HVAC Buddy® Duct Calc 1.3
Paid Version
Publisher Description
The best and number one selling duct sizing tool for Android devices with thousands of happy users. For less than the cost of a cardboard wheel ductulator always have a fast, accurate way to analyze ducts for design (by Airflow) or existing installations (by Size).
Airflow Tab
• Calc decimal & rounded sizes for any aspect ratio
• Solve for Volume, Aspect Ratio, Friction, or Velocity
Size Tab
• Calc Friction and Velocity given duct size
Settings Tab:
• Enter various units - Airflow (cfm, m3/s, l/s, m3/hr) Friction (in/100', Pa/30m), Duct Sizing (in, cm), Velocity (ft/min, m/s)
• Define standard air - Altitude (ft, meter), Temperature (Fahrenheit, Celsius), Relative Humidity (pct)
• Displays calculated Kinematic Viscosity (ft2/s) and Specific Volume (ft3/lb)
Material Types:
• PVC
• Aluminum
• Galvanized Steel
• Spiral Steel
• Smooth Liner
• Fiber Liner
• Flex Duct
Duct Shapes:
• Round
• Rectangular
• Oval
Duct Sizing
• Round to Even Units
• Round to Odd Units
Calculations are based on friction loss equations in the ASHRAE Handbook of Fundamentals 2009.
Review Notes
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A 12x12 duct matches FPM and CFM when friction is ignored which does not happen in real life. This relationship changes based on the properties of air (see kinematic viscosity on the settings tab) and on the friction value determined via the type of duct selected. Also, for the times when you want to get friction given CFM and Duct use the "Airflow" tab, select the "ft/min" checkbox and move the slider accordingly. There are many ways to drive the open variable.
Accuracy:
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Calculations have been verified against ASHRAE fundamentals and several other references. There are more input criteria (such as duct material) than velocity, friction, and size mentioned in the review which the reviewer may not have taken into consideration. Use the Support email link for any questions or concerns.
About Powertrade
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Powertrade is the number one developer of mobile HVAC apps with professional looking, proven apps in the hands of over 20,000 users worldwide.
Powertrade HVAC Buddy® Applications:
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About HVAC Buddy® Duct Calc
HVAC Buddy® Duct Calc is a paid app for Android published in the Office Suites & Tools list of apps, part of Business.
The company that develops HVAC Buddy® Duct Calc is Powertrade Services LLC. The latest version released by its developer is 1.3. This app was rated by 2 users of our site and has an average rating of 3.5.
To install HVAC Buddy® Duct Calc on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2013-03-15 and was downloaded 174 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the HVAC Buddy® Duct Calc as malware as malware if the download link to com.gridbuddy.dbuddy is broken.
How to install HVAC Buddy® Duct Calc on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the HVAC Buddy® Duct Calc is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by HVAC Buddy® Duct Calc will be shown. Click on Accept to continue the process.
- HVAC Buddy® Duct Calc will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
