Development of micro-scale radial inflow turbine for organic Rankine cycle

2016 International Conference for Students on Applied Engineering (ICSAE) Pub Date : 2016-10-01 DOI:10.1109/ICSAE.2016.7810181

Ayad Al Jubori, R. AL-Dadah, Ayad M. Al Jubori

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引用次数: 1

Abstract

This study describes the development of a micro-radial turbine for organic Rankine cycle powered by low temperature heat source. To achieve the aim, different working fluids with operating conditions were investigated to identify the most efficient turbine for low-grade heat source with temperature less than 85°C. In previous studies related to organic Rankine cycle analysis, the isentropic efficiency of the turbine was assumed constant, while in this work, the isentropic efficiency is calculated at different operating conditions for each working fluid. The ANSYSR17- CFX software is used to perform the three-dimensional computational fluid dynamic analysis of the radial-inflow turbine for a number of organic working fluids (R141b, R245fa and n-pentane) and different operating conditions. The real fluid properties using equations of state were employed and results showed that n-pentane has the highest performance for all operating conditions. The maximum total isentropic efficiency of turbine was about 80.15% with 5.119 kW power output and 10.34% cycle thermal efficiency.

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有机朗肯循环用微尺度径向进水涡轮的研制

本文介绍了一种低温热源驱动的有机朗肯循环微型径向涡轮的研制。为了实现这一目标，研究了不同工况下的工质，以确定温度低于85°C的低品位热源的最高效涡轮。在以往有关有机朗肯循环分析的研究中，涡轮等熵效率假设为恒定，本工作中，计算了不同工况下各工质的等熵效率。采用ansys - 17- CFX软件对径向进流涡轮进行了多种有机工质(R141b、R245fa和正戊烷)和不同工况下的三维计算流体动力学分析。采用状态方程计算了实际流体性质，结果表明，正戊烷在所有工况下都具有最高的性能。汽轮机最大总等熵效率为80.15%，输出功率为5.119 kW，循环热效率为10.34%。

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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2016 International Conference for Students on Applied Engineering (ICSAE)

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