Examples
Examples
Try the starting example
- Original speed (rpm)
- 1000
- New speed (rpm)
- 1200
- Original flow (m³/s)
- 1
- Original pressure (Pa)
- 300
- Original shaft power (kW)
- 1
- New flow (m³/s)
- 1.2
- New pressure (Pa)
- 432
- New shaft power (kW)
- 1.728
Try another scenario
- Original speed (rpm)
- 1001
- New speed (rpm)
- 1200
- Original flow (m³/s)
- 1
- Original pressure (Pa)
- 300
- Original shaft power (kW)
- 1
- New flow (m³/s)
- 1.198801
- New pressure (Pa)
- 431.137294
- New shaft power (kW)
- 1.722826
Calculation method
Calculation method
New flow (m³/s)
Same fan and density: flow ∝ speed, pressure ∝ speed², power ∝ speed³.
New pressure (Pa)
Same fan and density: flow ∝ speed, pressure ∝ speed², power ∝ speed³.
New shaft power (kW)
Same fan and density: flow ∝ speed, pressure ∝ speed², power ∝ speed³.
Symbols and units
- a
- Original speed (rpm)
- b
- New speed (rpm)
- c
- Original flow (m³/s)
- d
- Original pressure (Pa)
- e
- Original shaft power (kW)
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; Same fan and density: flow ∝ speed, pressure ∝ speed², power ∝ speed³. 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.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.