An Exhaust Device Using Natural Wind

(Part2:Experimental Study)

Abstract

An exhaust device using no power but using natural wind is proposed. The structure is very simple, and is constructed by a circular cylindrical vessel and a slit producing a jet. The swirling jet produces a low pressure region and inhales the gas. The flow structure is visualized by the tuft method. The suction flow rate is measured. Effect of swirling jet and the spiral structure of the flow in this device is clarified by comparing two other cases. The effect of direction of wind into this device is also presented.