甲烷和富氢甲烷先导喷注对磷光体测温缩小燃烧器喷嘴表面温度的影响

IF 1.3 Q2 ENGINEERING, AEROSPACE
Henrik Feuk, Francesco Pignatelli, A. Subash, Ruike Bi, R. Szász, X. Bai, D. Lörstad, M. Richter
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引用次数: 1

摘要

在设计用于模拟西门子DLE(干式低排放)燃烧器的燃气轮机模型燃烧器中,使用ZnS:Ag磷光体的寿命磷光体测温法测量了使用三种不同引燃硬件配置的燃烧器喷嘴的表面温度。三种先导硬件配置包括非预混先导喷射设置和两种部分预混先导注射,其中一种具有相对较高的预混合程度。对于每个引燃器硬件配置,燃烧器使用甲烷或富氢甲烷(H2/CH4:50/50体积%)运行。与纯甲烷相比,引燃火焰的局部加热对富氢甲烷来说要显著得多,因为引燃火焰通常更紧密地附着在富氢甲烷的引燃喷嘴上。对于甲烷燃料,与非预混引燃喷射配置相比,混合度较低的部分预混引燃喷嘴配置的燃烧器喷嘴的平均表面温度高出约40K。相比之下,对于富氢甲烷燃料,由于靠近喷嘴的框架结构,不同引燃喷射硬件配置之间的表面温度差异要小得多。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of Methane and Hydrogen-Enriched Methane Pilot Injection on the Surface Temperature of a Scaled-Down Burner Nozzle Measured Using Phosphor Thermometry
The surface temperature of a burner nozzle using three different pilot hardware configurations was measured using lifetime phosphor thermometry with the ZnS:Ag phosphor in a gas turbine model combustor designed to mimic the Siemens DLE (Dry Low Emission) burner. The three pilot hardware configurations included a non-premixed pilot injection setup and two partially premixed pilot injections where one had a relatively higher degree of premixing. For each pilot hardware configuration, the combustor was operated with either methane or hydrogen-enriched methane (H2/CH4: 50/50 in volume %). The local heating from pilot flames was much more significant for hydrogen-enriched methane compared with pure methane due to the pilot flames being in general more closely attached to the pilot nozzles with hydrogen-enriched methane. For the methane fuel, the average surface temperature of the burner nozzle was approximately 40 K higher for the partially premixed pilot injection configuration with a lower degree of mixing as compared to the non-premixed pilot injection configuration. In contrast, with the hydrogen-enriched methane fuel, the differences in surface temperature between the different pilot injection hardware configurations were much smaller due to the close-to-nozzle frame structure.
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来源期刊
CiteScore
2.30
自引率
21.40%
发文量
29
审稿时长
11 weeks
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