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In the "Range of Duct Sizes" mode, you can specify minimum and maximum friction loss and airflow values to display a range of duct sizes that fall in between the friction loss bounds. There are options to input the existing duct dimensions and one of either the airflow or velocity values to derive the calculated duct friction loss. In the "Size by Dimensions" mode, you can analyze an existing duct system.
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The results include both the exact and rounded height and width (or diameter) dimensions and the calculated velocity and friction loss. In the "Size by Airflow" mode, you can specify the total airflow in CFM (or L/s), the aspect ratio and one of either the velocity of air or the friction loss per 100 feet (30 meters). Think of this application as a digital version of the classic Trane Ductulator. The Duct Sizer application allows you to quickly size one HVAC duct run or a range of duct sizes using the constant friction method. "I'll be presenting your iPhone program to my HVAC class as an easy compact tool to have in hand when making sales and service calls." - R. Just a couple of comments from our users: This app includes the HVAC Equipment Locator. The HVAC Duct Sizer is a universal duct sizing app so that it works on both the iPhone and iPad and adjusts its screen size accordingly. Tens of thousands of happy users have downloaded this useful application for performing quick and simple duct sizing analysis. The HVAC Duct Sizer app is the #1 selling duct sizing application for the Apple iPhone and iPad. This app now includes the HVAC Equipment Locator.HVAC Duct Sizer voted favorite mobile app by readers of Contracting Business magazine. The app allows you to email inputs and results once you have completed an analysis. You can also manually input exact values. This application uses slider controls that allow you to quickly increment or decrement the input values and immediately observe the calculated results. This application includes built-in pipe fitting equivalent length and nominal pipe sizing tables for a wide variety of pipe material types and diameters. You can also choose to display values in either english or metric units. You can specify additional parameters such as the type of liquid, various properties of the liquid, the pipe material type, the total length of pipe, quantities for up to 11 different types of pipe fittings, and much more. If you are analyzing an existing pipe system, there is an option to input the existing pipe internal diameter and one of either unit head loss or fluid velocity parameters to derive the calculated fluid flow and other remaining properties. The results include both the exact and nominal pipe diameters and the calculated velocity and total head loss. You can specify the total fluid flow in GPM (or L/s) and one of either unit head loss (ft/100ft), pipe internal diameter (inches) or fluid velocity (ft/s) parameters. This app now includes the HVAC Equipment Locator. This app is a universal app that works on both the iPhone and iPad and adjusts its screen size accordingly. The "HVAC Pipe Sizer - Liquid" application allows you to quickly size a simple pipe system by inputting a number of piping and liquid properties, including hot and chilled water (hydronic).