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Rychly J.,Slovak Academy of Sciences | Hudakova M.,Fire Research Institute | Rychla L.,Slovak Academy of Sciences
Journal of Thermal Analysis and Calorimetry | Year: 2014

The burning of polyethylene in the mixture with aluminium hydroxide, aluminium oxide, cellulose and Irganox 1010 has been examined by cone calorimeter under non-standard sizes of the sample. The time to ignition of pure polyethylene decreases with decreasing initial amount of polyethylene powder. The subtraction of the mass of water released from the total mass lost for polyethylene with aluminium hydroxide give the same values of effective heats of combustion as for pure polyethylene up to the load about 50 mass% of aluminium hydroxide. The mean heats of combustion determined from the cone calorimeter software are higher than those determined from the total oxygen consumed and mass lost multiplied by the factor 13.1. The additivity rule was found for effective heat of combustion and total smoke released for polyethylene with cellulose. The free radical scavenger Irganox 1010 does not show a significant effect on the flammability of polyethylene except for the increase of the total smoke released. The equation describing the heat release rate evolution in time has been proposed showing a good fit to the experimental runs. © 2013 Akadémiai Kiadó, Budapest, Hungary. Source

Sedliak M.,Technical University In Zvolen | Majlingova A.,Fire Research Institute
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM | Year: 2014

In the paper we introduce the results of mapping and spatial analysis of volume [t.ha-1] distribution of particular fuel types in the forests of the Slovensky raj National Park that were affected by a fire in 2007. To map and quantify the particular fuel types in study area we used the Trimble GeoXT device to record the position of individual study plots, which the weight and the height of particular forest types (layers) were measured on. Data measured were processed in ArcGIS Desktop 10 environment. Results were saved in tables and raster layers with the spatial resolution of 2 meters. These results contain information on volume of surface forest fuel types in different types of terrain. The most of fuel was stored in valleys with lower value of curvature, and the least of fuel was stored in ridge positions with higher value of curvature. We introduce also the values for different altitudes, aspects and slopes. The information on forest fuel distribution and its volume is required as input information for modeling of forest fire behavior in the majority GIS based fire behavior models, e.g. FARSITE, FlamMap. To know the behavior of forest fore ahead is a very good prerequisite for planning of effective fire preventive and mitigation measures to protect the human lives, their property, but also environmental and economic interests and values. © 2014, SGEM. All Rights Reserved. Source

Kim Y.,Fire Research Institute | Makarov D.,University of Ulster | Kashkarov S.,University of Ulster | Joseph P.,Victoria University of Melbourne | Molkov V.,University of Ulster
International Journal of Hydrogen Energy | Year: 2016

This paper describes a 1-D numerical model for the prediction of heat and mass transfer through an intumescent paint that is applied to an on-board high-pressure GH2 storage tank. The intumescent paint is treated as a composite system, consisting of three general components, decomposing in accordance with independent finite reaction rates. A moving mesh, that is employed for a better prediction of the expansion process of the intumescent paint, is based on the local changes of heat and mass. The numerical model is validated against experiments by Cagliostro et al. (1975). The overall model results are used to estimate effect of intumescent paint on fire resistance of carbon-fibre reinforced GH2 storage. © 2016 Hydrogen Energy Publications, LLC. Source

Mitterova I.,Technical University In Zvolen | Zachar M.,Technical University In Zvolen | Ruzinska E.,Technical University In Zvolen | Majlingova A.,Fire Research Institute
Advanced Materials Research | Year: 2014

The paper deals with the protection of the wood and its evaluation in terms of fire. It aims in comparison of ignitability of the unprotected and retardant protected samples of spruce wood, using the testing method defined in the STN EN 11925-2: 2011 (test with single-flame source), where the main evaluation criterion is the ignition and flame spread over the surface of the test samples. © (2014) Trans Tech Publications, Switzerland. Source

Ruzinska E.,Technical University In Zvolen | Mitterova I.,Technical University In Zvolen | Zachar M.,Technical University In Zvolen | Majlingova A.,Fire Research Institute | And 2 more authors.
Materials Science Forum | Year: 2015

The paper deals with the protection of wood in wood building constructions, in accordance to the current trends in the use of organic materials in the construction sector and also in the woodworking industry. The attention is paid to the assessment of the effectiveness of selected retardant protective substances applied to spruce wood that was thermally loaded for prediction of flammability properties and assessing the suitability of their application. In the experiment, there was used the modified testing method with evaluation of the characteristics of thermal degradation. At the same time, there were evaluated selected material characteristics, in relation to the adhesion of retarding coatings applied. © (2015) Trans Tech Publications, Switzerland. Source

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