Optimizing the Fresnel-Lens Solar-Concentrator Design for Tracking Error Mitigation in Thermal Applications, Using a Statistical Algorithm
- Авторлар: Hassan Qandil 1, Wang S.1, Zhao W.1
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Мекемелер:
- University of North Texas
- Шығарылым: Том 55, № 2 (2019)
- Беттер: 106-112
- Бөлім: Solar Energy Concentrators
- URL: https://journals.rcsi.science/0003-701X/article/view/149621
- DOI: https://doi.org/10.3103/S0003701X19020075
- ID: 149621
Дәйексөз келтіру
Аннотация
The driving motive of this work is to enhance the tolerability of a flat Fresnel-lens concentrator to tracking errors, without the use of secondary optics or sophisticated, and normally costly, meticulous tracking equipment. This is achieved by optimizing the prismatic geometry of the Fresnel lens through a statistical approach that incorporates laws of light refraction and trigonometry. The proposed design produces high focal heat flux that is more suitable for thermal applications. A comparative simulation analysis was conducted for two case studies from literature, each with a different design method for the Fresnel lens. On basis of equivalent geometric concentration ratio and f-number, the flat-spot lenses, designed by this study, returned higher values of the concentration acceptance product (\(CAP\)). In case #1 of a 212× cylindrical lens with an f-number of unity, an equivalent flat lens by this work almost doubled the \(CAP\) from 0.165 to 0.34. For the design case #2 of a 559× aspheric Fresnel lens made by simple geometrical optics, a 60.7% enhanced \(CAP\) was achieved by this work’s lens, from 0.206 to 0.331, at an f-number of 0.83.
Негізгі сөздер
Авторлар туралы
Hassan Qandil
University of North Texas
Email: weihuan.zhao@unt.edu
АҚШ, 1155 Union Circle, #310440, Denton, Texas, 76203-5017
Shuping Wang
University of North Texas
Email: weihuan.zhao@unt.edu
АҚШ, 1155 Union Circle, #310440, Denton, Texas, 76203-5017
Weihuan Zhao
University of North Texas
Хат алмасуға жауапты Автор.
Email: weihuan.zhao@unt.edu
АҚШ, 1155 Union Circle, #310440, Denton, Texas, 76203-5017
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