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Fan Laws

Fan Laws
  • #: 14194
  • Price: $4.99 In Apple Store
  • Category: Utilities
  • Updated: 2008-11-12
  • Current Version: 1.0
  • 1.0
  • Size: 0.30 MB
  • Language: English
  • Seller: Patrick Brennan
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 2.0 or later
  • © Patrick Brennan
  •  Add to Favorite apps

 

Description

This app was designed for:

Mechanical Engineers,

Testing and Balancing Technicians,

HVAC designers and Field Technicians,

Plant Mechanical Departments,

Building Managers and Mechanics,

Operating Engineers,

Students, or anyone else who has an interest in the effects of changing the speed of a fan in a fixed system.

Initial inputs are, motor rpm, fan sheave pitch diameter, fan rpm, motor horsepower, brake horsepower, static pressure, motor and fan shaft center-to-center distance, cfm, and fan critical shaft speed. Once they are entered using an intuitive calculator like keyboard, the iPhone is rotated to the landscape mode where the motor sheave pitch diameter is incremented or decremented, simultaneously yielding new values for brake horsepower, static pressure, fan rpm, belt pitch length, and cfm. There are warnings if the brake horsepower exceeds the motor horsepower, or if the fan RPM exceeds the critical shaft speed of the fan.

Fanlaws gives the user the ability to answer questions such as:

How much air can I get from this fan using the current motor?

Can I reduce the motor size for greater efficiency and still have the desired CFM?

What sheave size do I need to increase the air volume to X CFM?

What new belt size will I need? Will the static pressure be too great?

Fanlaws lets the user play - what if ? - all day long while visually watching multiple values change as the motor sheave size is incremented and decremented.

It is an essential tool for anyone designing or working on fan systems.

-Also-

consider getting

(Refrigerants PressTemp HVACR)

It's another great tool for the refrigeration tech.

For more information and a video tutorial visit http://www.fanlawsapp.com

Video Reviews

No video review.

Customer reviews

Write a Review

Rated 5/5 based on 3 customer reviews.

 

5/5 stars

Great app for T&B

:
22 years doing test and balance and I find this app very useful.
Thjnaks for putting it out there.

5/5 stars

Great App

:
Perfect, I work with fan systems all the time, this is a very handy resource. Thanks

5/5 stars

Very helpful tool!

:
After entering the inputs I can rotate my phone to landscape and see all the details. I was able to change my motor sheave pitch diameter to come up with the most efficient setup for my fan. The landscape mode and the warnings (shaft speed and horsepower) make this tool priceless. Thanks!

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The information may be outdated (2011-03-27 17:12:57). For actual information go to iTunes

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