That's very cool lol But definitely this is one for me to remember when the next project comes up.
And it not varying more than 1 degree even in front of the blowers? Definitely interesting and as I said something to remember for the future. Thanks Ron! On Jul 12, 2013, at 11:33 PM, [email protected] wrote: > We did a 40,000 sqft 36F beer cooler with a 44 ft high ceiling and used wet > ESFR's. The AHJ (Phoenix) was concerned about freezing so after the cooler > was up and running we put in a half dozen temperature recorders some in front > of blowers, some 20 ft above the floor, 6 ft off the floor at ceiling, well > you get the idea. After a week of recording temps every 5 minutes the results > were pretty amazing. Nothing varied more than 1 degree, usually less than .5. > > Ron F > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of ampeck > Sent: Friday, July 12, 2013 9:26 AM > To: [email protected] > Subject: Re: dry pnds off dry system > > Ron that is kinda interesting, making me think. > > Of course cold air falls and hot air rises so unless a sprinkler line is > close, depending on many factors, to the units the air is always going to be > warmer at the roof where the sprinkler pipe is at. I think most everyone(the > sales guys I've dealt with), just to err on the side of safety, says if it > says <40 you put in a dry or preaction system or use dry pendents is a small > cooler. I would assume if a cooler was 34F the unit has to be of producing > colder than 34F to maintain it. Depends of the BTU output and the placement > of piping in relation to the unit I would assume. > > But most of my experience has been with large warehouses. And as far as BTU > output it can take a long time to bring those coolers, mine have being > larger, down to temperature. Like a week or so, but I don't know really > what's all involved in starting those system and the process. > > I have to look this up but what can cause ice build up faster, with the > temperature hovering around freezing. Water filled pipe or dry system with > humidity in the air. > I would say humidity in the air from a air dryer not working correctly is > worse. But I haven't thought about it until now. In water filled pipe the > unit has to bring the temperature of the surrounding water down enough to > freeze. > > Nothing new to add just wanted to say your email just sparked my curiosity > about this. > > Aaron P > > On Jul 12, 2013, at 10:58 PM, [email protected] wrote: > >> How many coolers can be turned into freezers using the same refrigeration >> equipment? The refrigeration units in coolers don't usually have the BTU >> capacity to bring the temp down to 28F and keep it there. We have installed >> hundreds of wet systems in 34F/35F coolers and have never had a freeze up. >> 13 says that it has to be below 40f "and" subject to freezing, it doesn't >> say "or" subject to freezing. >> >> Ron F >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Matt >> Grise >> Sent: Friday, July 12, 2013 8:39 AM >> To: [email protected] >> Subject: RE: dry pnds off dry system >> >> I would be careful using a wet system even if it is called a "cooler". The >> evaporation coils can blow out air that is below freezing in order to get >> the whole cooler down to its target temp. >> >> Also- just because they say they will keep it at 41 does not mean that they >> won't change their mind after it has been installed and dial it down. >> >> Matt Grisé PE*, LEED AP, NICET II >> Sales Engineer >> Alliance Fire Protection >> 130 w 9th Ave. >> North Kansas City, MO 64116 >> >> *Licensed in KS & MO >> >> 913.888.0647 ph >> 913.888.0618 f >> 913.927.0222 cell >> www. AFPsprink.com >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of >> Martinez, Dewayne >> Sent: Friday, July 12, 2013 10:34 AM >> To: [email protected] >> Subject: RE: dry pnds off dry system >> >> The building footprint is 3800sf so I could eliminate a control valve and a >> main by staying all dry. >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of >> [email protected] >> Sent: Friday, July 12, 2013 10:12 AM >> To: [email protected] >> Subject: RE: dry pnds off dry system >> >> If it's a "cooler" and not subject to freezing you can put a wet system in >> it. >> >> Ron F >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of >> Martinez, Dewayne >> Sent: Friday, July 12, 2013 8:15 AM >> To: [email protected] >> Subject: dry pnds off dry system >> >> I have a small building which has both unheated / heated spaces. I am going >> to run the entire building as a dry system with standard pnd heads on return >> bends in the heated areas with ceilings. There is a cooler in the heated >> area that will need sprinkler protection in. Can I still put standard pnds >> on return bends (in the heated area) for the cooler or do I need to drop dry >> pnds? >> >> Thanks, >> >> Dewayne >> >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler >> .org >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler >> .org >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
