Damla sulamada dairesel kesitli boruların farklı damlatıcı aralığına göre uzatma mesafelerinin belirlenmesi
Yükleniyor...
Dosyalar
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Namık Kemal Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalısmada, ülkemizde yaygın olarak kullanılan in-line damlatıcıya sahip dairesel kesitli, damla sulama borusundaki en uygun lateral uzunluklarının belirlenmesi amacıyla, içine geçik labirent kanallı 20, 25, 33, 40 ve 50 cm damlatıcı aralıklı 15,2 mm (iç çap: 13,4 mm) dıs çapa sahip damla sulama borusu incelenmistir. Damlatıcı özellikleri saptanmıs ve lateral boruda meydana gelen sürtünme kayıpları ölçülmüstür. Elde edilen basınç – debi verileri kullanılarak, hazırlanan bir bilgisayar programı yardımıyla 0,5, 1,0, 1,5 ve 2,0 bar çalısma basınçları ile egimsiz kosullarda, es su dagılımını (Cu) saglayan optimum lateral uzunlukları bulunmustur. Arastırma sonuçlarına göre, 4 L/h’ lik debiyi verecek isletme basıncı 1 bar oldugu kosulda lateral uzunlukları; 20 cm damlatıcı aralıgında 31 m, 25 cm damlatıcı aralıgında 35 m, 33 cm damlatıcı aralıgında 42 m, 40 cm damlatıcı aralıgında 49 m ve 50 cm damlatıcı aralıgında 59 m olarak bulunmustur.
In this study, the optimum lateral length of drip irrigation pipe with the emitter which is widely used in our country was examined. For this aim, the diameter (outside: 15,2 mm and inside: 13,4 mm) having the same in-line type emitter with 20, 25, 33, 40 and 50 cm emitter spacing were used, the technical properties of the emitter were determined and the frictional loss in this lateral was calculated from measured head loss and flow rate. The experimental pressure-flow rate and frictional loss equations were used to calculate the optimum lateral lengths to provide uniformity (namely, Christiansen uniformity constant) at 0,5, 1,0, 1,5 and 2,0 bar operating pressures under flat (non-sloppy) line condition using a computer program, which were made specially for this purpose . The variations of optimum lateral lengths with the diameter of pipes under various operating conditions were determined as a percentage. As a result, it was concluded that the optimum lengths of lateral were found to be 31 m for 20 cm dripper spacing, 35 m for 25 cm dripper spacing, 42 cm for 33 cm dripper spacing, 49 m for 40 cm dripper spacing and 59 m for 50 cm dripper spacing.
In this study, the optimum lateral length of drip irrigation pipe with the emitter which is widely used in our country was examined. For this aim, the diameter (outside: 15,2 mm and inside: 13,4 mm) having the same in-line type emitter with 20, 25, 33, 40 and 50 cm emitter spacing were used, the technical properties of the emitter were determined and the frictional loss in this lateral was calculated from measured head loss and flow rate. The experimental pressure-flow rate and frictional loss equations were used to calculate the optimum lateral lengths to provide uniformity (namely, Christiansen uniformity constant) at 0,5, 1,0, 1,5 and 2,0 bar operating pressures under flat (non-sloppy) line condition using a computer program, which were made specially for this purpose . The variations of optimum lateral lengths with the diameter of pipes under various operating conditions were determined as a percentage. As a result, it was concluded that the optimum lengths of lateral were found to be 31 m for 20 cm dripper spacing, 35 m for 25 cm dripper spacing, 42 cm for 33 cm dripper spacing, 49 m for 40 cm dripper spacing and 59 m for 50 cm dripper spacing.
Açıklama
Anahtar Kelimeler
in-line damlatıcı, lateral uzunluğu, damlatıcı aralığı, eş su dağılımı, işletme basıncı, damla sulama, In-line emitter, lateral length, emitter spacing, Christiansen uniformity constant, operating pressures, drip irrigation
