Country of Thailand has power to agriculture as the principal. Only by pumping to do the planting, which has higher energy costs continually. The solution that has attracted attention is the use of solar energy technologies. Therefore, this project aims to design and install solar water pumping system with straight, including a study of the performance of the system, by design, to the extent that is the water pump model 4SHM4 1/10th Maxma HP inverter model ND1-2-002 2 HP and Polycrystalline Silicon solar panel.Size 250 W results study found that this system requires the use of solar panels per serial. The 10-Panel voltage as high as 303 V plugged into the inverter and pumping by the voltage values equal to 220-400 V and 220 V, respectively. Test your solar system. Effective only with 10.27% electricity as high as 6.09 A maximum equal to the voltage V and the radiation intensity 265.51 solar maximum equal to 975.58 W/m2 to test the performance of the system is divided into two cases, it is the first case there is a distance of Hestia, Dr womthao with 4.91 m at the distribution level. Solar intensity values are average as high as 1018.83 W/m2, the average pumping rate as high as the average 0.43 m3/min, the maximum water volume m3/day 430.33 highest average system performance equivalent to 2.63% intensity W/447 m2 solar case, the second phase, ESA, Dr. womthao with 13.57 m water supply level. Has the highest solar intensity is equal to 932.33 W/m2, the average pumping rate as high as 0.41 m3/min, the maximum average water volume m3/day 409.00 highest average system performance is equal to 9.61% intensity W/m2 solar estimate this whole 626.5 peak performance of the system depends on the light intensity and water flow rate? When considering the positive economics, then Pumping with photovoltaic cells that phase, ESA womthao and 4.91 m Dr to 13.57 m. Contains the unit price of water is equal to 3.94 Bath/Bath/m3 and m3 respectively, 4.11.
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