NUMERICAL STUDY OF A SMALL-SCALE MICRO GAS TURBINE-ORC POWER PLANT INTEGRATED WITH A BIOMASS GASIFIER

机译：一种与生物质气化器集成的小型微型燃气轮机 - 兽人电厂的数值研究

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The paper is focused on coupling a small-scale power plant, based on a micro gas turbine (mGT) and a bottoming Organic Rankine Cycle (ORC), with a biomass gasifier. The aim of this study is to define the optimal strategies to maximize the benefits related to distributed generation and to promote the organic solid waste gasification, in terms of energy efficiency and renewable sources exploitation. In particular, they were investigated the energetic performances of the system when the micro gas turbine was fed with several fuel blends, made by specific volume concentration of syngas and biogas. The low heating value of both considered fuels implies the necessity of operating the mGT in peculiar conditions as determined by the performance maps of compressor and turbine. Then, the thermodynamic analyses of the whole energy system have been carried out to evaluate the performance for each fuel. The high hydrogen content of syngas and the different thermodynamic properties of the studied fuel blends required a deeper investigation of the combustion process. In order to analyze the combustion stability and the fluid dynamic aspects, an accurate investigation of combustion chamber has been performed through a CFD solver. Finally, a comparison of the plant performances for each fuel blend have been reported, along with opportunities and critical aspects related to power plant integration.

机译：本文专注于基于微型燃气涡轮机（MGT）和底部有机朗肯循环（ORC）的小型电厂耦合，具有生物质气化器。本研究的目的是定义最佳策略，以最大限度地提高与分布生成相关的益处，并在能效和可再生源剥削方面促进有机固体废物气化。特别地，当微型燃气涡轮机用几种燃料混合物供给时，通过组合成气和沼气的特异性浓度制成，研究了它们的能量性能。两者认为燃料的低加热值意味着必须在由压缩机和涡轮机的性能图确定的特殊条件下操作MGT的必要性。然后，已经进行了整个能量系统的热力学分析，以评估每个燃料的性能。合成气的高氢含量和所研究的燃料混合物的不同热力学性质需要更深入地研究燃烧过程。为了分析燃烧稳定性和流体动力学方面，通过CFD求解器进行了对燃烧室的精确研究。最后，已经报道了对每个燃料混合物的植物性能的比较，以及与电厂集成有关的机会和关键方面。

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《ASME Turbo Expo: Turbomachinery Technical Conference and Exposition》|2020年|V008T20A020.1-V008T20A020.10|共10页
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Fabrizio Reale; Raniero Sannino; Raffaela Calabria; Patrizio Massoli;
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micro gas turbine; Organic Rankine Cycle; Waste Heat Recovery; R1336mzz-Z; biomass gasification; CFD;

机译：微燃气轮机;有机朗肯循环;废热回收;R1336MZZ-Z;生物质气化;差价合约;

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机译：小型生物质气化双燃料联合循环电厂的技术经济评估
2. INTEGRATED BIOMASS GASIFICATION SMALL-SCALE COMBINED CYCLE DISTRIBUTED GENERATION PLANT WITH MICROTURBINE AND ORC [J] . Jacek KALINA Proceedings of the ASME Advanced Energy Systems Division . 2010,第Null期

机译：微型燃气轮机和兽人生物质气化小规模联合循环分布式发电装置
3. Performance evaluation of an integrated small-scale SOFC-biomass gasification power generation system [J] . Suranat Wongchanapai, Hiroshi Iwai, Motohiro Saito, Journal of power sources . 2012,第OCTa15期

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5. Numerical modeling of small-scale biomass straw gasifier. [D] . Balcha, Daniel Asrat. 2010

机译：小型生物质秸秆气化炉的数值模拟。
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7. This article presents a new numerical model describing the behaviour of a thermally thick wood sample exposed to high solar heat flux (above 1 MW/m2). A preliminary study based on dimensionless numbers is used to classify the problem and support model building assumptions. Then, a model based on mass, momentum and energy balance equations is proposed. These equations are coupled with liquid-vapour drying model and pseudo species biomass degradation model. By comparing to a former experimental study, preliminary results have shown that these equations are not enough to accurately predict biomass behaviour under high solar heat flux. Indeed, a char layer acting as radiative shield forms on the sample exposed surface. In addition to this classical set of equations, it is mandatory to take into account radiation penetration into the medium. Furthermore, as biomass contains water, medium deformation consecutively to char steam gasification must also be implemented. Finally, with the addition of these two strategies, the model is able to properly capture the degradation of biomass when exposed to high radiative heat flux over a range of sample initial moisture content. Additional insights of biomass behaviour under high solar heat flux were also derived. Drying, pyrolysis and gasification fronts are present at the same time inside of the sample. The coexistence of these three thermochemical fronts leads to char gasification by the steam produced from drying of the sample, which it is the main phenomenon behind medium ablation. [O] . Pozzobon, Victor, Salvador, Sylvain, Bézian, Jean Jacques 2018

机译：本文提供了一个新的数值模型，该模型描述了暴露于高太阳热通量（高于1 / MW / m2）的热厚木材样品的行为。基于无量纲数的初步研究用于对问题进行分类并支持模型构建假设。然后，提出了一种基于质量，动量和能量平衡方程的模型。这些方程式与液体蒸汽干燥模型和假物种生物质降解模型耦合。通过与以前的实验研究进行比较，初步结果表明，这些方程不足以准确预测高太阳热通量下的生物量行为。的确，在样品暴露的表面上形成了充当辐射屏蔽层的炭层。除了这套经典的方程式之外，还必须考虑到辐射向介质的渗透。此外，由于生物质中含有水，因此还必须在炭蒸气汽化后进行连续的介质变形。最后，通过添加这两种策略，该模型能够在一定范围的样品初始水分含量下暴露于高辐射热通量的情况下，正确捕获生物质的降解。还得出了在高太阳热通量下生物量行为的其他见解。样品内部同时存在干燥，热解和气化前沿。这三个热化学前沿的共存会导致样品干燥产生的蒸汽产生焦炭气化，这是介质烧蚀的主要现象。
8. Biomass-Fueled, Small-Scale, Integrated-Gasifier, Gas-Turbine Power Plant:Progress Report on the Phase 2 Development [R] . Purvis, C. R., Craig, J. D. 2000

机译：生物质燃料，小型，综合气化炉，燃气轮机发电厂：第二阶段发展进度报告

NUMERICAL STUDY OF A SMALL-SCALE MICRO GAS TURBINE-ORC POWER PLANT INTEGRATED WITH A BIOMASS GASIFIER

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