Results 21 to 30 of about 66,096 (310)
Flame Detection Method In Video Using Covariance Descriptors [PDF]
, 2011 Video fire detection system which uses a spatio-temporal covariance matrix of video data is proposed. This system divides the video into spatio-temporal blocks and computes covariance features extracted from these blocks to detect fire.
Osman Gunay +7 more
core +1 more source
Flame Detection for Video-Based Early Fire Warning for the Protection of Cultural Heritage [PDF]
, 2012 Cultural heritage and archaeological sites are exposed to the risk of fire and early warning is the only way to avoid losses and damages. The use of terrestrial systems, typically based on video cameras, is currently the most promising solution for ...
Tsalakanidou, Filareti +20 more
core +1 more source
Experimental investigation on flame characteristics in a porous-free flame burner [PDF]
Heat and Mass Transfer, 2020 Present work studies experimentally the flame characteristics of a premixed natural gas/air mixture in a porous-free flame (PFF) burner, and also it is compared with a conventional porous burner. For the PFF burner a hole is created at the center of the porous foam, which has a porosity of 87%, height of 22 mm and diameter of 90 mm, making a ...
Ghorashi, Seyed Amin +4 more
openaire +4 more sources
Burned Gas Characteristics of Laminar Lifted Flame at the Beginning of Stream Heating
Journal of Thermal Science and Technology, 2011 This research experimentally investigates the exhaust gas characteristics of a methane-air lifted-jet flame with elevated stream temperatures up to 450 K. Emission indices of NOx and CO were measured by direct gas sampling using a gas detector tube.
Mitsutomo HIROTA +2 more
doaj +1 more source
Thermal Response Characteristics of Concrete-Filled Steel Tube Columns with Flame Encapsulation Thickness [PDF]
E3S Web of ConferencesIn order to elucidate the influence of flame encapsulation thickness on the thermal response characteristics of concrete-filled steel tube columns in a fire environment, a study was conducted focusing on the primary control mechanism of heat radiation ...
Yang Can, Zhang Zhaoqiang
doaj +1 more source
Chemical Engineering Transactions, 2018 In order to study the propagation characteristics of coal dust explosion in the angular branch, gambit software is used to establish a model of the pipe network and to divide the grid.
Baichao Song, Yucheng Li
doaj +1 more source
Case Studies in Thermal Engineering, 2018 Upward flame spread characteristics over extruded polystyrene (XPS) foams with different porosities has been analyzed through experiments. In this paper, the average flame height and average maximum flame temperature first rise and then drop with ...
Qing xuan Meng +3 more
doaj +1 more source
A simulated study on intermittent flame feature of mass fire in channel structure
Case Studies in Thermal Engineering, 2022 Compared with the intermittent thermal-flame behavior in ordinary building, the flame behavior may also occur in mass fire inside channel structures, accompanied by distinct thermal characteristics, which is rarely studied.
Xi Zhang, Qing Lai, Huang Xiao, Jie Li
doaj +1 more source
Covariance matrix-based fire and flame detection method in video [PDF]
, 2011 This paper proposes a video-based fire detection system which uses color, spatial and temporal information. The system divides the video into spatio-temporal blocks and uses covariance-based features extracted from these blocks to detect fire.
Günay, O. +7 more
core +1 more source
Measurement Science Review, 2023 Equivalence ratio (Φ) is one of the most important parameters in combustion diagnostics. In previous studies, flame color characteristics have been widely applied to model the Φ of premixed hydrocarbon flames.
Yang Hao +4 more
doaj +1 more source