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gree combined air handler unit ahu

Power supply:380~4200/1/50/60 V/Ph/Hz
Refrigerant:R32/410A
comprosser:DC inverter
air flow:1800m3/h
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35mm 1014 insulation dunAn combined air handling unit AHU 

Under same tube spacing, increasing the net flow area between tubes can decrease the net face velocity and reduce the turbulence on the leeward side of oval tube, so as to reduce the wind resistance. The following figures on the left are the comparison of wind-side resistance test results between oval tube heat exchanger and circular tube heat exchanger under different wind velocities. 

Higher Heat Transfer Coefficient

Oval tube avoids the escape of airflow in circular tube, increasing the effective contact surface area by 40%, so as to improve the efficiency of heat exchange. The
following figure onw ght is the comparison of heat
transfer coefficient test results between oval tube heat
exchanger and circular tube heat exchanger under
different wind velocities. It can be seen from the figure
that the heat transfer coefficient of oval tube heat
exchanger is about 10%-15%higher than that of circular
tube heat exchanger.

 
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