NACA-RM-E52H15

Pressure limits of flame propagation of pure hydrocarbon-air mixtures at reduced pressure

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T15:10:32Z
date available	2017-09-04T15:10:32Z
date copyright	01/01/1952
date issued	1952
identifier other	LRONEEAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/8842
description abstract	The flammability limits of 18 high-boiling hydrocarbons at reduced pressures were studied in a closed flame tube with hot-wire ignition. Characteristic two-lobe flammability-limit curves were exhibited by all the hydrocarbons studied. The minimum pressure limit was not affected by the molecular weight. The rich limit, the lean limit, and the flammability range, when expressed as volume percent fuel, decreased as the number of carbon atoms increased. However, if the concentration of fuel is expressed as percent stoichiometric, the lean limit of the n-alkanes and n-alkenes attains a maximum value near a molecular weight of 75. Likewise the rich limit of the same two series attains a maximum near a molecular weight of 100. The flammability range, when expressed as volume percent fuel in the mixture, correlated with the molecular weight raised to the -0.70 power. The rich Limit correlated with the lean limit raised to the 0.56 power.
language	English
title	NACA-RM-E52H15	num
title	Pressure limits of flame propagation of pure hydrocarbon-air mixtures at reduced pressure	en
type	standard
page	37
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1952
contenttype	fulltext