Examples
Examples
Try the starting example
- Original speed (rpm)
- 1500
- New speed (rpm)
- 1200
- Original flow (m³/hour)
- 20
- Original head (m)
- 30
- Original input power (kW)
- 4
- Scaled flow (m³/hour)
- 16
- Scaled head (m)
- 19.2
- Scaled power (kW)
- 2.048
Try another scenario
- Original speed (rpm)
- 1650.0000000000002
- New speed (rpm)
- 1200
- Original flow (m³/hour)
- 20
- Original head (m)
- 30
- Original input power (kW)
- 4
- Scaled flow (m³/hour)
- 14.545455
- Scaled head (m)
- 15.867769
- Scaled power (kW)
- 1.538693
Calculation method
Calculation method
Scaled flow (m³/hour)
Same impeller: Q∝speed, H∝speed², P∝speed³.
Scaled head (m)
Same impeller: Q∝speed, H∝speed², P∝speed³.
Scaled power (kW)
Same impeller: Q∝speed, H∝speed², P∝speed³.
Symbols and units
- a
- Original speed (rpm)
- b
- New speed (rpm)
- c
- Original flow (m³/hour)
- d
- Original head (m)
- e
- Original input 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
- Ideal affinity scaling, similar efficiency; no guarantee of actual operating point. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Ideal affinity scaling, similar efficiency; no guarantee of actual operating point.
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.