Ventilated Double Window for the Preheating of the Ventilation Air Comparison of Its Performance in a Northern and a Southern European Climate

<table>Monthly mean values of air flow rate and temperature of the incoming air and monthly total heat gain in Oslo.</table>

Journal of Renewable Energy

fig9

Figure 9

Figure 9: Ventilated Double Window for the Preheating of the Ventilation Air Comparison of Its Performance in a Northern and a Southern European Climate 

Figure 9 | Ventilated Double Window for the Preheating of the Ventilation Air Comparison of Its Performance in a Northern and a Southern European Climate 