scholarly journals Numerical Simulation of the Effect of CH4/CO Concentration on Combustion Characteristics of Low Calorific Value Syngas

ACS Omega ◽  
2021 ◽  
Vol 6 (8) ◽  
pp. 5754-5763
Author(s):  
Jianing Chen ◽  
Guoyan Chen ◽  
Anchao Zhang ◽  
Haoxin Deng ◽  
Xiaoping Wen ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Calorific Value ◽  
Combustion Characteristics ◽  
Co Concentration

Synergistic Investigation for Co-Combustion of Biochars and Lignite—Thermogravimetric Analysis Approach

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
H. Haykiri-Acma ◽  
S. Yaman
Keyword(s):  
Thermal Analysis ◽  
Thermogravimetric Analysis ◽  
Hybrid Poplar ◽  
Calorific Value ◽  
High Reactivity ◽  
Combustion Characteristics ◽  
Heterogeneous Reactions ◽  
Analysis Approach ◽  
Fundamental Change ◽  
Burning Behavior

Abstract This paper addresses whether synergistic interaction or additive behavior govern the co-combustion characteristics of lignite and biochars produced from hybrid poplar (HP), ash tree (AT), and rhododendron (RH). The biochars were blended with lignite and the burning behavior was investigated by thermal analysis. Upon carbonization, fundamental change occurred in the burning mechanisms of biomass from homogeneous to heterogeneous reactions. Blending the lignite with biochars led to improvement in the calorific value and reductions in the ash yield. Carbonization limited the high reactivity of biomass, and the reactivities of biochars became closer to the lignite's reactivity, consequently they burned in accord without segregation.

scholarly journals Research on factors affecting bus fire based on numerical simulation

2021 ◽  
Vol 303 ◽  
pp. 01042
Author(s):  
Min Xu ◽  
Pengyi Bu ◽  
Lin Xin ◽  
Chao Li ◽  
Limin Han ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Heating Rate ◽  
Rapid Development ◽  
Factors Affecting ◽  
Smoke Spread ◽  
Fire Smoke ◽  
Co Concentration ◽  
In Fire

With the rapid development of economy, the number of buses and bus fire increases. This paper takes bus as the research object and uses software FDS to explore the fire smoke spread under different fire power conditions. The results show that: with the increase in fire power, the smoke in the compartment rapidly accumulates, and the heating rate is also accelerated. The visibility decreases with the diffusion of smoke in the compartment. The CO concentration increases with time. The greater the fire power, the higher the temperature which will eventually stabilize. Only the concentration of smoke near the entrance will be slightly reduced. This is also conducive to the escape of people inside the car.

Numerical simulation of high-temperature fusion combustion characteristics for a single biomass particle

2019 ◽  
Vol 183 ◽  
pp. 27-34 ◽  
Author(s):  
Yao Xu ◽  
Ming Zhai ◽  
Shuai Jin ◽  
Xun Zou ◽  
Shubin Liu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
High Temperature ◽  
Combustion Characteristics

Numerical simulation of the effect of hydrogen addition fraction on catalytic micro-combustion characteristics of methane-air

2014 ◽  
Vol 39 (4) ◽  
pp. 1864-1873 ◽  
Author(s):  
Yunfei Yan ◽  
Weimin Tang ◽  
Li Zhang ◽  
Wenli Pan ◽  
Zhongqing Yang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Combustion Characteristics ◽  
Hydrogen Addition

Numerical Simulation of Bio-Oil Emulsion Combustion in the Direct-Flow Combustor

2011 ◽  
Vol 347-353 ◽  
pp. 3582-3586
Author(s):  
Qi Wang
Keyword(s):  
Numerical Simulation ◽  
Temperature Distribution ◽  
Ignition Delay ◽  
Simulation Method ◽  
Combustion Characteristics ◽  
Direct Flow ◽  
Oil Emulsion ◽  
Numerical Simulation Method ◽  
Bio Oil

In order to estimate the adaptability of the diesel combustor, the combustion characteristics of pure diesel and emulsions of bio-oil and diesel (with 5wt% and 50wt% bio-oil contents) were investigated by numerical simulation method. The factors including ignition delay, temperature distribution and combustion components distribution in the combustor were studied. The combustion characteristics of 5wt% bio-oil emulsion were nearly consistent with those of pure diesel. The only minor difference was that its ignition delayed slightly to the upstream. In contrast, 50wt% bio-oil emulsion had different performences in the combustor, whose ignition was shortly delayed.

scholarly journals Combustion Characteristics of Low-Calorific-Value Gaseous Fuels in Small Gas Engine

2009 ◽  
Vol 4 (1) ◽  
pp. 188-197 ◽  
Author(s):  
Yudai YAMASAKI ◽  
Go TOMATSU ◽  
Yuki NAGATA ◽  
Shigehiko KANEKO
Keyword(s):  
Calorific Value ◽  
Combustion Characteristics ◽  
Gas Engine ◽  
Gaseous Fuels
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