Commercial Kitchen Exhaust Duct Sizing

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.

Commercial kitchen exhaust duct sizing.

Minimum duct size of 6 recommended duct size of 8. The information presented is applicable to new construction and in many instances retrofit construction. 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. Ashrae tech nical committee 5 10 kitchen ventilation sponsored and provided project guidance for a recently completed research.

A q v 1 where. View the kitchen exhaust duct sizing chart below to determine your ductwork diameter based on range hood cfm. This design guide reviews the fundamentals of kitchen. 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.

Please fill out the following form and we will contact you soon. Note that not both exhaust fans are required for hood exhaust. 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. A i 144 q i v i 1b where.

Minimum duct size of 7 recommended duct size of 8 10. 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. Kitchen exhaust grease duct. Minimum duct size of 4 recommended duct size of 6.

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