Screening of hydrocarbons as supercritical ORCs working fluids by thermal stability

被引：87
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, Peoples R China
[2] Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin, Peoples R China
[3] Tsinghua Univ, Dept Chem Engn, Beijing Key Lab Green Chem React Engn & Technol, Beijing, Peoples R China
来源：
ENERGY CONVERSION AND MANAGEMENT | 2016年 / 126卷
基金：
中国国家自然科学基金;
关键词：
Organic Rankine Cycle (ORC); Hydrocarbon; Thermal stability; Thermal decomposition indicator; ORGANIC RANKINE CYCLES; POWER-PLANT; FEASIBILITY; GENERATION; SYSTEM;
D O I：
10.1016/j.enconman.2016.08.024
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 for industrial waste heat recovery and renewable energy utilization. The supercritical ORC is currently one of the main development directions due to its low exergy loss, high thermal efficiency and high work output. The thermal stability is the major limitation of organic working fluid selection with high temperature heat sources. This paper presents a rapid experimental method for assessing the thermal stability of hydrocarbons for ORCs. The fluids were tested in a high temperature reactor with methane and hydrogen theoretically and experimentally confirmed to be the indicators of thermal decomposition. The thermal decomposition temperatures were obtained for n-hexane, n-pentane, isopentane, cyclopentane, n-butane and isobutane using the rapid experimental method. The results show that cycloalkanes are not the good choices by thermal stability and long carbon chain hydrocarbons (longer than C6) are not suitable for supercritical ORCs due to the thermal stability limitation. (C) 2016 Elsevier Ltd. All rights reserved.
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收藏
页码：632 / 637
页数：6
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