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Bionic Photovoltaic Panels Bio-Inspired by Green Leaves

Bionic Photovoltaic Panels Bio-Inspired by Green Leaves
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摘要 In strong solar light, silicon solar panels can heat up by 70℃ and, thereby, loose approximately one third of their efficiencyfor electricity generation. Leaf structures of plants on the other hand, have developed a series of technological adaptations,which allow them to limit their temperature to 40-45℃ in full sunlight, even if water evaporation is suppressed. This is accomplishedby several strategies such as limitation of leaf size, optimization of aerodynamics in wind, limitation of absorbedsolar energy only to the useful fraction of radiation and by efficient thermal emission. Optical and infrared thermographicmeasurements under a solar simulator and in a streaming channel were used to investigate the corresponding properties of leavesand to identify suitable bionic model systems. Experiments started with the serrated structure of ordinary green leaves distributedover typical twig structures and finally identified the Australian palm tree Licuala ramsayi as a more useful bionic model. Itcombines a large area for solar energy harvesting with optimized aerodynamic properties for cooling and is able to restructureitself as a protection against strong winds. The bionic models, which were constructed and built, are analyzed and discussed. In strong solar light, silicon solar panels can heat up by 70℃ and, thereby, loose approximately one third of their efficiencyfor electricity generation. Leaf structures of plants on the other hand, have developed a series of technological adaptations,which allow them to limit their temperature to 40-45℃ in full sunlight, even if water evaporation is suppressed. This is accomplishedby several strategies such as limitation of leaf size, optimization of aerodynamics in wind, limitation of absorbedsolar energy only to the useful fraction of radiation and by efficient thermal emission. Optical and infrared thermographicmeasurements under a solar simulator and in a streaming channel were used to investigate the corresponding properties of leavesand to identify suitable bionic model systems. Experiments started with the serrated structure of ordinary green leaves distributedover typical twig structures and finally identified the Australian palm tree Licuala ramsayi as a more useful bionic model. Itcombines a large area for solar energy harvesting with optimized aerodynamic properties for cooling and is able to restructureitself as a protection against strong winds. The bionic models, which were constructed and built, are analyzed and discussed.
出处 《Journal of Bionic Engineering》 SCIE EI CSCD 2010年第3期284-293,共10页 仿生工程学报(英文版)
关键词 BIONICS photovoltaic panel green leaves heat control Licuala ramsayi bionics photovoltaic panel green leaves heat control Licuala ramsayi
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参考文献12

  • 1Emery K,Burdick J,Caiyem Y,Dunlavy D,Field H,Kroposki B,Moriarty T,Ottoson L,Rummel S,Strand T,Wanlass M.Temperature dependence of photovoltaic cells, modules and systems. Photovoltaic Specialists Conference, Conference Record of the Twenty Fifth IEEE . 1996
  • 2Green M A.General temperature dependence of solar cell performance and implications for device modelling. Progress in Photovoltaics . 2003
  • 3Krebs F C,Jφrgensen M,Norrman K,Hagemann O,Alstrup J,Nielsen T D,Fyenbo J,Larsen K,Kristensen J.A complete process for production of flexible large area polymer solar cells entirely using screen printing-First public demonstration. Solar Energy Materials . 2009
  • 4Tributsch H,Cermak J,Nadezhdina N.Kinetic studies on the tensile state of water in trees. Journal of Physical Chemistry. B . 2005
  • 5C. Li,Y. H. Chen,Y. B. Wang,Z. Iqbal,M. Chhowalla,S. Mitra.A fullerene-single wall carbon nanotube complex for polymer bulk heterojunction photovoltaic cells. Journal of Materials Chemistry . 2007
  • 6Weakliem H A,Redfield D.Temperature dependence of the optical properties of silicon. Journal of Applied Physics . 1979
  • 7Grace J.Plant-Atmosphere Relationships. . 1983
  • 8Kaufmann C A,Neisser A,Klenk R,Scheer R.2</sub> thin film solar cells to flexible substrates using an in situ process control&amp;sid=Thin Solid films&amp;aufirst=Kaufmann C A');&#xA; ">Transfer of Cu (In,Ga)Se<sub>2</sub> thin film solar cells to flexible substrates using an in situ process control. Thin Solid films . 2005
  • 9Neelkanth G Dhere.Presrnt status and future prospects of CIGSS thin film solar cells. Solar Energy Materials . 2006
  • 10Henrion W,Tributsch H.Optical solar energy adaptations and radiative temperature control of green leaves and tree barks. Solar Energy Materials . 2009

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