การออกแบบระบบทางกลและการวิเคราะห์กังหันน้ำขนาดเล็กแบบแกนนอน

บทคัดย่อ

This research presents the results studying of the design of mechanical systems for low-speed horizontal axis micro water turbine generators which operate in the rang of 2-6 m/s water velocity. The objective of this study and research is to find out the optimum parameters of 200 Watt for horizontal axis micro water turbine generators model. The configuration of the model has the cut in wheel rotational speed of 200-300 rpm at the rated water speed of 6 m/s and can be cut-in water speed for power generate at 2 m/s. The micro water turbine system is designed by using 2 units of 100 W generators coupling to the single shaft become to 200-Watt power output. Micro water turbine is connected with the gear system to achieve the starting speed of 350–400 rpm. The maximum efficiency of the system was determined using computational fluid dynamics techniques. With the optimal parameters from this study, the micro water turbine generator can be designed to decrease drag force and reduce the loss rate that affect the work efficiency.