Thermo-Economic Analysis of Organic Rankine Cycle for Power Generation

2018 IEEE 7th International Conference on Power and Energy (PECon) Pub Date : 2018-12-01 DOI:10.1109/PECON.2018.8684150

Kankeyan Thurairaja, A. Wijewardane, Chathura Ranasinghe

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引用次数: 2

Abstract

This paper deals with the thermodynamics aspects and economic aspects of the one of the predominant methods of low grade energy recovery, Organic Rankine Cycle. Different working fluids (R245fa, R600a, R601a, neopentane, methanol, ethanol, cyclopentane, propanone and isohexane) are considered for the analysis in three different layouts and they are modelled in Matlab with linked to thermophysical properties database REFPROP. Different aspects of costings such as exergy costing, total annual cost, safety cost and environmental cost are considered in the analysis and multi objective optimization is developed to analyses the different operating conditions. The modelling system is proposed based on three different conceptual experimental test rig containing expander, condenser, pump, evaporator and superheater, containing expander, condenser, pump and evaporator only and containing expander, condenser, pump, evaporator and internal heat exchanger. Based on the performed thermo-economic analysis, it could be concluded that the ethanol is the best working fluid for the ORC for the heat source temperature of 200 °C in the Layout II. Based on investment period of 10 years & 15 years, the unit electricity price can be quantified as LKR. 32.12 & LKR. 31.60 respectively for the best working in the above specified condition.

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发电用有机朗肯循环热经济性分析

本文讨论了低品位能量回收的主要方法之一——有机朗肯循环的热力学和经济性。不同的工质(R245fa、R600a、R601a、新戊烷、甲醇、乙醇、环戊烷、丙烷和异己烷)在三种不同的布局中被考虑用于分析，并在Matlab中建模，并链接到热物性数据库REFPROP。在分析中考虑了不同方面的成本，如能源成本、年总成本、安全成本和环境成本，并发展了多目标优化来分析不同的运行条件。基于包含膨胀器、冷凝器、泵、蒸发器和过热器、仅包含膨胀器、冷凝器、泵和蒸发器以及包含膨胀器、冷凝器、泵、蒸发器和内部换热器三种不同概念的实验试验台，提出了建模系统。热经济分析表明，当热源温度为200℃时，乙醇是ORC的最佳工质。基于10年和15年的投资周期，单位电价可以量化为LKR。32.12 & lkr;分别为在上述规定条件下的最佳工作状态。

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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2018 IEEE 7th International Conference on Power and Energy (PECon)

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