Commercial Kitchen Exhaust Duct Sizing Chart

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Commercial kitchen exhaust duct sizing chart.

The information presented is applicable to new construction and in many instances retrofit construction. 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. Duct system sizes and airflow quick chart created date.

Sizing an upblast or exhaust fan. Minimum duct size of 4 recommended duct size of 6. Commercial and industrial ventilation can be expensive to install or update and finding the right type and size of fan will keep companies and industries in compliance with codes and regulations. Sizing and finding high quality low maintenance exhaust and air movement equipment can save money for agencies and business owners.

Note that not both exhaust fans are required for hood exhaust. A commercial restaurant kitchen grease exhaust type 1 vent hood is essentially comprised of three main components. 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. 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.

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. Ashrae tech nical committee 5 10 kitchen ventilation sponsored and provided project guidance for a recently completed research. View the kitchen exhaust duct sizing chart below to determine your ductwork diameter based on range hood cfm. Please fill out the following form and we will contact you soon.

The hood manufacturer dictates the volume of airflow. This design guide reviews the fundamentals of kitchen.