Psychrometric Calculator
INTRODUCTION:
Welcome to Psychrometric Air Property Calculator. This app is Air property Calculator. You can get all air property by giving any two known property.
What is PSYCHROMETRY and PSYCHROMETRIC AIR PROPERTY?:
Mixture of air and water vapour is called Moist air. Properties of moist air is called Psychrometric Properties. A subject which deals with the behaviour of moist air is known as Psychrometry.
What this app does?:
In this app, you can calculate moist air properties based on some known properties.
PROPERTIES INCLUDED:
This app can calculate following air properties:
(1)Vapour Pressure
(2)Dry Bulb Temperature
(3)Wet Bulb Temperature
(4)Dew Point Temperature
(5)Specific Humidity
(6)Relative Humidity
(7)Degree of Saturation
(8)Enthalpy
(9)Specific Volume
How to use?:
Type known properties in text-boxes. You will get calculated properties. You can choose known property using drop-down menu. You can also change unit of property using drop-down menu.
SUPPORT:
If you like this app, Rate it on Play Store.Share this app with your Mechanical Engineering Friends.
CREDITS:
(1)All content and formulas are taken from:"Refrigeration and Air conditioning" by C.P.Arora.
(2)Saturation Temperature and Pressure Table is taken from:"Properties of Refrigerant and Psychrometric Tables and Charts" by Birla Publication.
DEVELOPER:
Ketan Chauhan
Mechanical Engineer.
Swastik Apps
From: Surat,Gujarat,India.
E-mail: [email protected]
Website: www.swastikapps.rf.gd
Category : Education
Reviews (27)
The values it output were wrong by a significant margin, especially enthalpy. I thought this would be a lazier way of doing some calcualtions for work, but in the end I had to make an excel spreadsheet that worked well for my puposes. I don't know how the app approximates saturated vapor pressure, but there seem to be many methods out there, all giving answers of variable accuracy. Perhaps a different method would yield better results?
Not sure how it calculates its values, but it doesn't come up with the right ones per the psychometric chart. Sitting in HVAC class right now comparing values and other apps. This one is off quite a ways. I do really like the format though.
I wish I could set the units and have them stay. The app defaults to Celsius when I need Fahrenheit and US units of measure. This is a very important feature that is missing.
I just want to plug in current dry bulb & RH, then a theoretical new dry bulb and calculate the new RH. IE, my house is 64 deg & 58% rh, what will the rh be if I turn the heat on and raise the temp to 70 deg w/o adding/removing moisture... it seems like every psychrometric calculator skips right over this simple calculation and goes right to the complex... thankfully I found a different one that will let me do that with a guess/check method...
My first impression is rather positiv! A straight forward, plain an simple piece of software.
Hmm. Did you use Carrier's Equations for calculations? I keep on getting value discrepancies in both values using gas laws and Carrier & chart reading. But thanks. It's a great app.
Does not save units nor is there an easy one click method to switch between IP and SI.
Nice App, helps my work to be very easy. improve it a bit so that it may have other features.
Needs a global setting for English units. If you switch to F its goes back to C the next time you enter app.
It has a large difference between thr ASHRAE psychometric chart No. 1 for enthalpy, otherwise everything matches up.
when i input pressure, wet bulb, dry bulb the relative hum. is not correct.
When inputting RH and DB it gives everything except the one thing it should WB!!
Very good app to know dry bulb and wet bulb temperature, easy to use
This is Good app its working ❤❤
Wish it would default to imperial units.
save last input settings (units eg. F) !!
Cant change from C to F in settings This is just stupid. Why?
Wonderful , thanks for such amazing app
I cant use it when the given is not DBT
I need to change to Fahrenheit every time you open it
Very much useful for moist air properties calculation just on click
The app is great and very aqurate and so helpful.
its great
Good but every time the screen rotates all the valuse are reset and have to re enter data. Else Good
Awesome. Simple and useful. Total pressure can be chosen
Incorrect results
The wet bulb temperature output is broken and doesn't display a temperature. I wish I could hit one button to change all units between SI/british units. Also it would be nice to be able to change two of the input parameters, rather than just the second. The Dry Bulb Temperature is not always a known parameter. Other than that, this app is pretty good.