CASE81 · Data centers · Cooling-tower performance diagnosis
Comparing cooling towers before selecting a temperature-control improvement
Tower performance and instrument consistency are examined separately from setpoint optimization. A poor apparent approach first triggers checks of load, weather, water distribution and fan state.
01 · CASE ANALYSIS
Separate equipment condition from setpoint choice
The source reviews weaker tower performance and seasonal temperature tests. Some other centers were awaiting consistent metering before comparison.
Temperature reset and repair of a weaker tower are different improvement questions and need different evidence.
02 · CASE ANALYSIS
Use matched conditions
Compare entering/leaving water temperatures, outdoor wet-bulb, heat load, water flow, active cells and fan speed. An approach difference at unequal duty does not establish equipment degradation.
Approach is leaving water minus wet-bulb; range is entering minus leaving water. Confirm sensor calibration and synchronized intervals first.
| Signal | Matched condition |
|---|---|
| Approach / range | Wet-bulb, load and water flow |
| Fan power / speed | Active cells and heat rejection |
| Sensor quality | Calibration and time alignment |
| Plant electricity | Chiller plus pumps and tower |
03 · CASE ANALYSIS
Investigate the weaker unit
Inspect fan operation, water distribution, fill/heat-transfer condition and operating overrides when the matched comparison still shows a gap.
A guide can flag abnormal approach and suggest tower/fan inspection; the alert is not a measured saving.
04 · CASE ANALYSIS
Verify repair or reset separately
After maintenance, compare performance under matched conditions. For setpoint changes, include the chiller and pump electricity response.
The source describes diagnosis and work in progress, with no isolated final saving for CASE81.
| Source item | Status |
|---|---|
| Seasonal temperature tests | In progress |
| Weaker-tower review | Diagnostic work |
| Other-center comparison | Meter consistency prerequisite |
| Isolated final saving | Not reported |
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