tailieunhanh - Optimization parameters of irrigation process according to the uniformity

This paper will conduct empirical planning, establishing empirical mathematical model to determine the diameter of the nozzle, swirl coefficient and irrigation output according to the uniformity. | Science & Technology Development, Vol 15, 2012 OPTIMIZATION PARAMETERS OF IRRIGATION PROCESS ACCORDING TO THE UNIFORMITY Vo Tuyen (1), Nguyen Thanh Nam(2), Hoang Duc Lien(3) (1) University of Food Industry HCM city (2) DCSELAB, University of Technology (3) Ha Noi University of Agriculture ABSTRACT: In order to determine the optimal parameters of irrigation process in order to verify the accuracy of the numerical simulation results of experimental determination of the effective spray during irrigation [2], [6]. This paper will conduct empirical planning, establishing empirical mathematical model to determine the diameter of the nozzle, swirl coefficient and irrigation output according to the uniformity. Keyword: Optimization, Irrigation, Uniformity. 1. INTRODUCTION Spray irrigation is a method that supplies water for crop plants in rain-drop or dew-drop form on a small area in around tree by injecting rain machine. Spray irrigation has developed for some decades in many countries with advanced agriculture [1], [3], [4]. By using pump systems, water-pipes and spray heads, we can make economical water irrigation to Design of experiment is planning to conduct experiments in an active order to minimize the number of experiments needed while ensuring the reliability and received empirical mathematical model fit. 2. EXPERIMENTAL MODEL Experimental model of the swirling turbulent jets in spray irrigation technology is presented in figure 1. crop plants [5]. Figure 1. Experimental model: 1. Tank of water; 2. Valve Φ 34; 3. Main tube Φ 34; 4. Corner 900 (Φ 34); 5. Centrifugal pump; 6. Tube level I; 7. Regulating valve Φ 27; 8. Flow sensor; 9. Three-pronged fork Φ21; 10. Pressure gauge; 11. Spray head Trang 80 TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 15, SOÁ K1- 2012 Pipe is connected directly to the pump, For monitoring and measurement of spray head is associated at the end of the pipe. technical parameters of the water jets, and Using pumps outdoor water