用于汽油机余热回收的蒸发器计算与试验研究

何王波; 高文志; 王志强; 武聪山

doi:10.13433/j.cnki.1003-8728.2017.1001

用于汽油机余热回收的蒸发器计算与试验研究

doi: 10.13433/j.cnki.1003-8728.2017.1001

1.
天津大学内燃机燃烧学国家重点实验室, 天津 300072

基金项目:

国家重点基础研究发展计划973项目（2011CB707206）资助

详细信息

作者简介:
何王波(1991-),硕士研究生,研究方向为内燃机余热回收技术及内燃机NVH,1217203225@qq.com

通讯作者:
高文志(联系人),教授,博士,gaowenzhi@tju.edu.cn

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- 文章访问数: 307
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- 被引次数: 0
出版历程
- 收稿日期: 2016-06-02
- 刊出日期: 2017-10-05

The Simulation and Experiment Study on Evaporator for Waste Heat Recovery of Gasoline Engine

1.
State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China

摘要

摘要: 针对基于朗肯循环的汽油机尾气余热回收系统的特点，采用一种多层螺旋管式换热器作为蒸发器。根据蒸发器的结构和工作特点，在MATLAB中建立了计算模型，得到蒸发器各阶段的换热情况。模拟结果表明，工质流量的增加会导致工质与尾气在蒸发器出口处的温度降低，同时提高了废气利用率。工质的流量与过热度的增加会受换热面积的限制。为了进一步验证蒸发器的性能，建立并运行了朗肯循环余热回收试验。试验结果显示，该款蒸发器的效率最大为89.33%，实际的废气利用率最大为41.93%。
- 余热回收 /
- 朗肯循环 /
- 多层螺旋管 /
- 蒸发器
Abstract: On the research of exhaust waste heat recovery by using Rankine cycle,a type of evaporator with multi-layer spiral tubes is proposed. A mathematical model is generated to evaluate the performance of the evaporator according to its structure parameters and working characteristics. Based on this model, start-stop parameters of each heat transfer section is analyzed. The simulation results show that the increases of the mass flow rate of the working fluid can lead to a reduced outlet temperature of working fluid and exhaust while the exhaust energy utilization rate is increased. The heat transfer area can limit the increase of the mass flow rate of the working fluid and superheat. To evaluate the performance of evaporator, the Rankine cycle waste heat recovery system is established and tested. The test results indicate that the maximum efficiency of evaporator is 89.33% and the maximum actual exhaust energy utilization rate is 41.93%.
- waste heat recovery /
- rankine cycle /
- multi-layer spiral tubes /
- evaporator

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参考文献(15)

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