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Comparative analysis of vehicle turbochargers in energy microgeneration for different compoundings
Journal of the Brazilian Society of Mechanical Sciences and Engineering ( IF 1.8 ) Pub Date : 2021-01-02 , DOI: 10.1007/s40430-020-02752-1
Daniel Vieira Pinto , Carlos Roberto Altafini , Daniel Amoretti Gonçalves , Giovani Dambros Telli

In this work, possible gas microturbine configurations derived from vehicular turbochargers are evaluated with respect to the number of shafts and electric efficiency-enhancing devices (intercooler, heat recover and reheater). Turbocompounding application is designed for energy microgeneration combining vehicular turbocharger with power turbine (PT). The analysis was performed using Cycle-Tempo software. Ten different configurations of gas microturbines were studied, assessing the parameters of power and isentropic efficiency. For these evaluations, the turbochargers were defined to compose the turbocompounding, using the performance maps from a manufacturer. The main characteristics of seven turbocharger models were identified, which come with different combinations of turbine and compressor rotors. The best configuration found in the simulations was one turbocharger, one turbocompounding, one intercooler, one heat recovery unit and two stages of reheating, with values of power and electric efficiency of 11.98 kW and 5.21%, respectively. The electric efficiency increased from 3.5 to 3.99% adjusting the air mass flow rate and isentropic efficiency of compressors and turbines in the configuration with a turbocharger and with a turbocompounding. In addition, the latter composition was linked to a basic organic Rankine cycle (ORC) operating with R123 refrigerant in order to recover waste heat. Thus, the net total efficiency increased to 8.71%. Moreover, when the same ORC system operating with water combines heat and power generation (CHP), the overall efficiency of the complete system was 70.7%.



中文翻译:

不同配比的能源微型发电中的车辆涡轮增压器的比较分析

在这项工作中,针对轴和电效率增强装置(中间冷却器,热量回收和再热器)的数量,评估了源自车辆涡轮增压器的可能的微型燃气轮机配置。涡轮复合应用设计用于结合车辆涡轮增压器和动力涡轮(PT)的能量微型发电。使用Cycle-Tempo软件进行分析。研究了十种不同配置的微型燃气轮机,评估了功率和等熵效率的参数。对于这些评估,使用制造商的性能图将涡轮增压器定义为组成涡轮复合发动机。确定了七个涡轮增压器模型的主要特征,它们具有涡轮机和压缩机转子的不同组合。在模拟中发现的最佳配置是一台涡轮增压器,一台涡轮复合器,一台中冷器,一台热回收装置和两阶段的再加热,其功率和电效率分别为11.98 kW和5.21%。在配置了涡轮增压器和涡轮复合机的配置中,调整压缩机和涡轮的空气质量流量和等熵效率,电效率从3.5%提高到3.99%。另外,为了回收废热,后一种成分与使用R123制冷剂运行的基本有机朗肯循环(ORC)有关。因此,净总效率提高到8.71%。此外,当同一个用水运行的ORC系统将热电联产(CHP)结合在一起时,整个系统的整体效率为70.7%。一台中冷器,一台热回收装置和两个再加热阶段,其功率和电效率分别为11.98 kW和5.21%。在配置了涡轮增压器和涡轮复合机的配置中,调整压缩机和涡轮的空气质量流量和等熵效率,电效率从3.5%提高到3.99%。另外,为了回收废热,后一种成分与使用R123制冷剂运行的基本有机朗肯循环(ORC)有关。因此,净总效率提高到8.71%。此外,当同一个用水运行的ORC系统将热电联产(CHP)结合在一起时,整个系统的整体效率为70.7%。一台中冷器,一台热回收装置和两个再加热阶段,其功率和电效率分别为11.98 kW和5.21%。在配置了涡轮增压器和涡轮复合机的配置中,调整压缩机和涡轮的空气质量流量和等熵效率,电效率从3.5%提高到3.99%。另外,为了回收废热,后一种成分与使用R123制冷剂运行的基本有机朗肯循环(ORC)有关。因此,净总效率提高到8.71%。此外,当同一个用水运行的ORC系统将热电联产(CHP)结合在一起时,整个系统的整体效率为70.7%。在配置了涡轮增压器和涡轮复合机的配置中,调整压缩机和涡轮的空气质量流量和等熵效率,电效率从3.5%提高到3.99%。另外,为了回收废热,后一种成分与使用R123制冷剂运行的基本有机朗肯循环(ORC)有关。因此,净总效率提高到8.71%。此外,当同一个用水运行的ORC系统将热电联产(CHP)结合在一起时,整个系统的整体效率为70.7%。在配置了涡轮增压器和涡轮复合机的配置中,调整压缩机和涡轮的空气质量流量和等熵效率,电效率从3.5%提高到3.99%。另外,为了回收废热,后一种成分与使用R123制冷剂运行的基本有机朗肯循环(ORC)有关。因此,净总效率提高到8.71%。此外,当同一个用水运行的ORC系统将热电联产(CHP)结合在一起时,整个系统的整体效率为70.7%。后者的组成与使用R123制冷剂运行的基本有机朗肯循环(ORC)有关,以回收废热。因此,净总效率提高到8.71%。此外,当同一个用水运行的ORC系统将热电联产(CHP)结合在一起时,整个系统的整体效率为70.7%。后者的组成与使用R123制冷剂运行的基本有机朗肯循环(ORC)有关,以回收废热。因此,净总效率提高到8.71%。此外,当同一个用水运行的ORC系统将热电联产(CHP)结合在一起时,整个系统的整体效率为70.7%。

更新日期:2021-01-02
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