wet to anti freeze
wet to anti freeze
(OP)
A business wants to change from a wet system to anti freeze.
as ahj I understand the system requirements
BUT does the system have to be recalculated??? becuase of the anti freeze use??
as ahj I understand the system requirements
BUT does the system have to be recalculated??? becuase of the anti freeze use??





RE: wet to anti freeze
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: wet to anti freeze
Size of pipe not correct to support the pressure needed???
Other????
RE: wet to anti freeze
I worked with a designer once who took pride in getting his sprinkler systems as close to the water supply curve as he possibly could to minimise the cost. Hopefully he didn't design this one.
RE: wet to anti freeze
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RE: wet to anti freeze
Basically, the equation is going to allow for the viscosity of the antifreeze based on your lowest expected temperature - if it gets real cold there, the liquid is going to be very thick, and not have the same hydraulic properties as water, so you're going to (possibly) see the pressure demand skyrocket.
Long story short, yeah they're going to have to re-calc, but make sure they calc right. The moody diagram is easy to flub if you're not looking real close at it.
RE: wet to anti freeze
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: wet to anti freeze
RE: wet to anti freeze
This is somewhat of a moot point if you're installing systems where the design temperature is less than NFPA's TIA allows for pre-mixed solutions.
RE: wet to anti freeze
Do not have the book
But not required when you do a loop, because the check has a hole in the flapper
RE: wet to anti freeze