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‘Artificial Transpiration’- device to increase solar-thermal conversion


‘Artificial Transpiration’- device to increase solar-thermal conversion


  • The device, named ‘Artificial Transpiration’ by Zhu Jia and his team from the Nanjing University, is inspired by the transpiration process of trees, an article recently published online by the National Science Review, an English language journal affiliated to the Chinese Academy of Sciences, said.

  • Chinese scientists have developed a new device of 3D hollow-cone structure that can greatly increase the solar-thermal conversion efficiency.

  • It has a special 1D water path within it, which can reduce the energy loss in conduction

·         Performs better outside the lab

  • The cone structure, based on a grapheme film, can collect more sunlight throughout the day when compared with a flat device, as about 10 per cent to 50 per cent of sunlight is diffusive.

  • Thus it performs even better in the real world than in the laboratory, it said.

  • As a result, the device can enhance the solar-thermal conversion rate to 85 per cent, which is much higher than the 40 per cent rate of common devices, it said.

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