Numerical investigation on combustion characteristics of premixed hydrogen/air in a swirl micro combustor with twisted vanes

被引：19
|
作者：
Gao, Wei [1 ]
Yan, Yunfei [1 ]
Huang, Lujing [2 ]
Zhang, Weiwei [3 ]
Shen, Kaiming [1 ]
机构：
[1] Chongqing Univ, Key Lab Low Grade Energy Utilizat Technol & Syst, Minist Educ, Chongqing 400030, Peoples R China
[2] Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
[3] Inner Mongolia Univ Technol, Coll Energy & Power Engn, Hohhot 010051, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 80期
关键词：
Swirl micro combustor; Combustion intensity; Combustion stability; Heat loss; EMISSION CHARACTERISTICS; THERMAL PERFORMANCE; TURBULENCE MODELS; FRONT-CAVITY; BLUFF-BODY; FLAME; STABILITY; CHANNEL; AIR; MICROCOMBUSTOR;
D O I：
10.1016/j.ijhydene.2021.09.193
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The combustion characteristics of the swirl micro combustor with twisted vanes (Swirl-MC-TV) and the conventional micro combustor (Conventional-MC) are investigated and compared under different inlet velocities (8-40 m/s), wall materials (quartz, steel, and SiC), and equivalence ratios (0.6-1.4). The results show that the larger area of recirculation zones and the stronger recirculation intensity are the key factors for Swirl-MC-TV to stable combustion. When the inlet velocity is 40 m/s, compared with the Conventional-MC, the wall heat loss of the Swirl-MC-TV is reduced by 15.9%, and the reaction heat and combustion efficiency of the Swirl-MC-TV are increased by 17.5% and 5.9%, respectively. When the wall materials of steel and SiC, combustors have a better preheating effect and higher combustion intensity. When the equivalence ratio is greater than 0.6, the wall heat loss of Swirl-MC-TV is larger but the combustion efficiency and the reaction intensity are still higher than Conventional-MC. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：40105 / 40119
页数：15
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