IEA ECB Annex 62 Ventilative Cooling has summarized the appropriate ventilative cooling principles for different outdoor climatic conditions (Table 1). For differences between indoor comfort and average outdoor temperature between -10°C and 2°C, ventilative cooling is an attractive strategy. Supplementary natural or mechanical cooling strategies are listed. Their findings also show that it is not recommended to use ventilative cooling strategies under humid and hot conditions because of the effect of relative humidity.

Table 1: Overview of typical ventilative cooling strategies applied depending on outdoor climatic conditions and type of ventilation system [1]


[1] Heiselberg, P., Ventilative Cooling Design Guide, IEA EBC Annex 62, Aalborg University: Aalborg, Denmark, 2018

Posted in: Cooling, Thermal Comfort, Ventilation