HVAC Buddy® Duct Calc в Android Market

Icon for HVAC Buddy® Duct Calc 1.1 HVAC Buddy® Duct Calc (v. 1.1)
Разработано Kevin Burandt

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.

@Rick the reviewer:
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A 12x12 duct matches FPM and CFM when friction is ignored which cannot 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:
-----------------------------------------
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.

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US$9.99

Закачек: 1000-5000
Размер: 306.1 KB
Опубликовано: 2010-11-03
Обновлено: 2013-04-11

Официальный сайт:
Hvac-buddy.com/

Баркод для HVAC Buddy® Duct Calc
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Права доступа: 5 (показать/скрыть полный список)

Системное имя пакета: com.gridbuddy.dbuddy

Видео и снимки экрана

Снимок экрана hvac-buddy-duct-calc
 
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Комментарии и оценки пользователей для HVAC Buddy® Duct Calc

[2012-12-09] A Google User:
Like he said old school ductulators are steel duct. You old dogs need some new tricks. You've been calculating wrong for years. Old school ductlators are steel duct.
[2012-08-10] A Google User:
Not accurate Type in 12x12 duct and fpm should match cfm but it does not. Also no way to enter cfm and duct size to get resistance and fpm this app was obviously not made by an hvac professional
[2012-01-29] A Google User:
Inaccurate All the numbers I get are wrong compared to the old school paper ductulator maybe I'm using wrong but I'm positive 8in round will flow 150 cfm less than 500fpm
[2012-01-23] A Google User:
Useful Useful tool when I am air balancing
[2011-07-04] A Google User:
Great app on the go
[2011-04-01] A Google User:
All my numbers are cut off grrrr.. Plz help
[2011-04-01] James:
All my numbers are cut off grrrr.. Plz help
[2010-09-04] Joe:
Does what it says. Pretty simple. Slider could respond a little better
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