中低温工业余热有机动力循环工质热稳定性及波动性热源系统调节机理研究

项目名称： 中低温工业余热有机动力循环工质热稳定性及波动性热源系统调节机理研究

项目编号： No.51306198

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 能源与动力工程

项目作者： 潘利生

作者单位： 中国科学院力学研究所

项目金额： 25万元

中文摘要： 我国是世界第二大能源消耗国，工业余热资源丰富，对于温度低于350℃的中低温工业余热，常规动力循环性能很差，而有机动力循环具有较好性能。热稳定性是决定有机工质运行安全性的重要参数，但大量潜力工质热稳定性数据匮乏，不同因素对工质热稳定性的影响机理尚不明确；工业余热热源的波动性对系统性能产生不利影响，亟需开展有机动力循环热源波动性的影响机理及相应调节机理研究。本项目拟采用实验方法对循环潜力工质开展热稳定性研究，明确工质压力、混合工质组元、混入润滑油和容器材质对工质热稳定性的影响机理，获得几种潜力工质在不同状态下的热稳定极限温度，为有机工质优选提供热稳定性依据；建立有机动力循环系统波动性热源动态干扰分析模型，研究波动性热源对系统运行及部件性能的影响机理，研究系统蓄热调节法和汽轮机调节法对波动性热源系统的调节机理及调节效果，针对不同热源，优化两种调节方法的耦合匹配关系。

中文关键词： 有机工质；热稳定性；波动性热源；变工况运行；辐流式汽轮机

英文摘要： China is the world's second largest energy consumer and industrial waste heat resource is rich. Conventional power cycle can't be applied basically while organic power cycle has good performance, for mid-and-low temperature industrial waste heat with temperature lower than 350 C. Thermal stability is an important property which determines operation safety of organic fluids. However, thermal stability data of many potential fluids is lacking in references. Impact mechanism of several factors on thermal stability is not clear. Fluctuation of industrial waste heat is harmful for system performance, so it is urgent to study on impact mechanism of heat source fluctuation on organic power cycle and regulation mechanism for fluctuation system. This project intends to: study on thermal stability of potential working fluids using experimental method, find out impact mechanism of fluid pressure, component of mixed fluid, mixed with lubricant and container materials on thermal stability, obtain thermal stability of several potential fluids and provide thermal stability references for fluids optimization; establish dynamic interference analysis model for organic power cycle system with fluctuant heat source, study on impact mechanism of fluctuant heat source on system operation and system component performance, investigate

英文关键词： organic working fluid；thermal stability；fluctuant heat source；variable parameter operation；radial-flow turbine