Estimation of rate of heat release by means of oxygen consumption measurements

Huggett, Clayton

doi:10.1002/fam.810040202

Cited by 841 publications

(522 citation statements)

References 4 publications

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“…The heat of combustion per unit oxygen consumed is assumed to be identical for methane and for the test specimen (the methane value is about 4% lower than for "typical" plastics [8]). …”

Section: Full-scale Evaluationmentioning

confidence: 99%

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Combustion of mattresses exposed to flaming ignition sources part II. Bench-scale tests and recommended standard test

Babrauskas¹

1981

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“…The heat of combustion per unit oxygen consumed is assumed to be identical for methane and for the test specimen (the methane value is about 4% lower than for "typical" plastics [8]). …”

Section: Full-scale Evaluationmentioning

confidence: 99%

“…Details of the theoretical principles of oxygen consumption calorimetry have been described by Huggett [8],…”

Section: Full-scale Evaluationmentioning

confidence: 99%

Combustion of mattresses exposed to flaming ignition sources part II. Bench-scale tests and recommended standard test

Babrauskas¹

1981

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“…According to the DSC analysis of multiple peat samples in Bergner and Albano (1993), ∆H O 2 = −30 MJ/kg is estimated for this low-mineral moss peat. The oxygen consumption is related to the heat of oxidation as ν O 2 ,k = ∆H k /(-13.1 MJ/kg) (Huggett, 1980).…”

Section: Parameter Selectionmentioning

confidence: 99%

Interactions of Earth's atmospheric oxygen and fuel moisture in smouldering wildfires

Huang

Rein

2016

Science of The Total Environment

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Vegetation, wildfire and atmospheric oxygen on Earth have changed throughout geological times, and are dependent on each other, determining the evolution of ecosystems, the carbon cycle, and the climate, as found in the fossil record. Previous work in the literature has only studied flaming wildfires, but smouldering is the most persistent type of fire phenomena, consuming large amounts of biomass. In this study, the dependence of smouldering fires in peatlands, the largest wildfires on Earth, with atmospheric oxygen is investigated. A physics-based computational model of reactive porous media is developed which was previously validated against experiments. Simulations are conducted for wide ranges of atmospheric oxygen concentrations and fuel moisture contents to find thresholds for ignition and extinction. Results show that the predicted rate of spread increases in oxygen-rich atmospheres, while it decreases over wetter fuels. A novel nonlinear relationship between critical oxygen and critical moisture is found. More importantly, we show that compared to previous work on flaming fires, smouldering fires can be ignited and sustained at a substantially higher moisture content (> 100%), and at a substantially lower oxygen concentration (∼ 12%). This defines a possible lower oxygen threshold for wildfire and could help interpret the char remains and paleo fire activities seen in the fossil record.

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“…The edges of the sample are protected by a ceramic clay that has virtually no shrinkage or mass loss from water evaporation under the test conditions The principle behind the test method relies on the fact that the majority of fuels release the same amount of heat, when measured on the basis of mass of oxygen consumed [6]. The value used here is 13.1 MJkg of oxygen consumed.…”

Section: Cone Calorimetry Of Conveyor Belt Materialsmentioning

confidence: 99%

A Numerical Study Of Smoke Movement Along An Inclined Coal Conveyor

Green¹,

Fletcher²

1997

Fire Safety Science - Proceedings of the 5th International Symp

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Conveyor belt systems used in underground mines have the potential to give rise to severe fires unless they are made from a suitable material. Statistical data on such fires show that the most significant risk is from collapsed idler rollers We have performed a study to assess the characteristics of such fires and to determine their influence on personnel working within an underground system. Cone Calorimeter testing was carried out to determine the combustion properties of typical belt materials. From this information, we used Computational Fluid Dynamics (CFD) to simulate the spread of heat and smoke through the tunnel. These simulations showed that the fire results in a strong plume which causes smoke and hot gases to form a stratified layer along the roof of the tunnel and to curl back down in the region of the fire because of the interaction of the plume with the roof The consequences of the fire on personnel working in the region of the conveyor are considered.

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Estimation of rate of heat release by means of oxygen consumption measurements

Cited by 841 publications

References 4 publications

Combustion of mattresses exposed to flaming ignition sources part II. Bench-scale tests and recommended standard test

Combustion of mattresses exposed to flaming ignition sources part II. Bench-scale tests and recommended standard test

Interactions of Earth's atmospheric oxygen and fuel moisture in smouldering wildfires

A Numerical Study Of Smoke Movement Along An Inclined Coal Conveyor

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