Psychrometric Calculator

Swastik Apps Solution

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About this app

This app is Psychrometric Air Property Calculator which is useful for Refrigeration and Air Conditioning Course.

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: [e-mail]
Website: www.swastikapps.rf.gd

Ratings and reviews

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.

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.

What's new

- UI enhanced.
- Dark theme.