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Dynamic test on waste heat recovery system with organic Rankine cycle 被引量：3

Dynamic test on waste heat recovery system with organic Rankine cycle
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摘要 Dynamic performance is important to the controlling and monitoring of the organic Rankine cycle(ORC) system so to avoid the occurrence of unwanted conditions. A small scale waste heat recovery system with organic Rankine cycle was constructed and the dynamic behavior was presented. In the dynamic test, the pump was stopped and then started. In addition, there was a step change of the flue gas volume flow rate and the converter frequency of multistage pump, respectively. The results indicate that the working fluid flow rate has the shortest response time, followed by the expander inlet pressure and the expander inlet temperature.The operation frequency of pump is a key parameter for the ORC system. Due to a step change of pump frequency(39.49-35.24 Hz),the expander efficiency and thermal efficiency drop by 16% and 21% within 2 min, respectively. Besides, the saturated mixture can lead to an increase of the expander rotation speed. Dynamic performance is important to the controlling and monitoring of the organic Rankine cycle（ORC） system so to avoid the occurrence of unwanted conditions. A small scale waste heat recovery system with organic Rankine cycle was constructed and the dynamic behavior was presented. In the dynamic test, the pump was stopped and then started. In addition, there was a step change of the flue gas volume flow rate and the converter frequency of multistage pump, respectively. The results indicate that the working fluid flow rate has the shortest response time, followed by the expander inlet pressure and the expander inlet temperature.The operation frequency of pump is a key parameter for the ORC system. Due to a step change of pump frequency（39.49-35.24 Hz）,the expander efficiency and thermal efficiency drop by 16% and 21% within 2 min, respectively. Besides, the saturated mixture can lead to an increase of the expander rotation speed.
作者 王志奇 刘力文 夏小霞 周乃君
机构地区 Institute of Mechanical Engineering Xiang Tan University School of Energy Science and Engineering Central South University
出处 《Journal of Central South University》 SCIE EI CAS 2014年第12期4607-4612,共6页 中南大学学报（英文版）
基金 Project(2009Gk2009)supported by the Science and Technology Department Funds of Hunan Province,China Project(12C0379)supported by the Scientific Research Fund of Hunan Province,China Project(13QDZ04)supported by the Scientific Research Foundation for Doctors of Xiang Tan University,China
关键词 organic Rankine cycle waste heat recovery dynamic performance 余热回收系统 朗肯循环 动态测试 废热回收系统 转换频率 阶跃变化 多级泵 膨胀机
分类号 TK115 [动力工程及工程热物理—热能工程]
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参考文献22

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共引文献2

同被引文献26

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引证文献3

二级引证文献2

Journal of Central South University
2014年 第12期

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