Accession Number : AD0697488

Title :   EXPANSION OF EXPLOSIVE MIXTURES,

Corporate Author : NAVAL SCIENTIFIC AND TECHNICAL INFORMATION CENTRE ORPINGTON (ENGLAND)

Personal Author(s) : Schoen,G.

Report Date : AUG 1969

Pagination or Media Count : 24

Abstract : Following the discussion of the characteristics of flammable fuel vapour/air mixtures, e.g. explosion limits and explosion points, as well as their correlation to the vapour pressure and boiling curves determining the production of explosive mixtures, the mixture propagation in tanks by diffusion, conditions necessary for the existence of convection flow and finally the turbulent mixing processes are described. From measurements of the mass flow and of concentrations of mixtures leaving the fuel tank, it is possible to determine the losses due to tank respiration and fuel transfer which occur during normal storage, together with transloading. Under usual operating conditions, the total losses amount to about 1.5 to 3% of the transloaded fuel. Finally the expansion of mixtures in the free atmosphere when the air is calm and its ground velocity small, and also the decrease of concentration in a free jet are discussed. (Author)

Descriptors :   (*FUELS, STORAGE), (*EXPLOSIVES, *VAPORS), DIFFUSION, CONVECTION(HEAT TRANSFER), TURBULENCE, VAPOR PRESSURE, FUEL TANKS, WEST GERMANY

Subject Categories : Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE