Oh and as far as determining the size of the ventilation opening. After you have found your CFM you should be able to use the equation
Q= 2610 x A x squareroot (delta P) Or I guess, rearranged for the area you are looking for is A= (Q/(2610 x squareroot(delta P))) The variables are: Q= to your CFM 2610 is the coefficient A= the free area of your ventilation opening... Taking into account the louvers and possibly bird screen. Feet Squared. Delta P = your pressure drop across the opening. NFPA 20 11.3.2.3.2 says this will be no more than 0.2 inch water column. Justin Reid Sent from my iPhone On Aug 23, 2012, at 6:28 PM, "David Bitton" <[email protected]> wrote: > Where I can find guidelines for determining the size of the ventilation > openings in a pump room containing a diesel-engine driven pump? I imagine > that the size would depend on the room size (volume) and the size of engine. > > > > > David Bitton, ing. > > Quest Loss Control Services Inc. > > Les services de prévention des sinistres Quest inc. > > 5100, rue de la Savane, bureau 200 > > Montréal, QC H4P 1T8 > > (514) 341-4545 > > www.questlosscontrol.com > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120823/efe19989/attachment.html> > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
