Abstract
The physical and predictive mathematical models of heat and mass transfer, phase transformations and chemical reaction have been developed to determine the necessary and sufficient conditions of inflammation and fire nascence at typical cable lines electrical overloads. The integral characteristics of study process complex - ignition delay times have been established according to cable lines electrical overloads modes. The temperature distributions in typical cable lines at overloads have been determined. The concentration variation characteristic ranges (which are sufficient for gas-phase ignition) of thermal decomposition components of cable sheaths at overloads have been adduced. The two-dimensional heat-and-mass transfer problem for a three-layer cable in the area of limited heat sink is solved. Thermal decomposition of the cable sheath and diffusion of thermal decomposition components and air were taken into account. Fire risk assessment of cable lines on overload in conditions of limited heat transfer is carried out. The dependence of ignition time delay for mixture of oxidized and thermal decomposition components from intensity of a current.
| Original language | English |
|---|---|
| Title of host publication | EPJ Web of Conferences |
| Publisher | EDP Sciences |
| Volume | 82 |
| DOIs | |
| Publication status | Published - 20 Jan 2015 |
| Event | Thermophysical Basis of Energy Technologies - 2014 - Tomsk, Russian Federation Duration: 15 Oct 2014 → 17 Oct 2014 |
Other
| Other | Thermophysical Basis of Energy Technologies - 2014 |
|---|---|
| Country | Russian Federation |
| City | Tomsk |
| Period | 15.10.14 → 17.10.14 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Forecasting investigation of mode fire hazard of electrical overload of cable lines. / Grigorieva, Mooza M.; Ivanova, Evgenia Vladimirovna; Strizhak, Pavel A.
EPJ Web of Conferences. Vol. 82 EDP Sciences, 2015. 01031.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Forecasting investigation of mode fire hazard of electrical overload of cable lines
AU - Grigorieva, Mooza M.
AU - Ivanova, Evgenia Vladimirovna
AU - Strizhak, Pavel A.
PY - 2015/1/20
Y1 - 2015/1/20
N2 - The physical and predictive mathematical models of heat and mass transfer, phase transformations and chemical reaction have been developed to determine the necessary and sufficient conditions of inflammation and fire nascence at typical cable lines electrical overloads. The integral characteristics of study process complex - ignition delay times have been established according to cable lines electrical overloads modes. The temperature distributions in typical cable lines at overloads have been determined. The concentration variation characteristic ranges (which are sufficient for gas-phase ignition) of thermal decomposition components of cable sheaths at overloads have been adduced. The two-dimensional heat-and-mass transfer problem for a three-layer cable in the area of limited heat sink is solved. Thermal decomposition of the cable sheath and diffusion of thermal decomposition components and air were taken into account. Fire risk assessment of cable lines on overload in conditions of limited heat transfer is carried out. The dependence of ignition time delay for mixture of oxidized and thermal decomposition components from intensity of a current.
AB - The physical and predictive mathematical models of heat and mass transfer, phase transformations and chemical reaction have been developed to determine the necessary and sufficient conditions of inflammation and fire nascence at typical cable lines electrical overloads. The integral characteristics of study process complex - ignition delay times have been established according to cable lines electrical overloads modes. The temperature distributions in typical cable lines at overloads have been determined. The concentration variation characteristic ranges (which are sufficient for gas-phase ignition) of thermal decomposition components of cable sheaths at overloads have been adduced. The two-dimensional heat-and-mass transfer problem for a three-layer cable in the area of limited heat sink is solved. Thermal decomposition of the cable sheath and diffusion of thermal decomposition components and air were taken into account. Fire risk assessment of cable lines on overload in conditions of limited heat transfer is carried out. The dependence of ignition time delay for mixture of oxidized and thermal decomposition components from intensity of a current.
UR - http://www.scopus.com/inward/record.url?scp=84921785085&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84921785085&partnerID=8YFLogxK
U2 - 10.1051/epjconf/20158201031
DO - 10.1051/epjconf/20158201031
M3 - Conference contribution
VL - 82
BT - EPJ Web of Conferences
PB - EDP Sciences
ER -