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A solar micro gas turbine system combined with steam injection and ORC bottoming cycle

机译：太阳能微型燃气轮机系统结合蒸汽喷射和兽人底循环

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摘要

Micro gas turbine (MGT) is an important section in solar-driven power systems, as it can improve system efficiency and provide unique flexibility to meet quickly changing demands. Herein, a solar micro gas turbine (MGT) combined with steam injection and organic Rankine cycle (ORC) is proposed to improve efficiency and flexibility. A steam receiver that produces the steam injected into the MGT is placed around the air receiver aperture to increase the receiver intercept efficiency. A thermodynamic model including a heliostat field, a solar receiver, an MGT and an ORC is developed to investigate the performance of the proposed system, where each sub-model is validated with experimental/referenced data for the subsequence optimization of design and operating parameters. For a 100 kW MGT driven by a solar heliostat field, the simulation results show that the optimized aperture diameter of the air receiver is 1.1 m. On four typical days of a year, i.e. the spring equinox, the summer solstice, the autumn equinox, and the winter solstice, the average optical efficiency of the heliostat field is 0.672, 0.754, 0.672 and 0.597, respectively. Fuel consumption of the MGT during the four days is reduced by 14.8%, 24.6%, 22.4% and 3.7%, respectively. The solar energy share can reach up to 86.0% with a system power efficiency of 19.9% at 12:30 of the autumn equinox. By adding steam injection and ORC, the power output can be increased by 8.29 kW and 30.37 kW, respectively, bringing an increase of the total power output by 37.7% and improving the system efficiency and flexibility. The proposed system can benefit the distributed energy systems especially for remote areas or islands as a flexible option.
机译：微型燃气轮机（MGT）是太阳能驱动电力系统的重要部分，因为它可以提高系统效率，并提供独特的灵活性，以满足迅速不断变化的需求。这里，提出了一种与蒸汽喷射和有机朗肯循环（ORC）组合的太阳微型燃气轮机（MGT）以提高效率和柔韧性。产生注入MGT的蒸汽的蒸汽接收器被放置在空气接收器孔径周围以增加接收器拦截效率。开发了一种包括Heliostat领域，太阳能接收器，MGT和ORC的热力学模型，以研究所提出的系统的性能，其中每个子模型用实验/参考数据进行验证，用于随后的设计和操作参数优化。对于由太阳能光晕场驱动的100kW MGT，仿真结果表明，空气接收器的优化孔径直径为1.1米。在一年的四个典型的日子里，即春分，夏至，秋季昼夜平分区，冬至冬至，定位率的平均光学效率分别为0.672,0.754,0.672和0.597。在四天内MGT的燃料消耗分别降低了14.8％，24.6％，22.4％和3.7％。太阳能份额可达86.0％，系统功率效率为19.9％，秋季股份12:30。通过加入蒸汽喷射和兽人，可以分别增加8.29千瓦和30.37千瓦的功率输出，使总功率输出增加37.7％，提高了系统效率和灵活性。所提出的系统可以使分布式能量系统受益于偏远地区或岛屿作为灵活选择。

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  • 来源
    《Energy Conversion & Management》 |2021年第9期|114032.1-114032.12|共12页
  • 作者

    Xiao Gang; Chen Jinli; Ni Mingjiang; Cen Kefa;

  • 作者单位

    Zhejiang Univ State Key Lab Clean Energy Utilizat 38 Zheda Rd Hangzhou 310027 Peoples R China|Zhejiang Univ Qingshanhu Energy Res Ctr 1699 Dayuan Rd Hangzhou 311035 Peoples R China;

    Zhejiang Univ State Key Lab Clean Energy Utilizat 38 Zheda Rd Hangzhou 310027 Peoples R China|Zhejiang Univ Qingshanhu Energy Res Ctr 1699 Dayuan Rd Hangzhou 311035 Peoples R China;

    Zhejiang Univ State Key Lab Clean Energy Utilizat 38 Zheda Rd Hangzhou 310027 Peoples R China|Zhejiang Univ Qingshanhu Energy Res Ctr 1699 Dayuan Rd Hangzhou 311035 Peoples R China;

    Zhejiang Univ State Key Lab Clean Energy Utilizat 38 Zheda Rd Hangzhou 310027 Peoples R China|Zhejiang Univ Qingshanhu Energy Res Ctr 1699 Dayuan Rd Hangzhou 311035 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Distributed power system; Solar micro gas turbine; Thermodynamic model; Steam injection; Organic Rankine cycle;

    机译：分布式电力系统;太阳能微型燃气轮机;热力学模型;蒸汽注射;有机朗肯循环;

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