Maybe I should have said "much" instead of "most", my point was simply that 
evaporative cooling of the fire area is a physical function of the 
extinguishment process. And your point is well made that pre-wetting is a 
significant part of the control function. Where in the world is Scot Deal these 
days?
Mark at Aero

----- Original Message -----
From: å... .... [mailto:[email protected]]
Sent: Tuesday, May 29, 2012 01:06 AM
To: [email protected] <[email protected]>
Subject: Factory Mutual Data Sheet 2.0 - Sprinkler Orientation and Spacing - 
sprinkler control mode

Pre-wetting is only a marginalized part of sprinkler control?
Less than half of a sprinkler's water hits the floor as liquid?


scot deal
excelsior fire



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.
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