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 wind speed and outdoor air temperature in Lisbon and Oslo. </table>

Journal of Renewable Energy

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Figure 5

Figure 5: Ventilated Double Window for the Preheating of the Ventilation Air Comparison of Its Performance in a Northern and a Southern European Climate 

Figure 5 | Ventilated Double Window for the Preheating of the Ventilation Air Comparison of Its Performance in a Northern and a Southern European Climate 