高压流体做功式有机朗肯循环余热利用系统的性能分析  

Performance Analysis of High Pressure Fluid Power Type Organic Rankine Cycle Waste Heat Utilization System

作　　者：谭金富 黄惠兰[1] 李刚[2] 

机构地区：[1]广西大学机械工程学院,广西南宁530004 [2]广西大学电气工程学院,广西南宁530004

出　　处：《装备制造技术》2015年第10期17-21,共5页Equipment Manufacturing Technology

摘　　要：针对能源的余热利用提出将气液两相喷射器和液轮机应用于有机朗肯循环中形成两种不同于传统有机朗肯循环形式的余热利用系统。对这两种系统进行了(火用)效率与热效率的理论计算和分析,考察喷射器和液轮机对提高系统效率的作用。结果表明,这两种新形式的有机朗肯循环余热利用系统的余热利用效果优于传统有机朗肯循环。在相同的蒸发器出口条件下,将气液两相喷射器取代传统有机朗肯循环的工质泵所组成的有机朗肯循环余热利用系统在三种系统中具有最高的(火用)效率和热效率,分别为57.19%、16.53%;气液两相喷射器和液轮机结合的有机朗肯循环余热利用系统应用范围更广。为余热利用提出了一种新的发展思路。Two new forms of organic Rankine cycle different from the traditional organic Rankine cycle waste heat utilization system are brought up by applying gas-liquid injector and hydraulic turbine to organic Rankine cycle. Exergy efficiency and thermal efficiency of these two systems are calculated and analyzed. The influence of injector and the hydraulic turbine on efficiency of these two systems is analyzed. Results show that these two kinds of new forms of organic Rankine cycle waste heat utilization systems are superior to the traditional one. When the state of working substances at evaporator outlet keeps the same, the third system in which gas- liquid ejector acts like the pump in the traditional organic Rankine cycle waste heat utilization system owns the highest exergy efficiency and heat efficiency, 57.19% and16.53% respectively. The system which contains gas-liquid injector and hydraulic turbine has a wider application rang. A new thought is put forward for waste heat utilization.

关 键 词：有机朗肯循环 喷射器 液轮机 (火用)效率 热效率 

分 类 号：TK12[动力工程及工程热物理—工程热物理]