Integration of the beam-down technology into SOLATOM's linear Fresnel solar field: Design and experimental results

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2024-11-05 DOI:10.1016/j.csite.2024.105424

Sebastián Taramona , Jesús Gómez-Hernández , Javier Villa Briongos , Agustín Mingot , Miguel Frasquet

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Abstract

The beam-down linear Fresnel solar field (BDLFR) is a concentrating solar technology that can irradiate linearly a heat flux on a ground receiver. This technology is developed for thermally processing high-density materials up to temperatures of 150–300 °C, such as asphalt aggregates. Here, the linear beam-down technology has been scaled-up and tested. SOLATOM's commercial linear Fresnel reflector has been re-adapted to a BDLFR. This demonstrator loop is located in Universitat Politècnica de València (39.47° N, 0.37° W) and consists of ten linear mirrors 50 cm wide, curved along the transversal axis, and oriented clockwise 18° from the East-West axis. Different beam-down configurations were studied for the design conditions, and once the design was established, it was built using ten flat 15 cm wide mirrors and coupled to a SOLATOM XL module. The modified solar field was tested on day 269 and the obtained heat flux was measured, achieving a peak of 4100 W/m² for a direct irradiance of 640 W/m², in two adjacent normal distributions due to misalignments and errors in the installation of beam-down. This was contrasted with Monte Carlo ray-tracing simulations, and with proper mirror alignment it is expected to achieve 7750 W/m² under similar conditions.

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将束下技术集成到 SOLATOM 的线性菲涅尔太阳能场中：设计和实验结果

光束向下线性菲涅尔太阳场（BDLFR）是一种聚光太阳能技术，可在地面接收器上线性照射热通量。这项技术是为热处理温度高达 150-300 °C 的高密度材料（如沥青集料）而开发的。在这里，线性光束向下技术已经进行了放大和测试。SOLATOM 的商用线性菲涅尔反射器已被重新改装为 BDLFR。该示范环路位于瓦伦西亚理工大学（北纬 39.47°，西经 0.37°），由 10 个 50 厘米宽的线性反射镜组成，沿横向轴弯曲，与东西轴成顺时针方向 18°。针对设计条件研究了不同的光束下射配置，设计方案确定后，使用十面 15 厘米宽的平面镜构建了光束下射系统，并与 SOLATOM XL 模块耦合。在第 269 天对修改后的太阳场进行了测试，并测量了所获得的热通量，在直接辐照度为 640 瓦/平方米的情况下，热通量峰值为 4100 瓦/平方米，在两个相邻的正态分布中，由于光束下射安装的错位和误差，热通量峰值为 4100 瓦/平方米。这与蒙特卡洛射线追踪模拟进行了对比，如果镜面对准正确，预计在类似条件下可达到 7750 瓦/平方米。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.