Wetting-induced ignition in cellulosic materials

Gray, B.F.; Sexton, M. J.; Halliburton, Brendan; Macaskill, C.

doi:10.1016/s0379-7112(02)00002-4

Cited by 46 publications

(64 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An energy change from these reactions is represented by the fourth term in Equation (1). These equations are based on the works of Gray et al [6], Sexton et al [18] and Sisson et al [19]. These authors developed models for the self heating process within a bagasse pile that include the effects of variations in state between the vapour and liquid water within a pile and the resultant energy changes.…”

Section: C39mentioning

confidence: 99%

See 1 more Smart Citation

A two dimensional, reaction-diffusion model of compost piles

Luangwilai

Sidhu

Nelson

2012

ANZIAMJ

View full text Add to dashboard Cite

We consider the self heating process in a two dimensional spatially dependent model of a compost pile which incorporates terms that account for self heating due to both biological and oxidation mechanisms. As moisture is a crucial factor in both the degradation process and spontaneous ignition within a compost pile, this model consists of four mass-balance equations, namely, energy, oxygen, vapour and liquid water concentrations. Analyses are undertaken for different initial water contents within the compost pile. We show that when the water content is too low, the reaction is almost negligible; whereas when it is too high, the reaction commences only when the water content evaporates and the water ratio drops to within an appropriate range. However, for an intermediate water content range, the biological reaction is at its optimum and there is a possibility of spontaneous ignition within the compost pile.

show abstract

Section: C39mentioning

confidence: 99%

“…The parameter values used in this investigation are based on those used by Gray et al [6], Kuwahara et al [12] and Sidhu et al [20], C41 and are provided in the nomenclature (Section 6).…”

Section: The Flexpdementioning

confidence: 99%

A two dimensional, reaction-diffusion model of compost piles

Luangwilai

Sidhu

Nelson

2012

ANZIAMJ

View full text Add to dashboard Cite

show abstract

“…Field studies [4] have suggested that intermittent cycling may actually increase the hazard. The self-heating process for wood is enhanced by the presence of moisture [17], either in situ which can increase the decomposition rate or on addition of moisture to dry wood which can release a substantial heat of wetting. Thus, a cyclic heating pattern may be preferentially eliciting exothermic contributions due to interaction with atmospheric moisture.…”

Section: à2mentioning

confidence: 99%

Prudent practices for the design and installation of heat‐producing devices near wood materials

Babrauskas¹,

Gray²,

Janssens

2006

Fire and Materials

View full text Add to dashboard Cite

SUMMARYThe conditions required to cause ignition of solid wood materials under short-term heating are examined, and it is found that the appropriate ignition temperature applicable under these conditions is 2508C. It is then shown that ignition requirements are different if long-term heating is involved and that ignition can occur at exposure temperatures much lower than the ignition temperature pertinent to short-term heating. It is shown that hot surfaces of 778C or higher, if located for a long duration next to a wood member are liable to lead to its ignition in a self-heating mode. Recommendation is made that prudent practices for design or installation must also involve a suitable safety factor.

show abstract

“…1 we plot f 0 ð0Þ against c for p ¼ 1 obtained from the numerical solution of Eq. (9). The numerical solution terminated at c ¼ À2, where f 0 ð0Þ becomes zero (we were only able to obtain the trivial solution f Àc for c\ À 2), and proceeded to large positive values of c with the values of f 0 ð0Þ increasing as c is increased.…”

Section: Steady Statesmentioning

confidence: 98%

“…This can set up a convective flow within the material which may help to dissipate the heat or alternatively can lead to enhanced heat generation and even thermal runaway with possibly disastrous consequences. Examples include the spontaneous ignition in stock piles of coal [1][2][3][4], in bagasse (the cellulose waste left after the extraction of sugar from sugar cane) [5,6] or in the wetting of cellulosic materials [7][8][9]. Previously we have modelled this problem assuming local heat generation at a rate proportional to ðT À T 1 Þ p , where T 1 is the (constant) ambient temperature and the exponent p !…”

Section: Introductionmentioning

confidence: 99%

The effects of wall transpiration on the unsteady free convection boundary-layer flow near a stagnation point in a heat generating porous medium

Merkin

2017

Meccanica

View full text Add to dashboard Cite

The natural convection boundary-layer flow near a stagnation point on a permeable surface embedded in a porous medium is considered when there is local heat generation within the boundary layer at a rate proportional to The initial-value problem reveals that, for 1 p\2, the nontrivial steady states are stable and the solution evolves to this state at large times. However, for p [ 2 these steady states are unstable and the solution either approaches the trivial state with the local heating dying out or a finite-time singularity develops for sufficiently large initial inputs.

show abstract

Wetting-induced ignition in cellulosic materials

Cited by 46 publications

References 11 publications

A two dimensional, reaction-diffusion model of compost piles

A two dimensional, reaction-diffusion model of compost piles

Prudent practices for the design and installation of heat‐producing devices near wood materials

The effects of wall transpiration on the unsteady free convection boundary-layer flow near a stagnation point in a heat generating porous medium

Contact Info

Product

Resources

About