摘要
以压缩空气为工质,搭建ORC余热回收系统的自由活塞膨胀机-直线发电机(FPE-LG)试验台架,并基于FPE-LG试验台架,研究外接负载电阻对FPE-LG的运动特性、输出性能和能量转换效率的影响。研究结果表明:自由活塞组件的位移和速度随着外接负载电阻的增加而增加;FPE-LG的峰值输出电压随着外接负载电阻和进气压力的增加而增加,最大峰值输出电压可达44.4 V;随着外接负载电阻的增大,FPE-LG的峰值输出功率先增加最终趋于稳定,最大峰值输出功率可以达到110 W;随着进气压力和外接负载电阻的增大,FPE-LG的能量转换效率均出现先增大后减小的趋势,最大能量转换效率可高达73.33%。
In this paper,a test rig of free piston expander-linear generator(FPE-LG)for organic Rankine cycle(ORC)waste heat recovery system using compressed air is established.Based on the FPE-LG test rig,the experiments of external load resistance effect on the motion characteristics,output performance and energy conversion efficiency of the FPE-LG are conducted.The results show that the displacement and velocity of the free piston assembly increase with the external load resistance.As the external load resistance and intake pressure increase,the peak voltage output of the FPE-LG increases.The maximum peak voltage output is 44.4 V.The peak power output initially shows a non-linear increasing trend when growing the external load resistance and stabilizes in the end,the maximum peak power output of 110 W can be achieved.In addition,the energy conversion efficiency of the FPE-LG first increases and then decreases with intake pressure and external load resistance.The maximum energy conversion efficiency can reach up to 73.33%.
作者
赵腾龙
张红光
侯孝臣
许永红
于飞
刘毅
Zhao Tenglong;Zhang Hongguang;Hou Xiaochen;Xu Yonghong;Yu Fei;Liu Yi(College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100124,China;Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing 100124,China;College of Electrical and Mechanical Engineering,Beijing Information Science and Technology University,Beijing 100192,China;Datong North Tianli Turbocharging Technology Co.,Ltd.,Datong 037036,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第7期237-243,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金资助项目(51776005)。
关键词
自由活塞
余热回收
试验
输出性能
能量转换效率
有机朗肯循环
free piston
waste heat recovery
experiments
output performance
energy conversion efficiency
ORC
作者简介
通信作者:张红光(1970—)男,博士,教授,博士生导师,主要从事内燃机余热利用方面的研究。zhanghongguang@bjut.edu.cn。
