Chemical kinetics method for evaluating the thermal stability of Organic Rankine Cycle working fluids

被引：64

作者：

Dai, Xiaoye ^{[1
]}

Shi, Lin ^{[1
]}

An, Qingsong ^{[2
]}

Qian, Weizhong ^{[3
]}

机构：

[1] Tsinghua Univ, Dept Thermal Engn, Minist Educ China, Key Lab Thermal Sci & Power Engn, Beijing 100084, Peoples R China

[2] Tianjin Univ, Sch Mech Engn, MOE, Key Lab Efficient Utilizat Low & Medium Grade Ene, Tianjin 300072, Peoples R China

[3] Tsinghua Univ, Dept Chem Engn, Beijing Key Lab Green Chem React Engn & Technol, Beijing 100084, Peoples R China

来源：

APPLIED THERMAL ENGINEERING | 2016年 / 100卷

基金：

中国国家自然科学基金;

关键词：

Organic Rankine Cycle (ORC); Thermal stability; Apparent chemical kinetics model; n-pentane;

D O I：

10.1016/j.applthermaleng.2016.02.091

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Organic Rankine Cycle (ORC) systems are widely used to generate electricity with industrial waste heat and renewable energy. Transcritical ORCs with high temperature heat sources are more attractive than subcritical ORCs due to their lower exergy losses, higher thermal efficiencies and higher work outputs. The working fluid thermal stability is the primary consideration in the working fluid selection due to decomposition at high temperatures. This paper presents a chemical kinetics method for evaluating the thermal stability of ORC working fluids. A chemical kinetics experimental system was built with n-pentane as the test working fluid. The influences of pressure and temperature were analyzed experimentally and theoretically. An apparent chemical kinetics model was established to predict the thermal stability with the apparent kinetic parameters of n-pentane measured experimentally. This apparent chemical kinetics model gives significant guidance for the working fluid selection and ORC system design. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：708 / 713

页数：6

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