Material Compatibility of Hexamethyldisiloxane as Organic Rankine Cycle Working Fluids at High Temperatures
Material Compatibility of Hexamethyldisiloxane as Organic Rankine Cycle Working Fluids at High Temperatures
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DOI：
10.1007/s11630-019-1147-z
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发表时间：
2020-02
影响因子：
2.5
通讯作者：
Xiaoye Dai;Lin Shi;W. Qian
中科院分区：
文献类型：
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作者：
Xiaoye Dai;Lin Shi;W. Qian
有机朗肯循环(ORC)是一种很有前途的工业余热回收和可再生能源利用技术。高温兽人因其高热效率和高输出而引起了人们的特别兴趣。工质的材料相容性是高温ORCS工质选择和系统设计的重要制约因素。本工作提出了一种基于ORCS的计算条件以及组分、温度和材料的匹配来研究ORC工质材料相容性的方法。实验流体为六甲基二硅氧烷(MM)。实验结果表明，304不锈钢与MM的配伍性好于铜作为蒸发器的材料。对于以MM为工质的高温兽类，由于其相容性较差，氟橡胶不适合作为密封材料。作为流体泵的润滑剂，矿物油与MM的相容性好于多元醇酯(POE)润滑剂。
The organic Rankine cycle (ORC) is a promising technology for industrial waste heat recovery and renewable energy utilization. High temperature ORCs have attracted particular interest because of their high thermal efficiencies and outputs. The material compatibility of working fluid is a significant limitation for the working fluid selection and system design for high temperature ORCs. This work presents a method for studying the material compatibility of ORC working fluids based on the calculated conditions of the ORCs and matching of components, temperatures, and materials. Hexamethyldisiloxane (MM) was chosen as the test fluid. The experimental results show that 304 stainless steel has better compatibility with MM than copper as the material of evaporators. Fluoric rubber is not a suitable sealing material for high temperature ORCs with MM as the working fluids because of the bad compatibility. Mineral oil has better compatibility with MM than polyol ester (POE) lubricant as the lubricant for the fluid pump.