Discussion on air handling unit with circular section for cleaning air system

Establishes the mathematical model and compares the frictional resistance, the sectional air speed and resistance of surface air coolers and filters, and sound insulation performance, between circular section and square section AHUs. The results show that the frictional resistance of a circular section AHU is 11% lower than that of a square section AHU at the costs of increased space requirement for the plant room, obviously increased resistance of the surface air coolers and filters and poorer sound insulation effects.