Sorted according to ventilation mode:

1. Blowing-type: Tube banks lie in the exhaust side of the blower

2. Draught fan: Tube banks lie in the inlet side of the blower Sorted according to the installation and placing modes of the tube banks:

1. Horizontal type: Horizontally place the tube banks

2. Inclined type: Inclined place the two tube banks with the horizontal plane in 60 degree dip angle

3. Vertical type: The tube banks are vertically placed on both sides of the structure.

Air to air heat exchanger with Inner groove copper pipe,hydrophlic aluminium with 1.5 to 2.3mm gap