Commercial Kitchen Exhaust Duct Sizing

Read on to determine how to size your exhaust and supply fans.

Commercial kitchen exhaust duct sizing.

Minimum duct size of 7 recommended duct size of 8 10. This design guide reviews the fundamentals of kitchen. Are you interested in representing captiveaire and selling our products. Minimum duct size of 6 recommended duct size of 8.

Essentially 10 feet of open flame wok cookers will need significantly more exhaust than the standard equipment of a range griddle fryer etc. Note that not both exhaust fans are required for hood exhaust. Ashrae tech nical committee 5 10 kitchen ventilation sponsored and provided project guidance for a recently completed research. 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.

Minimum duct size of 4 recommended duct size of 6. 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. The information presented is applicable to new construction and in many instances retrofit construction. 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.

Sizes of ducts are then given by the continuity equation like. A duct cross sectional area m 2 q air flow rate m 3 s v air speed m s alternatively in imperial units. Please fill out the following form and we will contact you soon. 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.

A q v 1 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. 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. A i 144 q i v i 1b where.