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Warachit Phayom
Witayakool Bunsiri


The objectives of this research were to design and examine the performance of solar-powered irrigation system on different daytime for sugarcane cultivation in Udon Thani. This study was conducted at the experimental area of the Faculty of Technology of Udon Thani Rajabhat University on an area of 6,480 m2, utilizing the sugarcane of the Khon Kaen 3 variety during the dry season. The study was divided into two parts: the design of a solar-powered irrigation system and the study of technical performances of the solar-powered irrigation system across different times of day. The payback period was calculated by comparing energy costs between using a solar pump with a petrol engine pump.  As a result, a 2,200 W solar water pump and a 3 inches water pipeline with a pipe length of 167 m were designed for the 6,480 m2 sugarcane fields. A drip irrigation system was selected to be used in sugarcane irrigation system because it turned out that the drip irrigation system improved the efficiency in irrigating sugarcane plantations. The drip tape had holes with a diameter of 16 mm and 20 cm apart. It was placed into two areas for the water to flow to the end of the tape. The solar panel used in this study was 445 W with a maximum voltage of 45.18 V/panel, and a string of 10 panels, connected in series. The result revealed that the system worked well at every time of the day, morning, noon, and afternoon. According to that, sugarcane met its water requirement by an hour. To be more specific, at the range of highest solar irradiance, it could produce a highest total system efficiency of 6.40% in the morning. In addition, the payback period was approximately 3.56 years comparing the solar pump with engine pump. Therefore, it could be concluded that the drip irrigation system was efficient in growing sugarcane, and also environmentally friendly.

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