CASE78 · Manufacturing · Condenser-water pump performance
Finding underperforming condenser-water pumps with flow-normalized electricity
Semiconductor/display utility data compare individual pumps and running states. Electricity, delivered flow and hydraulic duty are combined to identify a weaker operating choice.
01 · CASE ANALYSIS
Use the correct project context
The source describes semiconductor/display manufacturing utilities, including the 5°C and 13°C cooling-water-system labels used in the original records.
Compare individual pump power, operating state, utilization and delivered flow rather than selecting the smallest kW in isolation.
02 · CASE ANALYSIS
Define the performance metric
Flow yield is delivered flow in m³/h divided by power in kW, giving m³/kWh. A higher yield indicates more delivered flow per unit electricity under comparable duty.
Its reciprocal, kWh/m³, is an intensity for which lower is better. Keep the direction explicit in tables and dashboards.
| Metric | Unit / interpretation |
|---|---|
| Flow / power | m³/kWh; higher is better at matched duty |
| Power / flow | kWh/m³; lower is better at matched duty |
| Source power estimate | A × 6.6 kV × 0.85 × √3 → kW |
| Pump count / load | Compare actual flow with service requirement |
03 · CASE ANALYSIS
Qualify the power estimate
The source calculates power as current × 6.6 × 0.85 × √3, using 6.6 kV and assumed power factor 0.85. With current in amperes this gives kW.
That calculation is an estimate, not direct measured real power. Confirm voltage, power factor, meter quality and timestamps before drawing small efficiency differences.
04 · CASE ANALYSIS
Compare pumps at required hydraulic duty
Match flow, head, valve state and cooling demand; inspect wear, fouling, air, speed and instrument quality when a unit appears weaker.
Required pump count must account for actual system flow and operating constraints rather than simply adding rated capacities. No isolated final saving is reported for this CASE.
| Check | Reason |
|---|---|
| Flow and head | Equivalent delivered service |
| Voltage / power factor | Reliability of estimated kW |
| Valve / speed / pump condition | Possible operating causes |
| Load and redundancy | Feasible dispatch |
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