Hvac Duct Design Calculator

Below is a simple model for determining duct sizes.

Hvac duct design calculator.

Design cfm 4 cfm 6 cfm 8 cfm 10 cfm 12 60 6x4 60 4x6 90 4x8 120 4x10 150 4x12. Full worked example included with cfd simulations to optimise your design to ensure the highest energy efficiency. Duct sizing duct calculation duct design energy efficient ductwork design. Metal ductboard flex size by.

Hvac ductwork design hvac calculations performed by hvac professionals w over 120y. Refer to the links on the left for more information. Hvac how to size and design ducts. L the thickness of the wall in inches.

Convert rectangular duct to round equivalent. The model applies to system up to 60 feet from unit to register. Using an hvac duct sizing calculator. 9 greyridge farm court stony point ny 10980.

Because of the complexity of designing duct systems we highly recommend using the acca manual d for sizing ductwork or consulting a professional hvac contractor. Friction rate velocity friction rate. Your overall ducting size comes from combining the size cfm and friction loss of your home meaning it ends up being a pretty complicated calculation. Read round duct diameter inches and friction loss per 100 of duct inches of water.

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. Guide for how to design a ductwork system. Hvac calculations and duct sizing gary d. Because of this hvac professionals and amateurs alike typically don t calculate the final hvac ducting size by themselves.

Include fittings in the duct tel enter either. In wg duct tel. Enter duct airflow cfm duct velocity fpm duct length and the number of bends. Continuing education and development inc.

Q ka t1 t2 l btu hr eq 1 where.