Heat Pump Performance: ground_source_cooling
Heat pump COP and capacity fraction data as a function of outdoor temperature (air-source) or entering water temperature (ground/water-source) — covers air-source heating/cooling, cold-climate ASHP, ground-source, and water-source heat pumps
| heat pump type | outdoor temp F | capacity fraction (dimensionless) | cop (dimensionless) | notes | power input kW (kW) |
|---|---|---|---|---|---|
| ground_source_cooling | 50 | 1.1 | 7.5 | Ground-source cooling; EWT 50F; ideal loop condition in heating-dominated climate; excellent cooling COP; ClimateMaster TZ30 or WaterFurnace 7-Series achieves EER 40+ at these conditions | 2.58 |
| ground_source_cooling | 60 | 1.05 | 6.8 | Ground-source cooling; EWT 60F; good loop condition; well-designed loop field maintains 45-65F EWT year-round; COP significantly better than air-cooled at 95F ambient | 2.72 |
| ground_source_cooling | 70 | 1.02 | 6 | Ground-source cooling; EWT 70F; moderate loop temperature; typical mid-summer EWT for adequately sized loop; still substantially better than air-cooled chiller at 95F ambient | 2.99 |
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