Technical Information product application guide - …

product application guide A Technical bulletin for engineers, contractors and students in the air movement and control Box 410 Schofield, WI 54476 Fax 2002 Greenheck Fan Corp. Suggested Air Changes for Good VentilationThe most common methodused to calculate cfmrequirements for a given fanor fans is based on completechanges of air in a structure orroom in a given time determine the cfm requiredto adequately ventilate anarea, divide the room volume(in cubic ft.) by theappropriate "Minutes per AirChange" as shown in the considerationswhen determining the numberof air changes are: Local code requirements onair changes Specific use of the space The type of climate in theareaIn the most severe conditionsselect the lower number (inthe series shown) to changethe air more moderate conditions,select the mid range. For lesssevere conditions in coolclimates, the higher numberwill provide Halls3 - 10 Attic2 - 4 Auditoriums4 - 15 Bakeries1 - 3 Banks3 - 10 Banquet Halls3 - 4 Bar/Lounge2 - 5 Barns10 - 15 Beauty Parlors2 - 5 Boiler Rooms2 - 5 Bowling Alleys2 - 8 Cafeteria3 - 5 Church4 - 10 Schools/Classroom4 - 6 Club Room3 - 7 Corridors/Halls6 - 20 Dairies, Creameries2 - 5 Dance Hall3 - 7 Dining Rooms3 - 6 Dormitories5 - 8 Dry Cleaners2 - 5 Engine Rooms1 - 2 Factories (Light)5 - 10 Factories (Heavy)2 - 6 Fo

product application guide ® A technical bulletin for engineers, contractors and students in the air movement and control industry. Technical Information

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