Table 1.
Mean values of physical-chemical parameters (total chlorine, pH, conductivity, and temperature) detected in hot and cold water sampled at different point of use (Point A, Point B, Point I, Point E, and Point T) of the buildings IB, CB and TB. NA = Not Applied.
| Physical-Chemical Parameters |
Hot Water Samples | Cold Water Samples | |||
|---|---|---|---|---|---|
| Point A | Point B | Point I | Point E | Point T | |
| Building with independent hot water production (IB) | |||||
| Total Chlorine (mg/L) | 0.21 ± 1.1 | 0.15 ± 0.07 | 0.05 ± 0.03 | 0.17 ± 0.08 | 0.11 ± 0.05 |
| pH | 6.4 ± 0.8 | 6.6 ± 1.2 | NA | NA | NA |
| Conductivity (µS) | 801 ± 253 | 784 ± 203 | NA | NA | NA |
| Temperature (°C) | 48.1 ± 8.6 | 39.9 ± 15.3 | 18.7 ± 2.9 | 19.5 ± 2 | 19.8 ± 1.4 |
| Building with central hot water production (CB) | |||||
| Total Chlorine (mg/L) | 0.09 ± 0.07 | 0.05 ± 0.03 | 0.03 ± 0.02 | 0.06 ± 0.03 | 0.05 ± 0.04 |
| pH | 6.6 ± 1 | 6.7 ± 1.2 | NA | NA | NA |
| Conductivity (µS) | 791 ± 235 | 805 ± 254 | NA | NA | NA |
| Temperature (°C) | 48.3 ± 7.9 | 40.1 ± 7 | 17.4 ± 2.2 | 18.9 ± 2.1 | 16 ± 1.4 |
| Building with solar thermal system for hot water production (TB) | |||||
| Total Chlorine (mg/L) | 0 | 0 | 0 | 0 | 0 |
| pH | 6.9 ± 1 | 6.9 ± 1.1 | NA | NA | NA |
| Conductivity (µS) | 793 ± 215 | 799 ± 256 | NA | NA | NA |
| Temperature (°C) | 39.5 ± 8.9 | 33.8 ± 7.9 | 17.4 ± 2.6 | 18.9 ± 2.2 | 17.6 ± 2.9 |