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    • 王建明，黄莺，童乐.车辆废热回收有机朗肯循环系统热力性能分析[J].内燃机工程,2019,40(3):80-86.
    Thermal Performance of Vehicle Energy-Supplying System Based on Waste Heat Recovery Using Organic Rankine Cycle
    DOI：10.13949/j.cnki.nrjgc.2019.03.011
    Key Words:organic Rankine cycle  waste heat recovery  air conditioning  energy-saving potential
    Author NameAffiliation
    WANG Jianming, HUANG Ying, TONG Le 1.Taixing Aeronautical Optoelectronic Technology Company, Taixing 225400, China
    2.College of Energy  and Power Engineering， Nanjing University of Aeronautics and Astronautics， Nanjing 210016, China 
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    Abstract:Based on the waste heat recovery using the organic Rankine cycle(ORC), an advanced vehicle energy supply system was proposed to satisfy the different energy demands of vehicles in every season. The proposed system can not only supply enough warm or cool air, but it can also be used to improve the overall vehicle thermal efficiency and fuel saving in different seasons by recovering waste heat from gasoline engine coolant and exhaust gas through the ORC subsystem. In winter the system can supply enough heat to vehicle cabin, while achieving additional net power output. In spring and autumn the system can transfer heat in exhaust gas and coolant into power, saving energy with most significant amount compared with the other seasons. In summer the system supplies the air conditioning subsystem with power, while reducing fuel consumption, and lowering overall energy consumption. Based on the performance data of a Tianjin FAW TOYOTA 8A-FE gasoline vehicle, the energy conservation characteristics of the proposed system was simulated. The results show that reducing the logarithmic mean temperature difference of the first evaporator and environment temperature and enhancing the vehicle speed can increase the turbine power output and fuel saving. The maximum values of the turbine power output and fuel saving rate are obtained in winter, and they are 11.0kW and 17.2% respectively. The proposed system can remarkably reduce fuel consumption, having potential in energy saving, since it can effectively recover waste heat from engine coolant and exhaust gas, and the operation of the ORC heat transfer power subsystem is not subject to the seasons.
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