Table 6 COP of heat pump for DHW production at 50 °C and evaporator in external air
From: Planned energy-efficient retrofitting of a residential building in Italy
Frequency [Hz] | |||||
|---|---|---|---|---|---|
T e °C | 110 | 90 | 70 | 50 | 30 |
−7 | 2.19 | 2.22 | 2.19 | 2.06 | 1.79 |
2 | 2.64 | 2.71 | 2.70 | 2.57 | 2.25 |
7 | 2.97 | 3.06 | 3.04 | 2.94 | 2.57 |
12 | 3.36 | 3.49 | 3.49 | 3.37 | 2.97 |
20 | 4.15 | 4.35 | 4.36 | 4.24 | 3.74 |
25 | 4.69 | 4.89 | 4.93 | 4.76 | 4.22 |
30 | 5.21 | 5.44 | 5.47 | 5.29 | 4.66 |
35 | 5.71 | 5.97 | 6.00 | 5.81 | 5.14 |