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| rhoAIR: air density + air properties calculator |
rhoAIR is a state point psychrometric air properties calculator to find air density, vapour pressure, dew point temperature, moisture content, enthalpy, etc. It is specially designed by a professional engineer to replace the psychrometric chart. rhoAIR will change the way you normally find air properties and air density by using conventional psychrometric chart.
Aim: creating a mobile design environment (ShowMe!) for the practising engineers & designers in today's mobile world.
Results: Instant solutions at your fingertips.
Highlights:
- calculate Air Density, DewPoint Temperature, various Vapour Pressure, Moisture Content, Specific Volume, Enthalpy, etc - given Temperature & RH (or WB).
- calculate RH - given Drybulb & Wetbulb Temperature.
- calculation formulation to ASHRAE guidelines.
- alternative method to using conventional Psychrometric Chart.
- mobile & independent program for Pocket PC & PC.
- in SI units (only for free edition).
| Did you know? . . .about Enthalpy Units |
It is incorrect to directly convert Enthalpy from SI unit (kJ/kg) to IP unit (Btu/lb), and vice versa. Hard to believe! Test it yourself.
At 23 oC and 60% RH, find air density, dewpoint temperature, moisture content, enthalphy, etc?
<input> Altitude = 0 m Temperature (DB) = 23 oC RH = 60 % <results> Air density = 1.184 kg/m3 Dewpoint temperature = 14.85 oC Detail results ....
(1) Atmospheric pressure = 101,325.0 Pa
(2) Saturation vapour pressure = 2,810.4 Pa
(3) Partial water vapour pressure = 1,686.3 Pa
(4) Partial dry air pressure = 99,638.7 Pa
(5) Humidity ratio (Moisture content) = 10.5263 g(water)/kg(dry air)
(6) Specific volume = 0.8532 m3/kg(dry air)
(7) Enthalpy = 49.901 kJ/kg |
rhoAIR is not designed to calculate mixing air psychrometric properties. See comparison below.
| calculation | rhoAIR [free] |  Qcondensate [USD 9.90] |
| State point psychrometric air properties | yes | yes |
| Air mixing psychrometric air properties | no | yes |
| AHU coil condensate flowrate | no | yes |
free
Price : free download (any Donation is appreciated)
OS requirements: Windows Mobile, Windows.
Note:
(1) If you need both SI & IP units, you will have to buy 
Ductulator+
(2) For Coil condensate and Air mixing calculations, see Qcondensate.
For product sales, see buy now. For product enquiry, email me.