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J4  2011, Vol. 45 Issue (1): 151-156    DOI: 10.3785/j.issn.1008-973X.2011.01.026
能源与机械工程     
低热值燃气往复多孔介质燃烧特性
李涛,程乐鸣,郑成航
浙江大学 能源清洁利用国家重点实验室,浙江 杭州 310027
Combustion characteristics of low calorific gas in reciprocal
flow porous media burner
LI Tao, CHENG Le-ming, ZHENG Cheng-hang
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
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摘要:

为了研究低热值预混燃气(当量比<0.4)在往复式多孔介质燃烧器中的燃烧特性,建立两端布置蓄热段的往复多孔介质燃烧试验台,研究温度波动、轴向温度分布及燃烧极限的特性.结果表明,低热值预混燃气温度波动特性与火焰面位置有直接关系,两端布置蓄热段能够减小泡沫陶瓷多孔介质温度波动幅度.随着当量比的降低,轴向温度分布形状从“马鞍形”、“梯形”、“椭圆形”,变化到系统达到燃烧极限时形成的“三角形”分布.加入蓄热小球使高温段平均温度升高、排烟温度降低.燃烧极限与系统半周期、空截面流速及热负荷密切相关.系统能够达到的最低燃烧当量比为0.1.

Abstract:

An experimental system with regenerative sections at both ends was conducted to analyze the combustion characteristics of low calorific premixed gases (equivalence ratio<0.4)in a reciprocal flow porous media combustor. Temperature fluctuation, axial temperature distribution and flammability limits were investigated. Results show that the flame position directly influences the temperature fluctuation of exhaust gases; Adding regenerative sections leads to the reduction of temperature fluctuation amplitude in ceramic foam; the shape of axial temperature distribution has continuous changes, from saddle-shaped, ladder-shaped, oval-shaped to triangle-shaped when the system reaches flammability limit as the equivalence ratio decreases. The average temperature of high temperature zone rises and the temperature of exhaust gases falls by adding the regenerative sections. The flammability limit is closely related to halfperiod, inlet velocity and heat load. The flammability limit can be extended to the low equivalence ratio of 0.1.

出版日期: 2011-03-03
:  TQ 038.167  
基金资助:

国家“863”高技术研究发展计划资助项目(2006AA05Z223);教育部高等学校博士点基金资助项目(20070335138).

通讯作者: 程乐鸣,男,教授.     E-mail: lemingc@zju.edu.cn
作者简介: 李涛(1985-),男,湖北荆州人,硕士生,从事往复多孔介质燃烧研究.E-mail: litao1985@zju.edu.cn
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引用本文:

李涛,程乐鸣,郑成航. 低热值燃气往复多孔介质燃烧特性[J]. J4, 2011, 45(1): 151-156.

LI Tao, CHENG Le-ming, ZHENG Cheng-hang. Combustion characteristics of low calorific gas in reciprocal
flow porous media burner. J4, 2011, 45(1): 151-156.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.01.026        http://www.zjujournals.com/eng/CN/Y2011/V45/I1/151

[1] HANAMURA K, ECHIGO R. Super adiabatic combustion in a porous medium [J]. International Journal of Heat and Mass Transfer, 1993, 36(13): 3201-3209.
[2] ZHDANOK S, LAWRENCE A, KENNEDY, et al. Superadiabatic combustion of methane air mixtures under filtration in a packed bed [J]. Combustion and Flame, 1995, 100(2): 221-231.
[3] HANAMURA K, BOHDA K, MIYAIRI Y. A study of superadiabatic combustion engine [J]. Energy Convers, 1997, 38(10): 1259-1266.
[4] JUGJAI S, SOMJETLERTCHAROEN A. Multimode heat transfer in cyclic flow reversal combustion in a porous medium [J]. International Journal of Energy Research, 1999, 23(3): 183-206.
[5] 李昊,程乐鸣,王恩宇,等. 往复式多孔介质燃烧器温度分布的试验研究[J]. 浙江大学学报:工学版,2005,39(8):1184-1188.
LI Hao, CHENG Leming, WANG Enyu, et al. Temperature profiles of porous media combustor with reciprocating flow system [J]. Journal of Zhejiang University: Engineering Science, 2005, 39(8): 1184-1188.
[6] FABIANO C, ALEXEI V S, ALEXANDER A F, et al. A reciprocal flow filtration combustor with embedded heat exchangers: numerical study [J]. International Journal of Heat and Mass Transfer, 2003, 46(6): 949-961.
[7] DOBREGO K V, GNESDILOV N N, LEE S H , et al. Lean combustibility limit of methane in reciprocal flow filtration combustion reactor [J]. International Journal of Heat and Mass Transfer, 2008, 51(9/10): 2190-2198.
[8] JUGJAI S, NUNGNIYOM V. Cyclic operation of porous combustorheater (PCH) [J]. Fuel, 2009, 88(3): 553-559.
[9] 史俊瑞, 解茂昭,周磊. 往复流多孔介质燃烧器的二维数值模拟与结构改进[J]. 燃烧科学与技术,2007,13(3):280-285.
SHI Junrui, XIE Maozhao, ZHOU Lei. 2D numerical modeling and structure improvement of porous medium burner with reciprocating flow [J]. Journal of Combustion Science and Technology, 2007, 13(3): 280-285.
[10] 王关晴. 往复式热循环多孔介质燃烧系统特性研究与数值模拟[D]. 杭州: 浙江大学,2007:104-106.
WANG Guanqing. The numerical simulation and characteristics study of reciprocal porous media combustion with heat recirculation [D]. Hangzhou: Zhejiang University, 2007: 104-106.
[11] ECHIGO R, HANAMURA K, YOSHIDA H. Sophisticated thermoelectric conversion device of materials by superadiabatic combustion of reciprocating flow and advanced power generation system [C]∥ XI international conference on thermoelectrics. Yokohama: [s.n.], 1992: 45-50.
[12] 史俊瑞, 解茂昭, 周磊. 往复式惰性多孔介质燃烧器的可燃极限及最大半周期[J]. 化工学报,2007,58(8):1983-1988.
SHI Junrui, XIE Maozhao, ZHOU Lei. Flammable limits and maximum half cycle for inert porous medium burner with reciprocating flow [J]. Journal of Chemical Industry and Engineering, 2007, 58(8): 1983-1988.
[13] HOFFMANN J G, ECHIGO R, YOSHIDA H, et al. Experimental study on combustion in porous media with a reciprocating flow system [J]. Combustion and Flame, 1997, 111(1/2): 32-46.

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