Figure 3: Pressure loss as a function of airflow. dry air Figure 4: Effectiveness as a function of airflow. dry air 400 350 300 250 200 150 100 50 0 0 air flow [m3 h-1 50 100 150 200 250 300 350 400 450 500 ] height (mm) 100 200 300 400 500 Figure 5: Influence on effectiveness due to condensation heat. return-air: +20°C / height: 400 mm / airflow: 150 m3 100 99 98 97 96 95 94 93 92 91 90 -20-15 -10-50 5101520 outside temperature [°C] h-1 return-air RH (%) 100 80 60 40 20 0 20 15 10 5 0 -5 -10 -15 -20 -20-15 -10-50 5101520 outside temperature [°C] 5 100 95 90 85 80 75 70 65 60 55 50 0 50 air flow [m3 h-1 100 150 200 250 300 350 400 450 500 ] height (mm) 100 200 300 400 500 Figure 6: Exhaust air temperature as a function of the outside temperature. return-air: +20°C / height: 400 mm / airflow: 150 m3 h-1 freezing risk return-air RH (%) 100 80 60 40 20 0 effectiveness [%] pressure loss [Pa] exhaust air temperature [°C] effectiveness [%] Pagina 4
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