PERFORMANCE EVALUATION OF LOW PRESSURE DRIP-SUBUNIT UNDER DIFFERENT EMITTER TYPES AND DESIGN PARAMETERS

Rashad, Mohamed A.

doi:10.21608/mjae.2015.98619

PERFORMANCE EVALUATION OF LOW PRESSURE DRIP-SUBUNIT UNDER DIFFERENT EMITTER TYPES AND DESIGN PARAMETERS

Document Type : Original Article

Author

Mohamed A. Rashad

Lecturer, Agric. Eng. Dept., Fac. of Agric., Suez Canal Univ., Egypt.

10.21608/mjae.2015.98619

Abstract

Two experiments were conducted to evaluate the hydraulic performance of drip irrigation subunit designs using three emitter types (Em₁, Em₂; Em₃). Each subunit consisted from one of three lateral lengths (20, 30 and 40m) which connects in open loop (OL) and close loop (CL). The results revealed that shortening the lateral length and close loop increase flow distribution uniformity (DU) for all emitter. There is a different effect of emitter types on the hydraulic performance of each loop at the three lateral lengths. Despite CL improves the hydraulic performance than OL, the effect was always limited. The main influence is attributable to the lateral length and emitter type.

Keywords

References

ASABE STANDARDS, (2008). Design and installation of micro-irrigation systems. ASAE EP405.1 APR1988: 1-5.

Capra, A. and B. Scicolone, (2004). Emitter and filter tests for waste water reuse by drip irrigation. Agric. Water Management, (68): 135-149.

Clark, G. A.; D. Haman; J. F. Prochaska and M. Yitayew, (2007). Micro Irrigation for Crop Production (General system design principles). Elsevier: 161-215.

Harby, M. and T. Hans-Heinrich (2013). On-farm evaluation of low-pressure drip irrigation system for smallholders. Soil & Water Res., 8, 2013 (2): 87–95.

Jiang, S. and Y. Kang, (2010). Evaluation of micro-irrigation uniformity on laterals considering field slopes. J. of irrigation and drainage engineering: 429-434.

Keller, J. and D. Karmeli, (1974). Trickle irrigation design parameters. Transaction of the ASAE, Vol., 17(4): 678-684.

Kirnak, H.; E. Dogan; S. Demir and S. Yalcin, (2004). Determination of hydraulic performance of trickle irrigation emitters used in irrigation systems in the Harran Plain. Turk. J. Agric. Forest., (28): 223-230.

Phocaides, A., (2000). Technical Handbook On Pressurized irrigation techniques. Food and Agriculture Organization of the United Nation: 1-50.

Rashad, M. A. (2006). A study on emitter performance under some operation condition. Unpublished Ph.D Thesis, Ismailia, Egypt: Suez Canal University, Dep. of Agric. Engineering.

Tagar, A. A.; M. S. Mirjat; A. Soomro and A. Sarki, (2010). Hydraulic performance of different emitters under varying lateral lengths., Pak. J. Agri., Agric. Eng., Vet. Sci., 26 (2): 48-59.