Table 4 Yearly electrical and thermal output of the system and auxiliary energy consumption
Months | Average solar irradiance | Average thermal output | Average electrical output | Average auxiliary energy | Average hot water consumption |
|---|---|---|---|---|---|
|  | (kWh m−2) | (kWh d− 1) | (kWh d− 1) | (kWh d− 1) | (m3) |
Sep | 4.8 | 67.5 | 31.9 | 0.2 | 1.39 |
Oct | 4.4 | 64.1 | 29.9 | 1.2 | 1.76 |
Nov | 3.8 | 60.1 | 25.8 | 3.3 | 2.80 |
Dec | 3.1 | 43.4 | 21.4 | 0.8 | 0.79 |
Jan | 4.6 | 58.8 | 27.5 | 1.8 | 1.79 |
Feb | 3.5 | 53.2 | 23.7 | 3.9 | 0.90 |
Mar | 4.2 | 64.4 | 30.1 | 0.0 | 1.09 |
Apr | 4.8 | 55.1 | 24.9 | 0.8 | 2.26 |
May | 6.5 | 47.1 | 25.6 | 0.0 | 0.73 |
Jun | 4.7 | 40.8 | 26.8 | 0.0 | 0.27 |
Jul | 4.1 | 40.7 | 23.7 | 0.9 | 0.79 |
Aug | 4.5 | 56.1 | 29.1 | 0.0 | 1.63 |