Mixed Air Calculator

The Air Mixing Calculator from Adicot, Inc. is a powerful tool for engineers, designers, and HVAC professionals. This online calculator quickly and easily calculates the mixed air conditions.  With accurate calculations and an intuitive interface, the Air Mixing Calculator is a must-have for any HVAC professional looking to optimize indoor air quality in their building or facility.

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Instructions: 

1. Select English Units or Metric Units

2. Enter Outside Air Conditions, including: 

   • Air flow rate

   • Dry bulb Temperature​

   • Wet bulb Temperature

3. Enter Return Air Conditions, including:

   • Air flow rate

   • Dry bulb Temperature​

   • Wet bulb Temperature​

4. Optional: Enter a Third Air Stream (e.g., Air Flow from a Bypass Duct), including: 

   • Air flow rate

   • Dry bulb Temperature​

   • Wet bulb Temperature

5. Click the Calculate button

6. See the Mixed Air Results in the Results window

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Methodology:

TMA = T1 x Q1 + T2 x Q2 + T3 x Q3

               Q1 + Q2 + Q3

 

where: TMA = The dry bulb or wet bulb Mixed

Air Temperature oF [oC]

T# = The dry bulb or wet bulb temperature of each

airstream oF [oC]

Q# = The flow rate of each airstream, CFM [l/s]