[1]马新灵,连麒飞,雷萌,等.混合工质的选择对ORC系统性能的影响[J].郑州大学学报(工学版),2021,42(06):62-68.[doi:10.13705/j.issn.1671-6833.2021.04.015]
　Ma Xinling,Lian Qifei,Lei Meng,et al.Impacts of Selection of Zeotropic Mixture on Performance of ORC System[J].Journal of Zhengzhou University (Engineering Science),2021,42(06):62-68.[doi:10.13705/j.issn.1671-6833.2021.04.015]
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混合工质的选择对ORC系统性能的影响()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
42卷
期数:
2021年06期
页码:
62-68
栏目:
出版日期:
2021-11-10

文章信息/Info

Title:
Impacts of Selection of Zeotropic Mixture on Performance of ORC System
作者:
马新灵; 连麒飞; 雷萌; 孟祥睿; 魏新利; 李志彬
郑州大学机械与动力工程学院;
Author(s):
Ma Xinling; Lian Qifei; Lei Meng; Meng Xiangrui; Wei Xinli; Li Zhibin;
School of Mechanical and Power Engineering, Zhengzhou University;

关键词:
Keywords:
waste heat utilization;  organic Rankine cycle;  zeotropic mixtures;  grey correlation method
DOI:
10.13705/j.issn.1671-6833.2021.04.015
文献标志码:
A
摘要:
为了探究非共沸混合工质应用于有机朗肯循环（ORC）系统的性能，找出利用混合工质优化目标纯工质的方法，用Aspen Plus软件建立了ORC系统的流程模型，在蒸发温度60～100 ℃下，研究了混合工质和纯工质的热力性能和经济性能。研究结果表明，蒸发温度的增加可以提高ORC系统的热力性能，降低平均化发电成本（LEC）。在研究条件下，最佳循环工质为混合工质3R600a/7R601a，蒸发温度100 ℃时，其净输出功率、热效率和LEC分别为56.59 kW、11.76％和0.1312 $/kW•h，与纯工质R600a相比，净输出功率提高了31.73%，热效率提高了1.17%，平均化发电成本降低了11.06%。通过灰色关联法找到了优化纯工质的方法，即将目标纯工质与其输出功率相似的另一种新工质混合，得到的具有较大温度滑移的混合工质，可改善目标纯工质的性能。
Abstract:
The process model of ORC system was established with Aspen Plus software to investigate the impacts of zeotropic mixtures on system performance. The thermal performance and economic performance of mixtures were studied when 60～100 ℃ evaporation temperature, and the system performance was comprehensively analyzed based on the gray correlation method. The results showed that the performance of many mixtures was better than their pure working fluids, especially 3R600a/7R601a. When evaporation temperature was 100 ℃, the grey correlation grade of 3R600a/7R601a reached the maximum 0.994, and its net output power, thermal efficiency, LEC were 56.59 kW, 11.76%, and 0.1312 width=5,height=12,dpi=110/kWh, respectively. Compared with the pure working fluid R600a, the net output power and thermal efficiency were increased by 31.73% and 11.05% respectively, LEC was decreased by 11.06%. The result showed that the target pure working fluid was mixed with another new working fluid with similar output power to obtain a zeotropic mixture with a large temperature glide, and the zeotropic mixture could significantly improve the performance of ORC system.

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更新日期/Last Update: 2021-12-17