平面线聚焦菲涅尔透镜的聚焦变化研究

Yi Yang; Xinglong Ma; Hongfei Zheng; Yujie Dong; Yang Wu; Nan Lyu

doi:10.19912/j.0254-0096.tynxb.2023-0234

平面线聚焦菲涅尔透镜的聚焦变化研究

Translated title of the contribution: STUDY ON VARIATION OF FOCAL LENGTH OF FLAT-PLATE LINEAR-FOCUSING FRESNEL LENS

Yi Yang^*, Xinglong Ma, Hongfei Zheng, Yujie Dong, Yang Wu, Nan Lyu

^*Corresponding author for this work

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The design parameters of a flat-plate linear-focusing Fresnel lens were analyzed based on the influences of its structure，material refractive index，and tilt incident angle of sunlight on focal length. The analysis aimed to achieve large allowable tilt incident angles and small focal length changing ranges. An example was designed with a width of 200 mm，focal length of 300 mm, and material refractive index of 1.5. The characteristics of the Fresnel lens’focal length variation were examined，and an optimal receiver width and mounting position suitable for the lens were determined by shortening the mounting distance between it and the receiving surface. With an allowable light tilt incident angle range reaching ±40° or more, nearly six hours of daily effective working time can be maintained.

Translated title of the contribution	STUDY ON VARIATION OF FOCAL LENGTH OF FLAT-PLATE LINEAR-FOCUSING FRESNEL LENS
Original language	Chinese (Traditional)
Pages (from-to)	396-400
Number of pages	5
Journal	Taiyangneng Xuebao/Acta Energiae Solaris Sinica
Volume	45
Issue number	6
DOIs	https://doi.org/10.19912/j.0254-0096.tynxb.2023-0234
Publication status	Published - Jun 2024

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10.19912/j.0254-0096.tynxb.2023-0234

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title = "平面线聚焦菲涅尔透镜的聚焦变化研究",

abstract = "The design parameters of a flat-plate linear-focusing Fresnel lens were analyzed based on the influences of its structure，material refractive index，and tilt incident angle of sunlight on focal length. The analysis aimed to achieve large allowable tilt incident angles and small focal length changing ranges. An example was designed with a width of 200 mm，focal length of 300 mm, and material refractive index of 1.5. The characteristics of the Fresnel lens{\textquoteright}focal length variation were examined，and an optimal receiver width and mounting position suitable for the lens were determined by shortening the mounting distance between it and the receiving surface. With an allowable light tilt incident angle range reaching ±40° or more, nearly six hours of daily effective working time can be maintained.",

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author = "Yi Yang and Xinglong Ma and Hongfei Zheng and Yujie Dong and Yang Wu and Nan Lyu",

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doi = "10.19912/j.0254-0096.tynxb.2023-0234",

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T1 - 平面线聚焦菲涅尔透镜的聚焦变化研究

AU - Yang, Yi

AU - Ma, Xinglong

AU - Zheng, Hongfei

AU - Dong, Yujie

AU - Wu, Yang

AU - Lyu, Nan

PY - 2024/6

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N2 - The design parameters of a flat-plate linear-focusing Fresnel lens were analyzed based on the influences of its structure，material refractive index，and tilt incident angle of sunlight on focal length. The analysis aimed to achieve large allowable tilt incident angles and small focal length changing ranges. An example was designed with a width of 200 mm，focal length of 300 mm, and material refractive index of 1.5. The characteristics of the Fresnel lens’focal length variation were examined，and an optimal receiver width and mounting position suitable for the lens were determined by shortening the mounting distance between it and the receiving surface. With an allowable light tilt incident angle range reaching ±40° or more, nearly six hours of daily effective working time can be maintained.

AB - The design parameters of a flat-plate linear-focusing Fresnel lens were analyzed based on the influences of its structure，material refractive index，and tilt incident angle of sunlight on focal length. The analysis aimed to achieve large allowable tilt incident angles and small focal length changing ranges. An example was designed with a width of 200 mm，focal length of 300 mm, and material refractive index of 1.5. The characteristics of the Fresnel lens’focal length variation were examined，and an optimal receiver width and mounting position suitable for the lens were determined by shortening the mounting distance between it and the receiving surface. With an allowable light tilt incident angle range reaching ±40° or more, nearly six hours of daily effective working time can be maintained.

KW - Fresnel lens

KW - focal length change

KW - linear focusing

KW - solar energy

KW - tilted incidence

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平面线聚焦菲涅尔透镜的聚焦变化研究

Abstract

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