Commercial Kitchen Exhaust Duct Sizing

Note that not both exhaust fans are required for hood exhaust.

Commercial kitchen exhaust duct sizing.

A i 144 q i v i 1b where. As an example we can use the previously mentioned set up referenced in the sizing a hood section the 12 hood with the equipment listed would need an average of 4000 cfm. Read on to determine how to size your exhaust and supply fans. The information presented is applicable to new construction and in many instances retrofit construction.

Selecting sizing exhaust hoods is the first design guide in a series that will help you achieve optimum performance and energy efficiency in your commercial kitchen ventilation system. Minimum duct size of 7 recommended duct size of 8 10. Flex duct 05 on most metal duct calculator round metal pipe 06 on most metal duct calculators field duct sizing chart rectangular sheet metal duct 07 on most metal duct calculators. Kitchen exhaust grease duct.

The illustration above shows a typical commercial kitchen application utilizing a roof mount upblast exhaust fan or wall mount upblast exhaust fan in conjunction with a supply fan. Minimum duct size of 6 recommended duct size of 8. This design guide reviews the fundamentals of kitchen. Please fill out the following form and we will contact you soon.

A grease duct is a duct that is connected to the kitchen exhaust hood and is specifically designed to vent grease smoke and other harmful contaminants from commercial cooking equipment to the outside of a building. A duct cross sectional area sq in. A q v 1 where. A duct cross sectional area m 2 q air flow rate m 3 s v air speed m s alternatively in imperial units.

Are you interested in representing captiveaire and selling our products. View the kitchen exhaust duct sizing chart below to determine your ductwork diameter based on range hood cfm. Sizes of ducts are then given by the continuity equation like. Ommercial kitchen design professionals were concerned that the minimum exhaust air ductwork velocity of 1 500 fpm 7 62 m s as required by the national fire protection association nfpa 96 1 was too restrictive.