INVESTIGATION OF DROPS&#x02019; CHARACTERISTICS FOR THERMAL RADIATION

Yuan Yang; Zhang Dan; Han Wei; Tu Maoping; Wang Yixiao

doi:10.19912/j.0254-0096.tynxb.2023-1234

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (11) : 401-410. DOI: 10.19912/j.0254-0096.tynxb.2023-1234

INVESTIGATION OF DROPS’ CHARACTERISTICS FOR THERMAL RADIATION

Yuan Yang¹, Zhang Dan¹, Han Wei², Tu Maoping¹, Wang Yixiao¹

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Abstract

Direct heating of water droplets by thermal radiation is the key process in incorporating solar energy to achieve green production in many industrial applications, such as desalination, solar energy storage and carbon capture. A calculation model based on geometrical optics and thermal radiation transfer theory is established for radiative transfer process among droplets under incidence of external radiation. Four distributions of drops, such as chessboard, staggered chessboard, sector, as well as random are selected. According to which, drops’ radiation absorption characteristics （absorption distance, mean temperature increase rate, absorption rate） are studied in conditions of absorption coefficient ranging from 1 to 1000 m^-1, droplet diameter ranging from 0.1 to 1 mm, refractive index ranging from 1.1 to 2.0 and distribution density ranging from 0.006 to 0.461. Results suggest that fast and efficiently heat up of drops could be realized simultaneously through raising absorption coefficient, increasing distribution density by further atomization, and appropriately enhancing refractive index at the same time.

Key words

radiation / absorption / drops / temperature increase rate / drops’ distribution;

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Yuan Yang, Zhang Dan, Han Wei, Tu Maoping, Wang Yixiao. INVESTIGATION OF DROPS’ CHARACTERISTICS FOR THERMAL RADIATION[J]. Acta Energiae Solaris Sinica. 2024, 45(11): 401-410 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1234

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