Hvac Rectangular Duct Calculator

Read duct diameter inches and duct velocity fpm.

Hvac rectangular duct calculator. Convert rectangular duct to round equivalent. Enter round duct diameter. All product lines hvac residential hvac commercial hvac refrigeration foodservice parts supplies. Read friction loss inches of water and duct velocity fpm.

Air duct also termed as ductulator is a passage that is used to provide fresh air into rooms buildings etc air ducts may be in circular square and in rectangular shapes. Based on duct diameter. Read round duct diameter inches and friction loss per 100 of duct inches of water. 844 289 0033 after hours emergency contact.

Enter the desired length of the rectangular duct. It is particularly handy to provide the area in square feet of round duct as well. For rectangular ducts the equivalent diameter must be calculated. Duct and fittings have interconnecting ends that lock together with brackets.

Sheet metal duct friction loss calculator. Calculations are for 60 f dry air at sea level from 5 to 3000 cfm approximately standard air which is 0 075lb da ft. δh 0 109136 q 1 9 d e 5 02 1. If ashrae 2013 is selected flexible roughness is 0 003 ft when straight and fully stretched tight at 0 compression adjusted at other compressions otherwise the.

This calculator can be used to calculate the area in square feet when the height inches and width inches of rectangular duct is known. The major loss or friction loss in a circular duct in galvanized steel with turbulent flow can for imperial units be expressed. D e equivalent duct diameter inches. Convert diameter to rectangular equivalent.

Q air volume flow cfm cubic feet per minute. Sales ordering ordering sales centers sales team. δh friction or head loss inches water gauge 100 ft of duct. This online air duct calculator is used to calculate the velocity of air flow feet per minute fpm and feet per second fps through any shaped circle square or rectangle ductulator with either diameter sides or area.

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 duct size duct height net inside dimension in inches round duct size estimate. For technical drawings and 3 d models click on a part number. Rectangular duct is rounded up to the nearest 1 4 inch. Enter round duct diameter inches duct airflow cfm duct length and the number of bends.