Table 1.
Thermal stress category | Perceived Temperature (PT) in °C | Predicted Mean Vote (PMV) | Thermo-physiological stress |
---|---|---|---|
4 | PT≥ +38 | Very hot | Extreme heat load |
3 | +32≤ PT<+38 | Hot | Strong heat load |
2 | +26≤ PT<+32 | Warm | Moderate heat load |
1 | +20≤ PT<+26 | Slightly warm | Slight heat load |
0 | 0<PT<+20 | Comfortable | None |
−1 | −13<PT≤ 0 | Slightly cool | Slight cold stress |
−2 | −26<PT≤−13 | Cool | Moderate cold stress |
−3 | −39<PT≤ −26 | Cold | Strong cold stress |
−4 | PT≤ −39 | Very cold | Extreme cold stress |