Energy Matching for Boosting Water Evaporation in Direct Solar Steam Generation

Xiaojiang Mu, Yufei Gu, Pengfei Wang, Jiaqi Shi, Anyun Wei, Yongzhi Tian, Jianhua Zhou, Yulian Chen, Jiahong Zhang, Zhiqiang Sun, Jing Liu, Biaolin Peng, Lei Miao

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


Energy matching strategy is verified as an effective method for significant improvement of evaporation rate in direct solar steam generation (DSSG). By adjusting the solid–liquid interface through bilayer structure, the water transport speed from reservoir to evaporation surface is controlled to reduce the required energy (RE) for closely matching with that of input energy (IE). The highest evaporation rate can reach up to 2.22 kg m−2 h−1 under one-sun illumination, which is improved by 40% through energy matching. A solar-to-vapor energy conversion efficiency of 93.2% is obtained. It is also highly effective in practical applications including desalination, sewage treatment, oil–water separation, and heavy metal ions treatment. This concept displays a balance between the energy needed for water waiting to be evaporated and the IE. It can inspire more ideas for researchers to accelerate the development of DSSG.

Original languageEnglish
Article number2000341
JournalSolar RRL
Issue number10
Publication statusPublished - 2020 Oct 1


  • desalination
  • direct solar steam generation
  • energy matching
  • oil–water mixture
  • tofu brine

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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