Table 11.
Differences between reference PIMINUTE values in Table 2 and PI obtained with the dataset associated to the daily means. Performance Index (PI) is calculated as the percentage of time for which the combination of T and RH data fits into the specifications of each ASHRAE climate class. The differences ΔPIDAILYMEAN are calculated as (PIDAILYMEAN – PIMINUTE).
| Class | ΔPIDAILYMEAN (%) | |||
|---|---|---|---|---|
| Probe 1 | Probe 2 | Probe 3 | Probe 4 | |
| AA | 1.1 | −1.7 | 0.6 | −2.0 |
| As | 1.1 | 7.2 | 0.6 | 7.0 |
| A | 1.1 | 1.2 | 0.6 | 1.0 |
| B | 0.1 | 1.7 | 0.1 | 1.4 |
| C | 0.1 | −7.3 | 0.1 | −4.6 |
| D | 0.0 | 0.0 | 0.0 | 0.0 |