Abstract Against the backdrop of the ever growing scientific and public interest in locating alternative sources of clean energy, geared toward the overarching objective of mitigating the harmful implications of greenhouse effects on the environment, this paper proposes one such alternative. In capturing the environmental benefits to be gained from waste heat recovered during a cement industrial process, this paper demonstrates how an Organic Rankine Cycle (ORC) can be a viable source of power production. This owes to its ability to expend both medium and high-grade temperature heat sources. In the process of design and experimentation, this study adopted a hybrid solution using waste heat recovery (WHR) that was combined with a solar field, to transform power in the ORC through a thermal oil loop and produce electricity. The WHR was taken from flue gases of a rotary kiln found in cement industrial processes but that also has the advantage of working across a range of temperatures. These ranged from 250 °C to 380 °C. The solar domain incorporated a Parabolic-Trough Solar Collector (PTSC), with the working fluid R245fa. The performance of each component was then analyzed and optimized. The concluding results of this study evidences that an ORC can ultimately be of significant benefit to industry both economically and environmentally, by generating up to 323 to 360 kW of electricity that is required to power a cement plant, while providing for a payback time period within the range of 3.75 years and a net saving of 280,000 $/year.

中文翻译：

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由混合太阳能集热器和废热回收系统驱动的低品位热有机朗肯循环

摘要 在寻找替代清洁能源来源的科学和公众兴趣日益增长的背景下，为了实现减轻温室效应对环境的有害影响的总体目标，本文提出了一种这样的替代方案。为了从水泥工业过程中回收的废热中获得环境效益，本文展示了有机朗肯循环 (ORC) 如何成为可行的电力生产来源。这归功于它能够同时消耗中温热源和高温热源。在设计和实验过程中，本研究采用了一种混合解决方案，利用废热回收 (WHR) 结合太阳能场，通过热油回路转换 ORC 中的电力并产生电力。WHR 取自水泥工业过程中发现的回转窑的烟气，但它也具有在一系列温度下工作的优势。这些范围从 250 °C 到 380 °C。太阳能域包含一个抛物线槽太阳能收集器 (PTSC) 和工作流体 R245fa。然后对每个组件的性能进行分析和优化。本研究的结论性结果表明，ORC 可产生高达 323 至 360 千瓦的电力，为水泥厂供电，同时提供在3.75 年的范围和 280,000 美元/年的净节省。这些范围从 250 °C 到 380 °C。太阳能域包含一个抛物线槽太阳能收集器 (PTSC) 和工作流体 R245fa。然后对每个组件的性能进行分析和优化。本研究的结论性结果表明，ORC 可产生高达 323 至 360 千瓦的电力，为水泥厂供电，同时提供在3.75 年的范围和 280,000 美元/年的净节省。这些范围从 250 °C 到 380 °C。太阳能域包含一个抛物线槽太阳能收集器 (PTSC) 和工作流体 R245fa。然后对每个组件的性能进行分析和优化。本研究的结论性结果证明，ORC 可产生高达 323 至 360 千瓦的电力，为水泥厂供电，同时提供在3.75 年的范围和 280,000 美元/年的净节省。