Table 5 COP of the heat pump, with hot water delivered at 40 °C
From: Planned energy-efficient retrofitting of a residential building in Italy
| Frequency [Hz] | |||||
|---|---|---|---|---|---|
| T e [°C] | 110 | 90 | 70 | 50 | 30 |
| −7 | 2.65 | 2.71 | 2.67 | 2.51 | 2.15 |
| 2 | 3.27 | 3.38 | 3.39 | 3.21 | 2.78 |
| 7 | 3.75 | 3.85 | 3.88 | 3.72 | 3.22 |
| 12 | 4.29 | 4.44 | 4.49 | 4.30 | 3.76 |
