Experimental study on flame characteristics of double fires in a naturally ventilated tunnel: Flame merging, flame tilt angle and flame height

2021 ◽  
Vol 114 ◽  
pp. 103912
Author(s):  
Kun He ◽  
Xudong Cheng ◽  
Ying Zhen Li ◽  
Haukur Ingason ◽  
Zhicheng Shi ◽  
...  
Keyword(s):  
Experimental Study ◽  
Tilt Angle ◽  
Flame Height

An Experimental Study on Improvement in Thermal Efficiency of Mesh Wick Heat Pipe

2014 ◽  
Vol 592-594 ◽  
pp. 1423-1427 ◽  
Author(s):  
G. Kumaresan ◽  
S. Venkatachalapathy ◽  
Indraneel C. Naik
Keyword(s):  
Experimental Study ◽  
Heat Pipe ◽  
Inclination Angle ◽  
Tilt Angle ◽  
Thermal Efficiency ◽  
Cuo Nanoparticles

This study aims to investigate the influence of inclination angle and concentration of nanoparticles on the improvement in heat pipe thermal efficiency. Spherical shaped, 40 nm size CuO nanoparticles are used in this study and its physical and thermal chracteristics are investigated. The results are compared with a heat pipe using DI water at horizontal position.The thermal efficiency is improved by increasing the tilt angle and mass of particles dispersed in DI water. The improvement in thermal efficiency obtained are 20.59, 35.92 and 32.57% respectively for 0.5, 1.0 and 1.5 wt% of CuO nanofluids and 60° inclination angle.

Effect Of Cross-Winds To Apparent Flame Height And Tilt Angle From Several Kinds Of Fire Source

2003 ◽  
Vol 7 ◽  
pp. 915-926 ◽  
Author(s):  
Y. Oka ◽  
Osami Sugawa ◽  
T. Imamura ◽  
Y. Matsubara
Keyword(s):  
Tilt Angle ◽  
Flame Height ◽  
Fire Source

Experimental study on vertical rigid and flexible polyurethane fire suppression using water spray

2019 ◽  
pp. 089270571987918
Author(s):  
Hengze Zhao ◽  
Ye Li ◽  
Yipei Qi ◽  
Xuanmeng Dong ◽  
Yongming Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Video Processing ◽  
Fire Suppression ◽  
Application Rate ◽  
Flame Height ◽  
Operating Pressure ◽  
Water Spray ◽  
Surface Cooling ◽  
Front Position ◽  
Flexible Polyurethane

A series of vertical fire suppression experiments on rigid polyurethane (RPU) and flexible polyurethane (FPU) with/without water spray were conducted in a standard chamber. A new video processing method was developed to determine the pyrolysis front position of wind-aided flame. Averaged flame height, carbon monoxide/hydrogen cyanide concentration, view factors, and extinguishing time were determined with operating pressure varying from 0.15 MPa to 0.4 MPa. The experimental study showed that water spray would suppress RPU/FPU fire mainly by fuel surface cooling. Furthermore, the perfect water spray pressure for RPU/FPU fire suppression was 0.3 MPa and the corresponding water application rate was 0.7511 mg/(cm2·s).

scholarly journals Experimental Study of the Tilt Angle Body of Towing Vehicle with Different Load

2017 ◽  
Vol 177 ◽  
pp. 271-274 ◽  
Author(s):  
Jakub Polasik ◽  
Konrad J. Waluś ◽  
Janusz Mielniczuk
Keyword(s):  
Experimental Study ◽  
Tilt Angle

Design and Experimental Study of the Multi-Function Corn Peeling Machine with Analysis of Segmented Metal Construction Materials

2012 ◽  
Vol 600 ◽  
pp. 144-147
Author(s):  
Chun Hua Zhao ◽  
Tao Zhao ◽  
Bao Long Hu
Keyword(s):  
Experimental Study ◽  
Tilt Angle ◽  
Orthogonal Experiment ◽  
Construction Materials ◽  
Optimal Combination ◽  
Metal Construction ◽  
Experiment Method ◽  
Shaped Roller ◽  
Orthogonal Experiment Method ◽  
Main Material

Peeling roller is an important working part of multi-function corn peeling machine which can stripping the skin of eaten fresh corn, forage corn and seeding corn. The main material of peeling roller was analysed in this paper, The orthogonal experiment method was used to study the effect of peeling roller’s shape, speed and tilt angle on the corn peeling machine’s performance. The results showed that the material and type of peeling roller has the most significant impact on it. The optimal combination of three factors was A2B3C1: “person shaped” roller-type, 550r/min roller’s speed and 10°peeling angle.

An experimental study of flame height and air entrainment of buoyancy-controlled jet flames with sidewalls

Fuel ◽  
2016 ◽  
Vol 183 ◽  
pp. 164-169 ◽  
Author(s):  
C.F. Tao ◽  
Y. Shen ◽  
R.W. Zong ◽  
F. Tang
Keyword(s):  
Experimental Study ◽  
Air Entrainment ◽  
Flame Height ◽  
Jet Flames

Experimental Study on CH4 / Air Diffusion Combustion on the Upper Surface of Porous Media Packed Beds

2012 ◽  
Vol 516-517 ◽  
pp. 62-65 ◽  
Author(s):  
Xin Zhang Huang ◽  
Xiu Li Zhang ◽  
Jun Rui Shi ◽  
Zhi Jia Xue ◽  
You Ning Xu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Porous Media ◽  
Packed Bed ◽  
Flame Height ◽  
Diffusion Combustion ◽  
Packed Beds ◽  
Flame Shape ◽  
Air Diffusion

This paper experimentally study on CH4/ air co-flow diffusion combustion on the upper surface of porous media packed beds. The flame height and flame shape were reconstructed from the upper and the side of the combustor. The influence of the height of the packed bed on the flame height and flame shape is reported. It is shown that the flame height decreases rapidly and the circular diameter increases rapidly with increase the height of the packed beds.

Experimental study on the characteristics of flame merging and tilt angle from twin propane burners under cross wind

Energy ◽  
2019 ◽  
Vol 174 ◽  
pp. 1200-1209 ◽  
Author(s):  
Bo Li ◽  
Huaxian Wan ◽  
Zihe Gao ◽  
Jie Ji
Keyword(s):  
Experimental Study ◽  
Tilt Angle

scholarly journals Experimental study of transitional behavior of fully developed under-ventilated compartment fire and associated facade flame height evolution

2019 ◽  
Vol 208 ◽  
pp. 235-245 ◽  
Author(s):  
Fei Ren ◽  
Longhua Hu ◽  
Xiaolei Zhang ◽  
Xiepeng Sun ◽  
Jianping Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Flame Height ◽  
Compartment Fire ◽  
Transitional Behavior
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