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首页> 外文会议>ASME Turbine Technical Conference and Exposition >EXPERIMENTAL INVESTIGATION OF A FLOX-BASED COMBUSTOR FOR A SMALL-SCALE GAS TURBINE BASED CHP SYSTEM UNDER ATMOSPHERIC CONDITIONS
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EXPERIMENTAL INVESTIGATION OF A FLOX-BASED COMBUSTOR FOR A SMALL-SCALE GAS TURBINE BASED CHP SYSTEM UNDER ATMOSPHERIC CONDITIONS

机译：大气条件下小型燃气涡轮机基煤型煤型燃烧室的实验研究

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This paper presents a comprehensive experimental investigation of a newly designed single-stage combustion system based on the flameless oxidation (FLOX) technology for a small scale micro gas turbine (MGT). It is used for a combined heat and power plant (CHP) with an electrical power output of 3 kW, using natural gas as fuel. Flameless oxidation is characterized by a flame distributed over a large volume and a high internal recirculation of flue gas. Considering the high combustor inlet temperatures up to 1000K as required for this application, the FLOX-combustion concept offers various advantages compared to swirl-stabilized combustion systems in terms of flashback risk and exhaust gas emissions. This paper describes the detailed characterization of the jet-stabilized combustor. Two versions of the combustor were tested, one generic and one modified version suitable for the integration into the micro gas turbine at an atmospheric test rig with optical access. The stable operating range, including lean blow out (LBO) limits, was determined for varying equivalence ratios, thermal powers and preheat temperatures. The influence of these parameters on the combustion characteristics is discussed. Furthermore, the shape and location of the heat release zone is investigated with OH~*-chemiluminescence (OH~* CL). The exhaust gas emissions NO_x, CO and unburned hydrocarbon (UHC) were also measured. The results demonstrate that the developed combustor design ensures stable and reliable performance. It also offers a high operational flexibility and low pressure loss with NO_x, CO and UHC emissions far below regulation limits for all relevant engine conditions.
机译：本文介绍了基于虚氧化（FLOX）技术的新设计的单级燃烧系统进行了全面的实验研究，用于小型微燃气轮机（MGT）。它用于组合的热量和电厂（CHP），电力输出为3 kW，使用天然气作为燃料。毛躁氧化的特征在于分布在大容量上的火焰和烟道气的高内部再循环。考虑到本申请所需的高燃烧器入口温度高达1000K，与旋转风险和废气排放方面的旋流稳定的燃烧系统相比，熔融燃烧概念提供了各种优点。本文介绍了喷射稳定燃烧器的详细表征。测试了两个版本的燃烧器，一个通用和一个改进版本，适用于在大气检测器的微型燃气涡轮机中，具有光学接入。为不同的等效比，热力和预热温度确定稳定的操作范围，包括瘦爆炸（LBO）限制。讨论了这些参数对燃烧特性的影响。此外，研究了热释放区的形状和位置，用OH〜* - 辛升升（OH〜* CL）进行。还测量了废气排放NO_X，CO和未燃烧的烃（UHC）。结果表明，发达的燃烧器设计确保了稳定可靠的性能。它还提供高的操作灵活性和低压损失，NO_X，CO和UHC排放远低于所有相关发动机条件的调节限值。

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