Počet záznamov: 1
Comparsion of the activation energy required for spontaneous and flash point of the Norway spruce wood and thermowood specimens
SYS 0092771 LBL 00000naa^^22^^^^^^^^450 005 20171026112334.9 017 70
$a 10.17423/afx.2017.59.2.08 $2 DOI 100 $a 20171026d m y0sloc0103 ba 101 0-
$a eng 102 $a SK 200 1-
$a Comparsion of the activation energy required for spontaneous and flash point of the Norway spruce wood and thermowood specimens $f Martin Zachar ...[et al.] 215 $c Obr., tab. 320 $a Lit. 330 $a The important fire characteristics include also the data related to the material activation energy, which determination enhances the understanding of the combustion process, reasons of fire initiation and the typical behaviour of specific materials in thei r thermal degradation process. They can be also used as input parameters when modelling the dynamics of fires, on which base can be assessed existing fire safety measures and further proposed new one, more efficient, encompassing also the suitable design o f building construction, especially of wooden buildings. Except the sophisticated procedures to determine the activation energy of materials, using e.g. the cone calorimeter, there are still in use the mathematical models, which often represent simplified procedures to determine them without any need to have such an expensive equipment. In the paper, there are described the particular procedures to determine the activation energy of the spontaneous ignition / flash point of the Norway spruce wood and Norway spruce Thermowood specimens tested. The specimens were represented by the prisms with dimensions of 20 × 20 × 10 mm. The calculation of the spontaneous ignition / flash point activation energy of the two types of specimens tested was carried out in accord ance to the analogy of the equation of Arrhenius for calculating the activation energy. Spontaneous ignition / flash ignition induction periods of the specimens, tested at various temperatures, were determined by the Setchkin Furnace test, in accordance to the STN ISO 871 standard. Finally, the resulting values of the spontaneous ignition / flash point activation energy for Norway spruce wood and Thermowood were compared. There was found that higher spontaneous ignition / flash point activation energy was n ecessary to be added to Norway spruce wood specimens and lower one to the Thermowood specimens. However, the differences in the activation energy values are not so much significant as expected . 463 -1
$1 001 sldk_un_cat*0092723 $1 011 $a 1336-3824 $1 200 1 $a Acta Facultatis Xylologiae Zvolen $e vedecký časopis Drevárskej fakulty $v Roč. 59, č. 2 (2017), s. 79-90 $1 210 $a Zvolen $c Technická univerzita vo Zvolene $d 2017 610 1-
$a indukčná perióda $9 sldk_un_auth*0035827 $X induction period 610 1-
$9 sldk_un_auth*h030917 $a smrek obyčajný $X Norway spruce $Y Picea abies L. Karst. 610 1-
$9 sldk_un_auth*h042409 $a termodrevo $X thermowood 610 1-
$a Arrheniova rovnica $9 sldk_un_auth*0047338 $X Arrhenius`s equation 610 1-
$a indukčná perióda $9 sldk_un_auth*0035827 $X induction period 675 $a 630*174.7 $v 2. stred. $z slo 675 $a 630*812.14 $v ODT $z cze 701 -1
$3 sldk_un_auth*p0050468 $a Zachar $b Martin $f 1981- $p TUZDFPO $4 070 $T Katedra protipožiarnej ochrany 701 -1
$3 sldk_un_auth*p0044627 $a Majlingová $b Andrea $f 1978- $p TUZDFPO $4 070 $T Katedra protipožiarnej ochrany 701 -1
$3 sldk_un_auth*0047335 $a Šišulák $b Stanislav $4 070 701 -1
$3 sldk_un_auth*0040194 $a Baksa $b Ján $4 070 801 -0
$a SK $b ZV001 $c 20171026 $g AACR2 856 4-
$u https://df.tuzvo.sk/sites/default/files/08-02-17_0_0_0_0_0_0.pdf
Počet záznamov: 1