Development of an industrial burner: Heat release enhancement through intensified turbulent premixed combustion

加拿大有大约290个偏远地区，人口约194000。这些地区需要高效 ** 和独立的发电机组来满足其能源需求。Etalim Inc.是一家能源相关的 ** 公司，为加拿大 ** 偏远地区开发小型（1-5千瓦）天然气燃料发电机。发电机运行的关键是天然气和空气混合物在燃烧器内的燃烧。**现有的Etalim燃烧器利用分离和层流预混火焰配置，这导致两个问题。首先，分离火焰配置允许未燃烧的燃料逃逸到燃烧器排气，导致未燃烧的天然气排放。其次，燃烧器的层流火焰结构限制了发电机的电力输出。这是因为功率输出与燃烧放热直接相关，** 并且层流预混火焰的特点是与湍流 ** 火焰相比放热明显更小。拟议项目的主要目标是通过 ** 修改燃烧器设计，提高Etalim燃烧器的热释放能力。将通过三项任务实现上述目标。首先，将使用基于激光的诊断作为比较基准来测量 ** 现有燃烧器的燃烧热释放功率。第二，** 现有的燃烧器将被本生型燃烧器（产生湍流预混火焰）取代，该燃烧器配备 ** 有一个穿孔板型湍流发生器。该发电机将具有模块化特征，允许 ** 改变湍流特性，并因此改变燃烧热释放。在第三项任务中，使用基于激光的诊断，将测量几种湍流发生器 ** 操作配置的燃烧热释放，并将结果与第一项任务中测量的结果进行比较。将指定导致最大化热释放的湍流发生器配置，并将修改的燃烧器设计 ** 连同湍流发生器沿着转移至Etalim。

Canada has about 290 remote areas with an approximate population of 194000. These areas require efficient**and stand-alone power generator units for addressing their energy needs. Etalim Inc. is an energy-related**company that develops small scale (1-5 kW) natural gas-fueled electric power-generators for the Canadian**remote areas. Key to operation of the generators is combustion of natural gas and air mixture inside a burner.**The existing Etalim burner utilizes a detached and laminar premixed flame configuration that causes two**issues. First, the detached flame configuration allows for escape of unburnt fuel to the burner exhaust, leading**to unburnt natural gas emission. Second, the laminar flame configuration of the burner limits the electric power**output from the generator. This is because the power output is directly related to the combustion heat release,**and that the laminar premixed flames feature significantly smaller heat release compared to that of the turbulent**flames. The primary objective of the proposed project is to enhance the Etalim burner heat release power by**modifying the burner design.**The above objective will be addressed through three tasks. First, the combustion heat release power of the**existing burner will be measured using laser-based diagnostics as a benchmark for comparisons. Second, the**existing burner will be replaced with a Bunsen-type burner (that produces turbulent premixed flames) equipped**with a perforated plate-type turbulence generator. This generator will have modular features which allow for**changing the turbulent flow characteristics, and as a result the combustion heat release. In the third task, using**laser-based diagnostics, the combustion heat release will be measured for several turbulence generator**operating configurations and the results will be compared to those measured from the first task. The turbulence**generator configuration that leads to maximized heat release will be specified, and the modified burner design**along with the turbulence generator will be transferred to Etalim.