Full-service supplier of air separation plants, oxygen and nitrogen generators and CO2 plants. Gas & liquid supplier to end users and to distributors of bulk liquids & packaged gases.

Converter

Toolbox

 
Converter

Toolbox

Psychrometric Calculator
Properties of Air

The properties of air vary from place to place, by time of year, and even hour by hour.  For many practical reasons, from human comfort to industrial process design, the ability to determine and modify the properties of air is important. 

 

This on-line psychrometric calculator makes air property determination simple. 

 

The calculator accepts entries in either IP (inch-pound, or "English" units) or SI (System International, or "Metric" units). 

 

The initial dispaly will be in IP units.   To calculate in SI units, use the "Switch to SI" button. 

 

Enter three input variables, one of which is either the elevation (altitude) for the site or known absolute pressure, plus two known or desired air property values. Use the dropdown menu for each line to select the desired set of input units of measure.

 

The output data set will update automatically.

  

Input Values  

Dry Bulb Temperature
Wet Bulb Temperature
% Relative Humidity
Enthalpy of Dry Air
Dew Point
Humidity as Weight Ratio

Altitude (feet or meters)
Pressure (inches or mm) of Mercury (Hg)
Pressure (psia or KPa)

Output Values      

Dry Bulb Temperature
Wet Bulb Temperature
% Relative Humidity
Enthalpy of Dry Air
Dew Point
Specific Volume of Dry Air
Vapor Pressure (Mercury - Hg)
PPM (weight)
PPM (volume)
Humidity as Weight Ratio

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PsyCalc is a psychrometric calculation applet created by the Linric Company.  It utilizes standard industry accepted equations and calculations. It is made available for use by visitors to this web site under license.

Linric Company produces a family of psychrometric analysis software products tailored for various user platforms, including PsycPro, the chart generation and process analysis software tool which was used to create the sea-level psychrometric charts which are available for download from this site.  I-P Chart   SI Chart

Universal Industrial Gases, Inc.
2200 Northwood Ave. Suite 3
Easton, Pennsylvania 18045-2239 USA

Phone (610) 559-7967 Fax (610) 515-0945

All material contained herein Copyright 2003 / 2015  UIG.