基于二元共沸工质的OTEC-ORC和涡轮性能改进

IF 2.3 4区工程技术 Q3 ENGINEERING, CHEMICAL

International Journal of Chemical Engineering Pub Date : 2023-03-08 DOI:10.1155/2023/8892450

Q. Ma, Jie-guang Huang, Zezhou Gao, Hui Lu, Hongfeng Luo, Jingru Li, Zhongye Wu, Xinrang Feng

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引用次数: 0

摘要

本文从提高OTEC-ORC效率的角度探讨了二元非共沸工作流体的组成，并设计了与工作流体相适应的涡轮机。研究发现，使用R152a/R32混合物作为工作流体的OTEC-ORC显著高于纯NH3的OTEC-ORC热效率和系统效率，并且确定混合工作流体R152a/R32的最佳组成为85 : 15，热效率和系统效率分别为2.8%和1.7%，与NH3-ORC相比提高了35.7%和151.2%。根据确定的工作流体，对涡轮机进行了一维（1-D）设计和CFD模拟分析仿真。一维计算结果与三维（3-D）结果非常一致。在设计点，涡轮机输出为83.84 kW，等熵效率为87.53%。在偏离设计点，涡轮机具有更好的偏离设计性能，表明所设计的涡轮机也具有良好的适应性。

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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Performance Improvement of OTEC-ORC and Turbine Based on Binary Zeotropic Working Fluid

In this paper, the composition of binary nonazeotropic working fluids is explored from the perspective of improving OTEC-ORC efficiency, and the turbine is designed to accommodate with the working fluid. It is found that the OTEC-ORC using a R152a/R32 mixture as the working fluid is significantly higher than the OTEC-ORC thermal efficiency and system efficiency of the pure NH3, and the optimal composition of the mixed working fluid R152a/R32 is determined to be 85 : 15 with the thermal efficiency and the system efficiency of 2.8% and 1.7%, respectively, improving by 35.7% and 151.2% compared to the NH3 ORC. According to the determined working fluid, a one-dimensional (1-D) design and CFD simulation analysis simulation are carried out on the turbine. The 1-D calculation results are in good agreement with the three-dimensional (3-D) results. At the design point, the turbine output is 83.84 kW, and the isentropic efficiency is 87.53%. At the off-design point, turbines have better off-design performance, indicating that the designed turbine also has good adaptability.

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来源期刊

International Journal of Chemical Engineering Chemical Engineering-General Chemical Engineering

CiteScore

4.00

自引率

3.70%

发文量

审稿时长

14 weeks

期刊介绍： International Journal of Chemical Engineering publishes papers on technologies for the production, processing, transportation, and use of chemicals on a large scale. Studies typically relate to processes within chemical and energy industries, especially for production of food, pharmaceuticals, fuels, and chemical feedstocks. Topics of investigation cover plant design and operation, process design and analysis, control and reaction engineering, as well as hazard mitigation and safety measures. As well as original research, International Journal of Chemical Engineering also publishes focused review articles that examine the state of the art, identify emerging trends, and suggest future directions for developing fields.