SIMULATION STUDY ON KEY METEOROLOGICAL FACTORS AFFECTING ATMOSPHERIC TRANSMITTANCE

Wang Chuanhui; Shen Yanbo; Jia Beixi; Hong Mei; Ailiyaer Aihaiti

doi:10.19912/j.0254-0096.tynxb.2024-1312

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (12) : 378-384. DOI: 10.19912/j.0254-0096.tynxb.2024-1312

SIMULATION STUDY ON KEY METEOROLOGICAL FACTORS AFFECTING ATMOSPHERIC TRANSMITTANCE

Wang Chuanhui¹, Shen Yanbo^2,3, Jia Beixi², Hong Mei⁴, Ailiyaer Aihaiti³

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Abstract

Based on the hourly observations of surface temperature, air pressure, relative humidity, visibility, and other data from 170 meteorological stations in China from 2016 to 2023, the atmospheric transmittance under different distances between heliostats and receivers was calculated using the SMARTS model. A sensitivity experiment was conducted on typical representative stations. The average atmospheric transmittance under a distance of 1km between heliostats and receivers nationwide is generally between 70% and 90%. Regions with abundant solar energy resources, such as the Tibetan Plateau, northwest China, Inner Mongolia, and parts of northeast China, have higher atmospheric transmittance, exceeding 85%. After sunrise, the atmospheric transmittance at each representative station rapidly decreases and then gradually increases, with the lowest values appearing in the morning. Stations with lower visibility exhibit greater daily variations in atmospheric transmittance. Atmospheric transmittance is higher in the summer half-year and lower in the winter half-year. The sensitivity experiments indicate that atmospheric transmittance increases logarithmically with visibility. The impacts of other factors on atmospheric transmittance are also related to visibility. Lower visibility increases the sensitivity of atmospheric transmittance to changes in other factors. Atmospheric transmittance decreases with increasing relative humidity.

Key words

solar energy / solar irradiance / numerical simulation / solar thermal electric / atmospheric transmittance / sensitivity analysis

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Wang Chuanhui, Shen Yanbo, Jia Beixi, Hong Mei, Ailiyaer Aihaiti. SIMULATION STUDY ON KEY METEOROLOGICAL FACTORS AFFECTING ATMOSPHERIC TRANSMITTANCE[J]. Acta Energiae Solaris Sinica. 2025, 46(12): 378-384 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1312

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