Hvac Duct Weight Calculator Free

And if you use autodesk building systems to create hvac drawings duct calculator can be used to automatically analyze and size your duct systems.

Hvac duct weight calculator free.

The spreadsheet is for duct sheet metal quantity estimation. An easy to use hvac tool for calculating necessary thermal output capacity in btus this tool is based on the square foot method with computations added for the most important values included such as insulation windows and other contributing factors. Ashrae handbook 2009 fundamentals chapter 32 duct design formulas 19 20 22 23 through 28 and table 1. A round duct with a cross sectional area of 0 6m2 has a perimeter of 2 75m a rectangular duct with an equal cross sectional area has a perimeter of 3 87m the rectangular duct therefore requires more metal for its construction this adds more weight and costs to the design.

Acca manuals rs j s d t b air conditioning contractors of america washington dc. I work for a cost consultant and recently came upon a rather interesting and indeed tricky situation. This excel sheet is for hvac duct measurement like duct weight duct area and all calculation related to ductwork like hanger supports and duct insulation. When the quantity take off is completed take 10 extra of duct this will resolve the quantity assumption.

The heat load estimate is based on your climate region total square footage number of rooms or zones you want ceiling height insulation type number of windows and doors. To calculate the rectangular duct area we need height width and length. The system is pre set to a 72 degree indoor temperature and a 95. Ashrae rp 1485 thermodynamic properties of real moist air dry air steam water and ice the american society of heating refrigerating and air conditioning engineers.

As an example for a 7 feet long galvanized duct of size 74 x54 i came up with a weight of 247 lbs. This hvac load calculator quickly estimates the size of your heating and cooling system in btu s. This hvac calculator is the closest estimate to the actual manual j calculation done by hvac pros. Hvac duct size calculator excel free ductulator.

I usually find that my estimate on the total duct weight is more conservative than the contractor s but in this instance it was the other way round. Download free autocad blocks for hvac design. Weight loss calculator is a free weight loss calculator.