Commercial Kitchen Hood Fan Sizing

The perforated supply plenum psp introduces make up air near to the hood and directs the air downward to the capture area of the hood.

Commercial kitchen hood fan sizing. Select hood type and style. Select and size makeup air system s. The dual plenum ac psp design adds an additional plenum to allow for convenient termination of ac ductwork to the kitchen and provide spot cooling. The hood factor 3 the design process 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.

Minimum duct size of 6 recommended duct size of 8 601 900 cfm. To determine the correct size grease range hood system to install national fire code nfc dictates that the hood should be 6 inches larger on all sides compared to all of the equipment that is under it. Minimum duct size of 7 recommended duct size of 8 10 901 1200 cfm. The basic rule of thumb when determining the fan size of a range hood is that it should move a minimum of 100 cfm of air for every 12 of stove width.

To learn more about selecting a commercial kitchen vent hood read this article. Static pressure usually ranges from 625 to 1 0 for 1 story buildings. Minimum duct size of 8 recommended duct size of 10 12 1200 cfm. Size your range hood based on the heat output of your range.

The recommendation by the home ventilating institute hvi is to divide the btu rating of your stove by 100 to arrive at a minimum guideline for cfm rating. So if you have a 30 wide stove you would need a range hood with a fan that moves at least 250 cfm of air. The first guideline for sizing a range hood depends on the output of your range as measured in british thermal units btus. Focus on hood selection sizing 1.

Specify exhaust airflow rate and select fan per system pressure drop. 2 of hood area for wall style hoods. 5 essential tips for choosing a commercial kitchen exhaust hood. Minimum 10 diameter duct recommended duct size of 12 range hood duct length.

Y distance between table and exhaust hood m c circumference of the hood m 1 can be modified to calculate air volume flow. Establish position and duty classifications of appliances. Range hood fan size. Required air volume flow for a exhaust hood with circumference 3 m located 1 2 m above a stove can be calculated as.

I know commercial kitchen ventilation regulations require a vent hood with fire suppression over cooking. Please consult your local building code office to see if they require more overhang. Note some local codes require 100 cfm ft. Sizing a grease hood and heat condensate hood.

2 5 wide stove x 100 250 cfm minimum range hood fan size.