技术中心

摘 要： 汽车是现代生活中不可缺少的重要组成部分。汽车燃油热量仅三分之一为有效能量(作为动力),其余三分之二则是通过冷却水或排气方式排入大气,不仅极大的浪费了能源而且污染了环境。本文以发动机的废热利用作为有机朗肯循环的热源分析，通过对ORC系统进行数学建模，改变系统运行工况，来评价不同工质的系统循环性能。在热力学分析的基础上，与其他文献中试验数据进行了比较，结果表明这个模型是可靠的，为有机朗肯循环的系统设计指明了方向。 关键字 ：有机朗肯循环 废热回收 发动机余热 R245fa Thermodynamic analyse of low temperature organic rankine cycle Liu Jie Chen Jiangping Qi Zhaogang Institue of Refrigeration and Cryogenics, Shanghai Jiao Tong Universicty, Shanghai 200240,China Abstracts : Automobile is indispensable to modern life. However only one-third of vehicle fuel heat energy is used to drive the motor, while the remaining two-thirds is directly exhaust through the air and coolingwater, which is not only a huge of waste but also pollutes the environment. So the waste heat of motor was studied as a heat resource of Organic Rankine Cycle (ORC). first a mathematical modeling was constructed based on ORC system, then schanged the operating condition to evaluate different work fluids. After compeared with the other researchers data, the model was correct. Thus the study is the preliminary desigh of ORC system. Key words : ORC； thermodynamic analyse; wate heat; R245fa