Mixed Air Calculator
Mix two air streams to get resulting temperature and humidity ratio.
How to Use This Calculator
Enter dry air mass flow, temperature, and humidity ratio for two streams. The calculator outputs mixed temperature and humidity ratio by mass balance.
Formula
Tm = (m₁T₁ + m₂T₂) / (m₁ + m₂)
Wm = (m₁W₁ + m₂W₂) / (m₁ + m₂)
About Mixed Air
HVAC systems mix outdoor and return air. This simplified model uses dry-air mass balance and ignores latent heat/enthalpy detail.
Frequently Asked Questions
What about enthalpy?
For higher accuracy, use enthalpy-weighted mixing on a psychrometric chart; this tool is a simple approximation.
Are units important?
Yes, keep mass flow in the same units for both streams; temperatures in °C; W in kg/kg dry air.