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Design and development of potassium formate based atmospheric water harvester

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  • Ayyagari, Veeresh
  • Hwang, Yunho
  • Kim, Jungho

Abstract

Potassium formate, the potassium salt of formic acid, is an inexpensive, non-corrosive, non-toxic, and bio-degradable desiccant that has not been considered thus far in atmospheric water harvesting applications.ster is proposed that utilizes an aqueous solution of potassium formate as the medium for moisture absorption during the night when the ambient relative humidity is high, and desorption of absorbed moisture from the desiccant solution during the day using solar energy. A simple prototype was constructed that was able to extract 1.9 L of water∙m−2 of solar area∙day−1 with a moisture uptake of 0.34 kgwater∙kgsalt−1at 25 °C and 79% RH and 0.29 kgwater∙kgsalt−1 at 25 °C and 65% RH.

Suggested Citation

  • Ayyagari, Veeresh & Hwang, Yunho & Kim, Jungho, 2021. "Design and development of potassium formate based atmospheric water harvester," Energy, Elsevier, vol. 221(C).
    • Handle: RePEc:eee:energy:v:221:y:2021:i:c:s0360544220328334
    DOI: 10.1016/j.energy.2020.119726
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    References listed on IDEAS

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    1. Kabeel, A.E., 2007. "Water production from air using multi-shelves solar glass pyramid system," Renewable Energy, Elsevier, vol. 32(1), pages 157-172.
    2. William, G.E. & Mohamed, M.H. & Fatouh, M., 2015. "Desiccant system for water production from humid air using solar energy," Energy, Elsevier, vol. 90(P2), pages 1707-1720.
    3. Wang, J.Y. & Wang, R.Z. & Tu, Y.D. & Wang, L.W., 2018. "Universal scalable sorption-based atmosphere water harvesting," Energy, Elsevier, vol. 165(PA), pages 387-395.
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    1. Luo, Jielin & Yang, Hongxing, 2022. "A state-of-the-art review on the liquid properties regarding energy and environmental performance in liquid desiccant air-conditioning systems," Applied Energy, Elsevier, vol. 325(C).
    2. Agrawal, Anshu & Kumar, Amit & Parekh, A.D., 2023. "Experimental investigation of solar driven atmospheric water generation system based on air-to-air heat exchanger," Energy, Elsevier, vol. 271(C).
    3. Harrouz, Jean Paul & Ghali, Kamel & Keniar, Khoudor & Ghaddar, Nesreen, 2023. "Numerical and experimental investigation of thermosyphon-driven liquid desiccant loop performance for sustainable indoor humidity removal," Applied Energy, Elsevier, vol. 343(C).

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