Air Duct Calculator Online

Friction loss inches water duct airflow cfm duct length feet 90 bends quantity 45 bends.

Air duct calculator online.

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. Calculations are for 60 f dry air at sea level from 5 to 3000 cfm approximately standard air which is 0 075lb da ft. 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. Enter friction loss per 100 of duct inches of water duct airflow cfm duct length and the number of bends.

Ductulator calculats duct dimensions using equal friction method or velocity method. This hvac duct sizing calculator is very simple and it calculates the duct friction loss value and air velocity inside the duct. Include fittings in the duct tel enter either. Rectangular duct is rounded up to the nearest 1 4 inch.

Air change rate calculator air mixing condensate generated cooling load sanity check duct size calculator exhaust hood cfm fluid mixing calculator fpm to cfm converter psychrometric calculations vapor pressure deficit vpd window u shgc values default general calculators. In wg duct tel. Friction rate velocity friction rate. To use the calculator enter your air velocity or volume air flow and duct area type select your units click calculate air flow and your converted velocity and volume units will be shown.

Online ductulator free duct size calculator. Read duct diameter inches and duct velocity fpm. Air duct calculator flexible duct friction loss calculator. Cui devices air flow conversion calculator can be used to convert between common units for volume air flow and air velocity flowing past a point in a specified area of duct.

Metal ductboard flex size by. It works with i p units united states united kingdom and metric units canada europe russia middle east asia. And it shows the velocity and or static pressure loss of air for both types of duct shape. Bilinear interpolation break even calculator linear interpolation.

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 original method of constant 0 01 ft roughness is. Calculator of different ventilation parameters with which will be able to obtain the diameter the air speed the airflow and the dynamic pressure of your installation.