Parametric optimization of organic Rankine cycle for vehicle diesel engine based on particle swarm optimization

被引：0

作者：

Zhang, Hongguang ^{[1
,2
]}

Wang, Hongjin ^{[1
,2
]}

Yang, Kai ^{[1
,2
]}

Yang, Fubin ^{[1
,2
]}

Song, Songsong ^{[1
,2
]}

Chang, Ying ^{[1
,2
]}

Bei, Chen ^{[1
,2
]}

Meng, Fanxiao ^{[1
,2
]}

机构：

[1] College of Environmental and Energy Engineering, Beijing University of Technology, Beijing

[2] Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing

来源：

Huagong Xuebao/CIESC Journal | 2015年 / 66卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Heat transfer; Optimization; Organic Rankine cycle; Thermodynamic process; Vehicle diesel engine; Waste heat recovery;

D O I：

10.11949/j.issn.0438-1157.20150734

中图分类号：

学科分类号：

摘要：

To efficiently recover the waste heat from the diesel engine exhaust, an organic Rankine cycle (ORC) system was employed. The variation tendency of the diesel engine exhaust energy under various operating conditions was analyzed through experiments. Based on the particle swarm optimization, the operating parameters including evaporation pressure, superheat degree, and expansion ratio of ORC systems were optimized with net power output and exergy efficiency selected as objective functions. The optimization results show that, for a certain operating condition of the diesel engine, the optimal values for evaporating pressure, superheat degree, and expansion ratio can be determined. According to the optimization, the ORC system and vehicle diesel engine-ORC combined system are studied. The results show that, at the diesel engine speed of 2200 r·min-1 and engine torque of 1215 N·m, the net power output of the ORC system is 30.61 kW and the power output increasing rate of the combined system is 9.86%. At the diesel engine speed of 1200 r·min-1 and engine torque of 1131 N·m, the brake specific fuel consumption of combined system is 175.0 g·(kW·h)-1. © All Right Reserved.

引用

页码：5031 / 5039

页数：8

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