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

加拿大约有290个偏远地区，人口约为194000。这些地区需要高效**和独立的发电机组来满足他们的能源需求。Etalim Inc.是一家与能源相关的**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在燃烧器内燃烧天然气和空气混合物。**现有的Etalim燃烧器使用分离和层流预混火焰配置，这会导致两个**问题。首先，分离的火焰结构允许未燃烧的燃料逃逸到燃烧器排气中，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，层流预混火焰的放热比湍流火焰的放热小得多。拟议项目的主要目标是通过**修改燃烧器设计来提高Etalim燃烧器的热释放能力。**上述目标将通过三项任务来实现。首先，将使用基于激光的诊断技术来测量**现有燃烧器的燃烧放热功率，作为比较的基准。第二，现有的燃烧器将被配备有穿孔板式湍流发生器的本生型燃烧器(产生湍流预混火焰)所取代。该发生器将具有模块化特征，允许**改变湍流特性，从而使燃烧放热。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的测量结果进行比较。将指定导致最大热量释放的湍流**发生器配置，并将修改后的燃烧器设计**与湍流发生器一起转移到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.