Analysis of solar radiation changes in Chinese solar greenhouses with different roof structures based on a solar radiation model

نویسندگان

چکیده

Chinese solar greenhouses (CSGs) are important agricultural production facilities. Under non-artificial heating conditions, radiation is the only CSGs energy source. It highly to optimally obtain in greenhouse construction and production. In this study, a model for was adopted explore quantities of considering different front roof forms angles. Herein, amounts corresponding five forms, namely, double-section arc, parabolic, oval, linear roofs, compared analyzed during four periods (beginning spring, vernal equinox, beginning winter, winter solstice). found that oval on ground largest 4.44%-23.68% higher than parabolic roofs. addition, cumulative sum light wall also 6.02% 12.08% terms. Moreover, with angles 25°, 30°, 35°. observed amount gradually increases increasing Notably, variation at an angle 35° influences paraboloidal elliptical north greatest extent, which increased by 8.23% 12.74%, respectively. This study confirms role form inclination enhancing level. Keywords: greenhouse, structure, angle, DOI: 10.25165/j.ijabe.20221502.6763 Citation: Liu K, Xu H J, Li H, Wu X, Sang S Y, Gao J. Analysis Solar changes structures based model. Int J Agric & Biol Eng, 2022; 15(2): 221–229.

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ژورنال

عنوان ژورنال: International Journal of Agricultural and Biological Engineering

سال: 2022

ISSN: ['1934-6352', '1934-6344']

DOI: https://doi.org/10.25165/j.ijabe.20221502.6763