Institution

Abstract

The study of automatic watering management system using solar cell for rice fields in non-irrigated areas, Ubon Ratchathani province aimed to investigate the efficiency of automatic water management system using solar cells and to study the costs and profits of using solar cells in non-irrigated areas. The period of times in doing this research started from 2015 to 2016 in developing water sources which consisted of reservoir in size of 20x37x4 cubic meters and canal in size of 120×15 x15 cubic meters. The maximum water volume is 2,888 cubic meters in September 2015 and the minimum water volume is 913 cubic meters in May 2016. The solar cell electricity system with Poly-crystalline 24V 300W JINSHI was selected for two panels and two batteries with 12V 100A. The management of energy and water with automatic microcontroller was found that the electricity power used for pumping water was 2,452 W/day and the amount of water used for agriculture was 12,680 liters/day. According to the analysis of costs and profits of the automatic water management system using solar cells in first year, it was found that all costs were 286,833 baht/year whereas the profits of the development of land utilization were 159,122 baht/year. This study concluded that the automatic water management system using solar cells was appropriate to develop and will be able to make it more efficient in the future.