Thermal stability of working fluids for organic Rankine cycles: An improved survey method and experimental results for cyclopentane, isopentane and n-butane
Thermal stability of working fluids for organic Rankine cycles: An improved survey method and experimental results for cyclopentane, isopentane and n-butane
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DOI：
10.1016/j.applthermaleng.2014.08.017
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发表时间：
2014-12
影响因子：
6.4
通讯作者：
M. Pasetti;C. Invernizzi;P. Iora
中科院分区：
文献类型：
--
作者：
M. Pasetti;C. Invernizzi;P. Iora
在这项工作中，我们提出了一种改进的测量方法来评估有机朗肯循环工作流体的热稳定性。本文提出的方法是对文献中已经使用的一种测试方法的改进，该方法是基于对受到不断增加的热应力温度的流体的温度和压力测量的分析。与已知的方法相比，本工作中提出的调查技术提供了测量蒸汽压偏差的不同评估和分解率的不同估计方法。在描述了实验装置和测试方法之后，我们提出并讨论了有机朗肯循环应用的三种感兴趣的流体，即环戊烷、异戊烷和正丁烷，在220°C至350°C的温度范围内的热稳定性的一些实验结果。
In this work we present an improved survey method for the evaluation of the thermal stability of working fluids for organic Rankine cycles. The method presented here represents an improvement of a test methodology already used in literature, based on the analysis of temperature and pressure measurements of a fluid subjected to increasing thermal stress temperatures. Compared to the already known methodology, the survey technique presented in this work offers a different evaluation of the measured vapor pressure deviations and a different estimation method of the decomposition rates. After the description of the experimental apparatus and of the test methodology, we present and discuss some experimental results of the thermal stability of three fluids of interest for organic Rankine cycle applications, namely Cyclopentane, Isopentane and n-Butane, in the temperature range between 220 °C and 350 °C.