摘要
为实现发动机冷却系统能量回收的回收利用,提出了基于数值计算对冷却系统能量回收温差发电器进行设计的方法,并利用发动机台架实验对该方法的可行性进行了验证。研究发现数值计算得到的散热系统温度和台架试验结果的偏差在3.5%以内,能量回收管阻力偏差为1.5%,这表明利用数值计算的方法对能量回收管和散热系统进行分析设计是可行的。进一步的实验表明,采用市售温差发电片对发动机冷却系统能量回收有一定的可行性,但是采用目前的结构形式使得温差发电器两端温差较小,导致其能量回收的经济性较差。
In order to achieve energy recovery and utilization of an engine＇s cooling system and improve its internal combustion engine efficiency, we develop an optimization design method for the energy recovery of the thermoelectric generator of the internal combustion engine＇s cooling system by using the numerical method, thefinite volume method and a three-dimensional model. Its validation is done by experiments. The results on thecooling system temperature distribution show that the difference between the simulation and experimental results isless than 3.5%, while the residential pressure difference of energy recovery pipe is 1.5%. This indicates that thesimulation method for cooling system and the energy recovery pipe analysis based on numerical simulation arefeasible. More experimental results indicate that it is feasible to recover and recycle the energy from the internalcombustion engine＇s cooling system based on commercial thermoelectric chips but the thermoelectric generator is noteconomical because the current generator has only a small temperature difference between its hot and cold ends.
出处
《机械科学与技术》
CSCD
北大核心
2017年第5期787-792,共6页
Mechanical Science and Technology for Aerospace Engineering
基金
河南省高等学校青年骨干教师资助计划(2014GGJS-120)
河南省产学研合作试点项目(201513)
河南工程学院动力机械与车辆工程研究所及河南工程学院可靠性工程技术中心项目资助
关键词
温差发电
发动机
能量回收利用
实验
数值计算
优化
thermoelectric generator
internal combustion engine
expenments
numerical methods
efficiency
design
method
optimizationenergy utilization
finite volume method
temperature distribution
three-dimensional
