Chiller Selection Calculator
Calculate chiller capacity and chilled water system parameters
Chiller System Configuration
°C
°C
°C
Calculation Results
Total Capacity Required
-
kW (- RT)
Per Chiller Capacity
-
kW (- RT)
CHW Flow Rate
-
L/min (- GPM)
Est. Power Input
-
kW (COP: -)
Chilled Water System
Temperature ΔT:
-
Per Chiller Flow:
-
Pipe Size (Est.):
-
Header Size (Est.):
-
Condenser System
Heat Rejection:
-
CW Flow (if water-cooled):
-
CW Supply/Return:
-
Cooling Tower (Est.):
-
Efficiency Reference (AHRI Certified)
Air-Cooled (Small):
COP 2.8-3.2
Air-Cooled (Large):
COP 3.0-3.5
Water-Cooled (Screw):
COP 5.0-6.0
Water-Cooled (Centrifugal):
COP 6.0-7.5
Chiller Selection Guidelines
| Building Type | Cooling Load (W/m²) | Operating Hours | Diversity Factor |
|---|---|---|---|
| Office Building | 100-150 | 2,500-3,000 | 0.7-0.8 |
| Hotel | 120-180 | 4,000-5,000 | 0.6-0.7 |
| Hospital | 150-250 | 6,000-8,000 | 0.8-0.9 |
| Data Center | 500-2000+ | 8,760 | 0.9-1.0 |
| Shopping Mall | 150-200 | 3,500-4,500 | 0.75-0.85 |
| Factory | 80-300 | 2,000-6,000 | 0.8-0.95 |
Air-Cooled Chiller
- + No cooling tower required
- + Lower maintenance
- + Easier installation
- - Lower efficiency (COP 2.8-3.5)
- - Performance drops at high ambient
- - Best for <500 RT systems
Water-Cooled Chiller
- + Higher efficiency (COP 5.0-7.5)
- + Stable performance
- + Better for large systems
- - Requires cooling tower
- - Higher water consumption
- - More complex maintenance