Investigation of the Effect of Using Different Nanofluids on the Performance of the Organic Rankine Cycle

IF 1.7 4区工程技术 Q3 THERMODYNAMICS Heat Transfer Research Pub Date : 2024-01-01 DOI:10.1615/heattransres.2024051490

Meltem ARISU, Tayfun MENLİK

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Abstract

Energy consumption worldwide continues to increase due to factors such as population growth, rural-to-urban migration, technological advancements, and the rising use of technological products that make life easier. As a result, there is a growing demand for renewable energy sources in energy supply, and technological research is conducted to address energy losses and improve existing systems for more efficient energy use. The Organic Rankine Cycle (ORC) is a thermodynamic cycle used for converting heat energy, similar to the Clausius-Rankine cycle. With evolving technology and increasing energy needs, studies related to the Organic Rankine Cycle are of great interest to researchers. This study examines the impact of adding nano-particles to the working fluids used in the ORC system on its performance. Seven different working fluids were selected, including R141b, R123, R142b (isentropic), R22, and R32 (wet), as well as R114 and R600 (dry). Performance was calculated for 14 different nano-fluids created by adding Al2O3 and TiO2 nano-particles to the working fluids. The EES software was used in the analyses. Among the types of working fluids, it was observed that isentropic working fluids were more suitable for the ORC system, particularly R141b and R123. When considering the working fluid type for the ORC system, it was found that isentropic working fluids achieved higher efficiency, followed by dry-type working fluids. The lowest efficiency values were obtained for R22 and R32 working fluids.

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研究使用不同纳米流体对有机郎肯循环性能的影响

由于人口增长、农村人口向城市迁移、技术进步以及越来越多地使用使生活更便捷的技术产品等因素，全球能源消耗持续增长。因此，能源供应中对可再生能源的需求日益增长，人们也在进行技术研究，以解决能源损耗问题，改进现有系统，提高能源利用效率。有机郎肯循环（ORC）是一种用于转换热能的热力学循环，类似于克劳修斯-郎肯循环。随着技术的发展和能源需求的增加，与有机郎肯循环相关的研究引起了研究人员的极大兴趣。本研究探讨了在有机郎肯循环系统所用工作流体中添加纳米颗粒对其性能的影响。选择了七种不同的工作流体，包括 R141b、R123、R142b（等熵）、R22 和 R32（湿）以及 R114 和 R600（干）。通过在工作流体中添加 Al2O3 和 TiO2 纳米颗粒，计算了 14 种不同纳米流体的性能。分析中使用了 EES 软件。在各种工作流体中，等熵工作流体更适合 ORC 系统，特别是 R141b 和 R123。在考虑 ORC 系统的工作流体类型时，发现等熵工作流体的效率更高，其次是干式工作流体。R22 和 R32 工作流体的效率值最低。

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来源期刊

Heat Transfer Research 工程技术-热力学

CiteScore

3.10

自引率

23.50%

发文量

102

审稿时长

13.2 months

期刊介绍： Heat Transfer Research (ISSN1064-2285) presents archived theoretical, applied, and experimental papers selected globally. Selected papers from technical conference proceedings and academic laboratory reports are also published. Papers are selected and reviewed by a group of expert associate editors, guided by a distinguished advisory board, and represent the best of current work in the field. Heat Transfer Research is published under an exclusive license to Begell House, Inc., in full compliance with the International Copyright Convention. Subjects covered in Heat Transfer Research encompass the entire field of heat transfer and relevant areas of fluid dynamics, including conduction, convection and radiation, phase change phenomena including boiling and solidification, heat exchanger design and testing, heat transfer in nuclear reactors, mass transfer, geothermal heat recovery, multi-scale heat transfer, heat and mass transfer in alternative energy systems, and thermophysical properties of materials.