www.android-online.ru РазработчикиKevin Burandt

Приложения разработчика Kevin Burandt в Android Market

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Иконка для HVAC Buddy® Refrigerant Press 1.3

HVAC Buddy® Refrigerant Press (v. 1.3)

Kevin Burandt опубликовал приложение 2010-11-10
(обновлено 2013-05-07)

Refrigerant PT Chart

• 75 Refrigerants
• Pressure Units psig/inHg, kPag, kPa, psig, psia, atm, inHg, MPa, barg, bara
• Temp Units °F, °C, Kelvin

Temperature Tab
• 1 °F Temperature increments
• Bubble and Dew Pressures on same line

Pressure Tab
• 1 psi Pressure increments
• Bubble and Dew Temperatures on same line

Settings Tab
• Select Pressure Units
• Select Temperature Units
• Select Refrigerants
• Refrigerant Properties

Thank you for looking at HVAC Buddy products.  We do our best to make the best products possible to improve your productivity.  If you feel there is any way we can improve please use the contact email link or support link from within the app.

Other HVAC Buddy® Applications:
-------------------------
NEW!
HVAC Buddy® Load Calc - Improve accuracy when sizing equipment, demonstrate professionalism on the job, and add substance to your proposals by using our heat loss and heat gain calculation app.

HVAC Buddy® Load Calc (Apple) - Also available on iOS devices - iPhone, iPad

HVAC Buddy® - Refrigerant charging and diagnostics

HVAC Buddy® Duct Calc - Powerful tool with a simple to use real-time interface to help you choose optimal duct sizes.

US$4.99
Иконка для HVAC Buddy® Duct Calc 1.1

HVAC Buddy® Duct Calc (v. 1.1)

Kevin Burandt опубликовал приложение 2010-11-03
(обновлено 2013-04-11)

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:
-----------------------------------------
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.

Other HVAC Buddy Applications:
-------------------------
NEW!
HVAC Buddy® Load Calc - Improve accuracy when sizing equipment, demonstrate professionalism on the job, and add substance to your proposals by using our heat loss and heat gain calculation app.

HVAC Buddy® Load Calc (Apple) - Also available on iOS devices - iPhone, iPad

HVAC Buddy® - Refrigerant charging and diagnostics.

HVAC Buddy® Pressure Temperature - Traditional PT Chart with 71 Refrigerants in Metric or Imperial units

US$9.99
Иконка для HVAC Buddy® 1.6

HVAC Buddy® (v. 1.6)

Kevin Burandt опубликовал приложение 2010-10-15
(обновлено 2012-12-28)

Make your job easier with our handy refrigerant charging and diagnostic HVAC app - HVAC Buddy®. If you are servicing equipment the best way to begin diagnosis and determine the proper refrigerant charge is to use HVAC Buddy, a set of gauges, and a thermometer.

• Superheat for fixed capillary or Subcool forTXV/EXV systems
• Calculates targeted vs. actual Subcooling
• 73 refrigerants including R-22 (Freon), R-410A (Puron), R-404A, R-134A
• Airflow / Delta-T / TEET Calculation
• Diagnosis tab for leaks, overcharge, contaminants, etc.
• Email System Status Report
• Imperial (IP) or Metric (SI)
• Use Target Superheat and Subcool tables or enter manually
• Fast! Update values realtime with Temp and Press sliders
• User friendly with several pages of step by step instructions

if the early outdoor temperature is 75F and you charge the system to a “beer can cold” suction line your system is likely improperly charged.  Later in the afternoon high temperatures will increase head pressure and the resulting overcharge means a lower than desired superheat and wasted energy.  Not good!

Features:

Use HVAC Buddy to enter refrigerant, temperatures, and pressures.  The math is done for you to display Superheat or SubcoolingTarget, Actual, and Difference.  Use temperature and pressure sliders to see what happens in realtime when these values change.  HVAC Buddy contains generic charts for target Superheat and Subcool as well as pressure-temperature tables for 71 Refrigerants.  Temperature data for your pressure is displayed on the refrigerant row and changes can easily be viewed by moving the pressure slider.  Add or recover refrigerant to get the Actual value to within the displayed target Superheat or Subcool range.

Diagnosis tab - shows common causes for high and low superheat, subcooling.

Instructions - Several pages of detailed step by step instructions.

Imperial/Metric - View units in Fahrenheit/Celsius or psi/kPa.

Airflow - For cooling, compares a targeted difference across the coil vs. actual.  Also called Delta-T or Target Evaporator Exit Temperature (TEET). Sliders change values in realtime.

System Status Report - Use the email tab to create defaults for email addresses, subject, and System Status Report introductory text.  Tap the email button and these values are incorporated into a formatted page including all the parameters recorded in HVAC Buddy. Edit the email and / or add contacts.  Then on each service call it's just a couple taps to send a personalized report.

Note: To access Diagnostics, Email, and Instructions use your phones menu button.

This app does NOT have a traditional PT Chart display.  However, you can view temperatures in the upper left hand corner given any vapor line pressure (Superheat tab) or Liquid leaving pressure (Subcooling tab).

Accolades and Awards:
----------------------------
HVAC Buddy ranked #2 in ContractingBusiness.com readers choice of top 10 contracting apps August 2011.

HVAC Buddy was featured by the California Association of HERS Raters and is CalHERS approved!

http://calhers.org/

"Very cool app.  I can see California really running with this as we have strict requirements for verification." - John Richau, Executive Director, Calhers

"an excellent programme" - Charlie Richards

Other HVAC Buddy® Applications:
-------------------------
NEW!
HVAC Buddy® Load Calc - Improve accuracy when sizing equipment, demonstrate professionalism on the job, and add substance to your proposals by using our heat loss and heat gain calculation app.

HVAC Buddy® Load Calc (Apple) - Also available on iOS devices - iPhone, iPad


HVAC Buddy® Duct Calc - Powerful tool with a simple to use real-time interface to help you choose optimal duct sizes.

HVAC Buddy® Pressure Temperature - Traditional PT Chart with 71 Refrigerants in Metric or Imperial units.

US$9.99
Иконка для test app does nothing 1.3

test app does nothing (v. 1.3)

Kevin Burandt опубликовал приложение 2010-10-14
(обновлено 2010-10-14)

testing the market process

1.3
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