A place to ask questions and add to probative and informative discussions associated with the various aspects of the field of fire investigation. -- FORUM RULES---BE CIVIL AND NO NAME CALLING, NO BELITTLING, NO BERATING, NO DENIGRATING others. Postings in violation of these rules can be removed or editted to remove the offending remarks at the discretion of the moderators and/or site administrator.
Re: Vapor Density
Posted by:
dcarpenter (IP Logged)
Date: July 27, 2006 09:56AM
Jim,
Are you saying these are technically correct or just the way you understand how these definitions are used within the fire investigation community?
Doug
jgmcfps Wrote:
-------------------------------------------------------
> In the simplest of approaches (from a fire
> investigators approach):
>
> Specific gravity compares the weight of a certain
> liquid to water with water being given a value of
> 1. Less than 1 it floats on water, greater than 1
> it sinks.
>
> Vapor density compares the weight of a gas/vapor
> to dry air which is given the value of 1. Less
> than 1 it rises, greater than 1 it sinks.
Douglas J. Carpenter, MScFPE, CFEI, PE, FSFPE
Vice President & Principal Engineer
Combustion Science & Engineering, Inc.
8940 Old Annapolis Road, Suite L
Columbia, MD 21045
(410) 884-3266
(410) 884-3267 (fax)
www.csefire.com