基于液浸聚光电池的归一化光电流密度分析得出10种候选液均可用于浸没冷却聚光硅电池,二甲基硅油引起的功率损失最小;除丙三醇外其余9种候选液均可用于浸没冷却聚光三结电池,Therminol VP-1引起的功率损失最小,其次为二甲基硅油。
In order to apply direct liquid immersion cooling to concentrating photovoltaic(CPV)systems with denselypacked cell assemblies,the selection of suitable immersion cooling liquids is critically important. That is as the opticalperformance of the immersion cooling liquids will affect the electrical characteristics of concentrating solar cells. Thespectral transmittances of 10 candidate liquids in the four major classes of synthetic oil,alcohol,silicone oil and mineraloil are obtained by the spectrophotometer using double optical path test method. Their transmittances are proved to beslightly better than those of conventional PV packaging materials. Based on the normalized photocurrent density analysisof liquid immersion concentrator cells,10 kinds of candidate liquids can be used for submerged cooling concentratorcells,and the power loss caused by dimethyl silicone oil is the minimum. Except for glycerol,the remaining ninecandidate liquids can be used for submerged cooled concentrating triple-junction cells. The power loss caused byTherminol VP-1 is the smallest,followed by dimethyl silicone oil.
In order to apply direct liquid immersion cooling to concentrating photovoltaic(CPV)systems with denselypacked cell assemblies,the selection of suitable immersion cooling liquids is critically important. That is as the opticalperformance of the immersion cooling liquids will affect the electrical characteristics of concentrating solar cells. Thespectral transmittances of 10 candidate liquids in the four major classes of synthetic oil,alcohol,silicone oil and mineraloil are obtained by the spectrophotometer using double optical path test method. Their transmittances are proved to beslightly better than those of conventional PV packaging materials. Based on the normalized photocurrent density analysisof liquid immersion concentrator cells,10 kinds of candidate liquids can be used for submerged cooling concentratorcells,and the power loss caused by dimethyl silicone oil is the minimum. Except for glycerol,the remaining ninecandidate liquids can be used for submerged cooled concentrating triple-junction cells. The power loss caused byTherminol VP-1 is the smallest,followed by dimethyl silicone oil.
引文
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[2]Royne A,Dey C J,Mills D R.Cooling of photovoltaic cells under concentrated illumination:A critical review[J].Solar Energy Materials and Solar Cells,2005,86(4):451—483.
[3]Han Xinyue,Wang Qian,Zheng Jun,et al.Thermal analysis of direct liquid-immersed solar receiver for high concentrating photovoltaic system[J].International Journal of Photoenergy,2015,2015:1—9.
[4]Sun Yong,Wang Yiping,Zhu Li,et al.Simulation study of a linear concentrating photovoltaic receiver with direct liquid-immersed solar cells[J].Solar Energy,2016,124:1—14.
[5]Xiang Haijun,Wang Yiping,Zhu Li,et al.3D numerical simulation on heat transfer performance of a cylindrical liquid immersion solar receiver[J].Energy Conversion and Management,2012,64:97—105.
[6]Zhu Li,Boehm R F,Wang Yiping,et al.Water immersion cooling of PV cells in a high concentration system[J].Solar Energy Materials and Solar Cells,2011,95(2):538—545.
[7]韩新月,王一平,朱丽,等.液浸对聚光硅太阳电池电性能的影响[J].太阳能学报,2013,34(5):752—757.[7]Han Xinyue,Wang Yiping,Zhu Li,et al.The effect of dielectric liquids immersion on the electrical characteristics of silicon concentrator solar cell[J].Acta Energiae Solaris Sinica,2013,34(5):752—757.
[8]Looser R,Vivar M,Everett V.Spectral characterisation and long-term performance analysis of various commercial heat transfer fluids(HTF)as directabsorption filters for CPV-T beam-splitting applications[J].Applied Energy,2014,113(1):1496—1511.
[9]Victoria M,Askins S,Domínguez C,et al.Durability of dielectric fluids for concentrating photovoltaic systems[J].Solar Energy Materials and Solar Cells,2013,113:31—36.
[10]Vivar M,Everett V.A review of optical and thermal transfer fluids used for optical adaptation or beamsplitting in concentrating solar systems[J].Progress inPhotovoltaics:Research and Applications,2014,22(6):612—633.
[11]Solutia Inc.Heat transfer fluids-therminol,product datasheet[DB/OL].http://www.therminol.com,2016-04-15.
[12]朱丽,王一平,张志英,等.液浸冷却系统中丙三醇液体的耐受性分析[J].化学通报,2009,(12):1122—1128.[12]Zhu Li,Wang Yiping,Zhang Zhiying,et al.Weatherresistance study of glycerol used in concentrated PVsystem[J].Chemistry,2009,(12):1122—1128.
[13]Shin-Etsu Polymer Co.Ltd.Silicon-KF-96L,productdata sheet[DB/OL].http://www.shinetsu.co.jp/,2016-04-15.
[14]Dirac Delta.Science and engineering encycolpedia[DB/OL].http://www.diracdelta.co.uk,2016-04-15.
[15]Han Xinyue,Wang Yiping,Zhu Li,et al.Reliability assessment of silicone coated silicon concentrator solar cells by accelerated aging tests for immersing in deionized water[J].Solar Energy,2011,85(11):2781—2788.
[16]Ketola B,Mc Intosh K R,Norris A,et al.Silicones for photovoltaic encapsulation[A].Proc 23rd EU PVSEC[C],Valencia,Spain,2008,2969—2973.
[17]Kempe M.Overview of scientific issues involved in selection of polymers for PV applications[A].37th IEEE Photovoltaic Specialists Conference(PVSC)[C],Seattle,USA,2011,000085—000090.
[18]Blakers A W.Efficient 20-50 sun concentrator cells[A].16th EC PVSEC[C],Glasgow,UK,2000,1—4.
[19]天津蓝天太阳科技有限公司.Data sheet LT-CC-100[DB/OL].http://www.tjsolartech.com/index.aspx,2016-04-15.
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