The Experimental Study of Bi-Directional Impulse Turbine on Standing Wave Thermoacoustic Engine

Bi-directional air turbine has one of the primary functions, namely changing the linear movement of air into a rotating motion. This rotating motion is always in the same direction regardless of the direction of air movement. This bi-directional turbine impulse type moves by using thermoacoustic waves which result from the conversion of heat energy into acoustic energy. The turbine using in this research has a diameter of 48 mm and 50 mm. Besides, the turbine also has a variety of blade numbers and variations of distance from the sound source. The impulse turbine research with 50 degrees inlet angle obtained results that the maximum rotational motion in the turbine with a diameter of 50 mm and the number of blades 28. The optimal results were purchased at a distance of 200 mm from the sound source, which was 361 rpm.