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Hybrid solar flameless combustion system: Modeling and thermodynamic analysis

机译：混合太阳能无焰燃烧系统：建模和热力学分析

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摘要

In this paper, the idea of using flameless combustion in a hybrid solar combustion system is investigated by modeling and thermodynamically analyzing a gas turbine system. In this regard, a gas turbine system coupling with hybrid solar flameless combustion including heliostat solar field, central receiver, flameless combustor and power generation system are modeled. In conditions that sun power is not adequate to heat up the combustion air over auto-ignition temperature of the fuel, air is passed through the first stage combustor. To provide a basic cycle for comparison, a common gas turbine with preheater is modeled as well. Energy and exergitic-based analyses of various systems are evaluated and environmental footprints reduction of proposed optimum cycle is assessed and compared to the basic case. The results illustrate that Nitrogen Oxides formation in hybrid solar flameless combustion is significantly lower than common gas turbine system. While the gas turbine with preheater generates 67 mu g Nitrogen Oxides per kWh, hybrid solar combustion system produces less than 7 mu g Nitrogen Oxides per kWh. In comparison to gas turbine system, fuel consumption decreases in hybrid solar flameless combustion system from 0.1875 kg/s to 0.16 kg/s (about 14.7%) when solar share is considered just 40%. Since the inlet air of flameless combustor is charged from solar heater outlet, increasing air temperature enhances the share of solar energy in the system which results in overall energy reduction in the system. The proposed system shows significant environmental benefits and based on the available technologies, it is suitable for high temperature solar towers.
机译：本文通过对燃气轮机系统进行建模和热力学分析，研究了在混合太阳能燃烧系统中使用无焰燃烧的想法。在这方面，对燃气涡轮机系统与混合太阳能无焰燃烧相结合，包括定日镜太阳场，中央接收器，无焰燃烧室和发电系统。在太阳动力不足以在燃料的自燃温度以上加热燃烧空气的条件下，空气通过第一级燃烧器。为了提供比较的基本循环，还对带有预热器的普通燃气轮机进行了建模。评估了各种系统的基于能量和能量的分析，并评估了建议的最佳循环的环境足迹减少情况，并将其与基本情况进行了比较。结果表明，混合太阳能无焰燃烧中的氮氧化物形成明显低于普通燃气轮机系统。带有预热器的燃气轮机每千瓦时产生67克氮氧化物，而混合太阳能燃烧系统每千瓦时产生不到7克氮氧化物。与燃气轮机系统相比，混合动力太阳能无焰燃烧系统的燃油消耗从0.1875 kg / s降低到0.16 kg / s（约14.7％），而太阳能份额仅为40％。由于无焰燃烧室的进气是从太阳能加热器的出口充入的，因此升高的空气温度会提高系统中太阳能的份额，从而导致系统中的总能耗降低。拟议的系统显示出显着的环境效益，并基于现有技术，适用于高温太阳能塔。

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  • 来源
    《Energy Conversion & Management》 |2018年第6期|146-155|共10页
  • 作者

    Hosseini Seyed Ehsan; Barzegaravval Hasan; Chehroudi Bruce; Wahid Mazlan Abdul;

  • 作者单位

    Arkansas Tech Univ, Dept Mech Engn, Combust & Sustainable Energy Lab ComSEL, 1811 N Boulder Ave, Russellville, AR 72801 USA;

    Univ Teknol Malaysia, Fac Mech Engn, High Speed Reacting Flow Lab, Utm Skudai 81310, Johor, Malaysia;

    Arkansas Tech Univ, Dept Mech Engn, Combust & Sustainable Energy Lab ComSEL, 1811 N Boulder Ave, Russellville, AR 72801 USA;

    Univ Teknol Malaysia, Fac Mech Engn, High Speed Reacting Flow Lab, Utm Skudai 81310, Johor, Malaysia;

  • 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

    Flameless combustion; Solar energy; Pollutant; Gas turbine;

    机译：无焰燃烧;太阳能;污染物;燃气轮机;

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