Of course! the thought never occurred to me. it is not just the volume
of liquid water that makes it to the fire- that is just a number that
gives the amount of heat it can absorb on the return trip to the
sprikler! Genius!
Quoting mphe...@aerofire.com:
Most of the delivered density is intended to "vaporize" high up in
the fire area to reduce the atmospheric temperature and prevent
flashover. In fact, the idea of extinguishment with "liquid" water
is a myth. It is the vaporization of the water that absorbs the heat
of combustion and cools the fuel below its kindling point.
Mark at Aero
----- Original Message -----
From: bcasterl...@fsc-inc.com [mailto:bcasterl...@fsc-inc.com]
Sent: Monday, May 28, 2012 11:26 AM
To: sprinklerforum@firesprinkler.org <sprinklerforum@firesprinkler.org>
Subject: Re: Factory Mutual Data Sheet 2.0 - Sprinkler Orientation
and Spacing
Is there a difference between abandoned and modified? What if the
13-23 tied Density to ceiling height and Area to occupancy? Even
without a fire, a .1 at the deflector is a .09 on the floor due to
some droplets evaporating by friction. The higher the ceiling, the
higher the amount of vaporization, therefore a lower Actual Delivered
Density of water in the liquid state on the fuel. Tieing Area to
occupancy gives it a kind of Quantity of Combustibles feel.
How much do I owe you Roland?
Quoting bcasterl...@fsc-inc.com:
I'll take it, based on the feeling that ten years from now 'green'
will have become 'greener still'.
Quoting Roland Huggins <rhugg...@firesprinkler.org>:
On May 25, 2012, at 3:49 AM, Damien Shannon wrote:
Any bets on whether any time in
the next decade or two that NFPA 13 will abandon the approach using
the density/area curves?
Roland
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