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首页> 外文期刊>Journal of Engineering for Gas Turbines and Power >The Application of Rotary Vane Expanders in Organic Rankine Cycle Systems: Thermodynamic Description and Experimental Results
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The Application of Rotary Vane Expanders in Organic Rankine Cycle Systems: Thermodynamic Description and Experimental Results

机译：旋转叶片膨胀机在有机朗肯循环系统中的应用：热力学描述和实验结果

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摘要

Small (10-100 kW) and micro (0.5-10kW) Organic Rankine Cycle (ORC) power systems are nowadays considered for local and domestic power generation. Especially interesting are micropower applications for heat recovery from dispersed low potential (85-150°C) waste and renewable heat sources. Designing and implementing an ORC system dedicated to energy recovery from such a source is difficult. A proper working fluid must be selected together with a suitable expander. Volumetric machines can be adopted as a turbine alternative in small-capacity applications under development, like, e.g., domestic cogeneration. Scroll and screw expanders are a common choice. However, scroll and screw expanders are complicated and expensive. Vane expanders are mechanically simple, commercially available and cheap. This paper documents a study providing the preliminary analysis of the possibility of employing vane-expanders in mini-ORC systems. The main objective of this research was therefore a comprehensive analysis of the use of a vane expander for continuous operation with a low-boiling working fluid. A test-stand was designed and set up starting from system models based on thermodynamic analysis. Then, a series of experiments was performed using the test-stand. Results of these experiments are presented here, together with a model of multivane expanders and a thermodynamic-based method to select the working fluid. The analysis presented in this paper indicates that multivane expanders are a cheap and mechanically simple alternative to other expansion devices proposed for small-capacity ORC systems.
机译：如今，考虑将小型（10-100 kW）和微型（0.5-10kW）有机朗肯循环（ORC）电源系统用于本地和家庭发电。从分散的低电势（85-150°C）废料和可再生热源中回收热量的微功率应用特别有趣。设计和实施专用于从这种能源中回收能量的ORC系统非常困难。必须选择合适的工作液以及合适的膨胀剂。在正在开发的小容量应用（例如家用热电联产）中，容积式机器可以用作涡轮机的替代产品。涡旋膨胀机和螺杆膨胀机是常见的选择。然而，涡旋膨胀机和螺杆膨胀机复杂且昂贵。叶片膨胀机在机械上简单，可商购且便宜。本文进行了一项研究，对在mini-ORC系统中使用叶片膨胀机的可能性进行了初步分析。因此，这项研究的主要目的是对使用叶片膨胀机进行低沸点工作流体连续运行的综合分析。从基于热力学分析的系统模型开始，设计并建立了一个试验台。然后，使用测试台进行了一系列实验。这些实验的结果以及多叶片膨胀器的模型和基于热力学的选择工作流体的方法均在此处介绍。本文提出的分析表明，多叶片膨胀机是为小容量ORC系统提出的其他膨胀装置的廉价且机械简单的替代方案。

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  • 来源
    《Journal of Engineering for Gas Turbines and Power》 |2013年第6期|061901.1-061901.10|共10页
  • 作者

    Zbigniew Gnutek; Piotr Kolasiriski;

  • 作者单位

    Department of Thermodynamics,Wroclaw University of Technology,Institute of Heat Engineering and Fluid Mechanics,Wybrzeze Wyspianskiego 27,Wroctaw 50-354, Poland;

    Department of Thermodynamics,Wroclaw University of Technology,Institute of Heat Engineering and Fluid Mechanics,Wybrzeze Wyspianskiego 27,Wroctaw 50-354, Poland;

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