Effect of initial temperature on the explosion pressure of various liquid fuels and their blends

Marcin Grabarczyk , Andrzej Teodorczyk , V. Di Sarli , A. Di Benedetto

Abstract

In this work, the effect of initial temperature on the explosion pressure, Pex, of various liquid fuels (isooctane, toluene and methanol) and their blends (isooctane-toluene and methanol-toluene, with three different fuel-fuel ratios) was investigated by performing experiments in a 20-l sphere at different concentrations of vaporized fuel in air. The initial temperature was varied from 333 K to 413 K. Results show that, as the fuel-air equivalence ratio, Φ, is increased, a transition occurs from a “thermodynamics-driven” explosion regime to a “radiant heat losses-driven” explosion regime. The maximum pressure, Pmax, is found in the former regime (Φ < 3), which is characterized by a trend of decreasing Pex with increasing initial temperature. This trend has been explained by thermodynamics. In the latter regime (Φ > 3), Pex increases with increasing initial temperature. This trend has been addressed to the decrease in emissivity (and, thus, radiant heat losses) with the increase in temperature
Author Marcin Grabarczyk ITC
Marcin Grabarczyk,,
- The Institute of Heat Engineering
, Andrzej Teodorczyk ITC
Andrzej Teodorczyk,,
- The Institute of Heat Engineering
, V. Di Sarli
V. Di Sarli,,
-
, A. Di Benedetto
A. Di Benedetto,,
-
Journal seriesJournal of Loss Prevention in the Process Industries, ISSN 0950-4230
Issue year2016
Vol44
Nobrak
Pages775-779
Publication size in sheets0.5
Keywords in Polishpaliwa ciekłe, temperatura początkowa, kula 20 l, granice wybuchowości, termodynamika, radiacyjne straty ciepła
Keywords in EnglishLiquid fuels; Initial temperature; 20-l Sphere; Explosion regimes; Thermodynamics; Radiant heat losses
Abstract in Polishbrak
DOIDOI:10.1016/j.jlp.2016.08.013
URL http://dx.doi.org/10.1016/j.jlp.2016.08.013
Languageen angielski
Score (nominal)25
ScoreMinisterial score = 25.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 25.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 1.818 (2) - 2016=1.932 (5)
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