内燃机工程2017，Vol.38Issue(2)：1-7,7.DOI:10.13949/j.cnki.nrjgc.2017.02.001
电控冷却柴油机热电余热回收系统总能效率优化研究
Overall Efficiency Optimization of Diesel Engines with Electronic Cooling System and Waste Heat Recovery Thermoelectric Generator
摘要
Abstract
In order to study the exhaust heat recovery potential and influencing rule of a thermoelectric generator (TEG) used in a vehicle, a system model of engine with electronic cooling system and TEG was built with the GT-Suite software, and an overall efficiency criterion for the system considering the whole energy flow was proposed.The effect of the TEG on the overall system efficiency was studied under different engine operation conditions and at different cooling temperatures.The results show that based on an integrated electronic cooling system, the overall system efficiency at low engine speed can be improved by the TEG and it increases as engine load increases.But at medium and high engine speeds the influence of cooling power consumption becomes more prominent.At heavy load, the overall system efficiency will deteriorate because of too much cooling power consumption.Only at low and medium loads can the overall system efficiency be improved by the TEG.There is a best cooling temperature that can make the overall system efficiency maximum.关键词
柴油机/热电发电装置/电控冷却系统/总能效率Key words
diesel engine/thermoelectric generator/electronic cooling system/overall efficiency分类
能源科技引用本文复制引用
谢辉,聂尔冰..电控冷却柴油机热电余热回收系统总能效率优化研究[J].内燃机工程,2017,38(2):1-7,7.基金项目
国家"九七三"重点基础研究发展计划项目(2011CB707206) （2011CB707206）
