Abstract

This work introduces an innovative methodology to enhance the efficiency of solar Parabolic Trough Collectors by integrating corrugated tube receivers accompanied by conical strip inserts. Conventional optimization techniques involving adjustments in size, material composition, and insert configurations often necessitate supplementary energy input. A concept centered around augmenting turbulence was introduced, employing corrugated tube receivers to address this challenge. The study encompassed empirical investigations employing three corrugated copper tube receivers, each possessing distinct pitches (8 mm, 10 mm, and 12 mm) while maintaining uniform corrugation heights (2 mm). These experiments were conducted within a regime of laminar flow conditions characterized by Reynolds numbers spanning from 700 to 2000. The primary objective was to identify the most favorable absorber geometry, subsequently coupled with three varying pitches of conical strip inserts (20 mm, 30 mm and 50 mm) to intensify heat transference. The findings unveiled that the corrugated tube with an 8 mm pitch and 2 mm corrugation height, combined with a conical strip insert possessing a pitch of 20 mm, exhibited promising results. This specific amalgamation yielded remarkable enhancements in the augmented Nusselt number (132%), friction factor (38%), and thermal efficiency (9%) in contrast to the unadorned tube operating under analogous conditions. These outcomes underscore the substantial potential of this pioneering approach in significantly elevating the overall performance of solar parabolic trough collectors.

中文翻译：

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使用波纹管接收器提高太阳能抛物面槽式集热器效率的机器学习预测

摘要

这项工作引入了一种创新方法，通过集成带有锥形条插入件的波纹管接收器来提高太阳能抛物面槽式集热器的效率。涉及尺寸、材料成分和刀片配置调整的传统优化技术通常需要补充能量输入。引入了以增强湍流为中心的概念，采用波纹管接收器来应对这一挑战。该研究包括采用三个波纹铜管接收器的实证研究，每个接收器具有不同的节距（8 毫米、10 毫米和 12 毫米），同时保持统一的波纹高度（2 毫米）。这些实验是在雷诺数从 700 到 2000 的层流条件下进行的。主要目标是确定最有利的吸波器几何形状，随后与三种不同节距的锥形条插入件（20 毫米、30 毫米和50毫米）以加强传热。研究结果表明，节距为 8 毫米、波纹高度为 2 毫米的波纹管与节距为 20 毫米的锥形条插入件相结合，显示出令人鼓舞的结果。与在类似条件下运行的未经修饰的管相比，这种特定的合并在增强努塞尔数 (132%)、摩擦因数 (38%) 和热效率 (9%) 方面产生了显着的增强。这些结果强调了这种开创性方法在显着提升太阳能抛物面槽式集热器的整体性能方面的巨大潜力。