删除或更新信息，请邮件至freekaoyan#163.com(#换成@)

以R123和R245fa为循环工质的车用余热回收系统的分析

本站小编 Free考研考试/2021-12-21
本文二维码信息
二维码（扫一下试试看！）
以R123和R245fa为循环工质的车用余热回收系统的分析
Exergy Analysis of a Vehicle Waste Heat Recovery System with R123 and R245fa as Working Fluids
投稿时间：2016-05-26
DOI：10.15918/j.tbit1001-0645.2017.09.005
中文关键词:有机朗肯循环余热回收（火用）分析R123R245fa
English Keywords:organic rankine cyclewaste heat recoveryexergy analysisR123R245fa
基金项目:国家自然科学基金资助项目（51076013）
作者单位E-mail
史磊北京理工大学 机械与车辆学院, 北京 100081
北京机械设备研究所, 北京 100854
魏名山北京理工大学 机械与车辆学院, 北京 100081mswei@bit.edu.cn
马朝臣北京理工大学 机械与车辆学院, 北京 100081
摘要点击次数:554
全文下载次数:968
中文摘要:
针对以R123和R245fa为循环工质的车用有机朗肯循环余热回收系统，结合重型车用柴油机的试验数据针对系统进行焖（火用）分析.分析结果表明对于R123系统，在不同的发动机转速下，系统焖（火用）效率随着蒸发压力和发动机负荷增大逐渐增大，但是增长速率均逐渐减小.对于R245fa系统，在不同的发动机转速下，系统焖（火用）效率随着蒸发压力的增大先增大后减小，随发动机负荷的增大逐渐增大.蒸发器是提升中温有机朗肯循环系统系统焖（火用）效率的关键，合理选择及设计系统蒸发器将能够有效提高系统焖（火用）效率.
English Summary:
Using experimental data of the heavy-duty diesel engine, the system exergy analysis was carried out for a vehicle waste heat recovery system which was an organic rankine cycle (ORC) with R123 and R245fa as working fluids. Results show that under different engine speeds, the R123 system exergy efficiency increases with the increase of evaporation pressure and engine load, but the increase rate decreases gradually. Under different engine speeds, the R245fa system exergy efficiency increases first and then decreases with the increase of evaporation pressure, and increases with the increase of engine load. An evaporator is the key point to improving the system exergy efficiency. An appropriate evaporator for the system can improve the system exergy efficiency effectively.
查看全文查看/发表评论下载PDF阅读器
相关话题/系统 北京 车辆 北京理工大学 机械

Free考研考试FreeKaoYan.Com
欢迎来到Free考研考试，"为实现人生的Free而奋斗"

© 2020 FreeKaoYan! . All rights reserved.