Abstract
We confirmed the superiority of the flow of the new 3D-blades by Computational Fluid Dynamics(CFD) for the high efficiency of the turbofan for package air-conditioner indoor units. As a result, the new 3D-blade fan reduces the flow-separation at the leading-edge and blows out uniformly form the outlet of the fan. In addition decreasing of 15% of axis power by the CFD result, and reducing of fan motor input 11% by the actual machine evaluation.
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