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Experimental analysis of a solar interfacial evaporation under high power concentrator

Author

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  • Chen, Can
  • Liang, Kai
  • Huang, Jiguang
  • He, Shuyu
  • Zhang, Heng
  • Chen, Haiping

Abstract

Solar-driven interfacial evaporation in solar distillers is recently intensively investigated. This work presents a new distiller system based on bottom-heating/interfacial evaporation process driven by high power concentrated solar energy. This system applies Annual Fresnel solar concentration and a circular Fresnel lens, increasing input solar energy. The 1 D water supply wick is elected as the interfacial evaporator to satisfy water evaporation demand by capillary suction. Solar distillers with high-power concentrator are experimentally tested and the results are discussed in this work. This work aims at analyzing the bottom-heating/interfacial evaporation performance under concentrated sunlight. The concentration ratio of an Annual Fresnel solar concentration and a circular Fresnel lens is 62.4. Further optimization of the distiller is carried out according to the concentrators and low ambient temperature requirements of interfacial evaporation. Performances of different distillers are compared. The results show that, the cumulative freshwater productivity of the interfacial evaporation and bottom-heating distiller are 21.25 kg/(m2·day) and 15.98 kg/(m2·day), respectively. The maximum gain output ratio of the interfacial evaporation is 72.1%, higher than the bottom-heating distiller. The maximum temperature of interfacial evaporation surface is 81.53 C∘.

Suggested Citation

  • Chen, Can & Liang, Kai & Huang, Jiguang & He, Shuyu & Zhang, Heng & Chen, Haiping, 2024. "Experimental analysis of a solar interfacial evaporation under high power concentrator," Energy, Elsevier, vol. 295(C).
    • Handle: RePEc:eee:energy:v:295:y:2024:i:c:s0360544224008363
    DOI: 10.1016/j.energy.2024.131064
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