Examples
Examples
Try the starting example
- Outside air temperature (°C)
- 10
- Return air temperature (°C)
- 24
- Target mixed air temperature (°C)
- 18
- Required outside-air fraction (%)
- 42.857143
- Return-air fraction (%)
- 57.142857
Try another scenario
- Outside air temperature (°C)
- 11
- Return air temperature (°C)
- 24
- Target mixed air temperature (°C)
- 18
- Required outside-air fraction (%)
- 46.153846
- Return-air fraction (%)
- 53.846154
Calculation method
Calculation method
Required outside-air fraction (%)
Dry sensible mixing at equal specific heat; outdoor fraction=(return−mixed)/(return−outside).
Return-air fraction (%)
Dry sensible mixing at equal specific heat; outdoor fraction=(return−mixed)/(return−outside).
Symbols and units
- a
- Outside air temperature (°C)
- b
- Return air temperature (°C)
- c
- Target mixed air temperature (°C)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- User-supplied measurements and assumptions; Dry sensible mixing at equal specific heat; outdoor fraction=(return−mixed)/(return−outside). Supported limits: Finite numeric values bounded to 1e9 magnitude; lists and tables contain 1–100 records unless a stricter bound is stated. Inputs use the units shown. Lists explicitly paired by a method must have matching lengths; independent polynomial coefficient vectors may differ. Respect stated physical, interpolation, policy and computational domain limits.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.