Investigation of Hydraulic Indexes of Production Quality of Trickle Tube with in Line Emitter used in Iran

The emitters are the most important part of drip irrigation systems, so the evaluation of the hydraulic performance of drippers is very important to have an efficient irrigation system. Therefore, in this study, 8 Trickle Tube with in Line Emitter, 6 model of non-compensating and 2 model compensating was tested on the constructed physical model of trickle irrigation in the water laboratory of University of Kurdistan. Experiments in 4 different water temperatures of 13, 23, 33 and 43 ° C was investigated on the models in different pressures ranging from 0 to 1.2 times the maximum pressure. The results showed coefficient of variation manufactured of all models excluding 3 models were at the highest level of quality at all temperatures. The percentage flow rate measurements error, were good in the 4 models, acceptable in the 2 models, the average degree in the 1 model and unacceptable in the 1 model. The emission uniformity of all Trickle Tube with in Line Emitter excluding 2 models were excellent or good at all pressures and temperatures. In all Trickle Tube with in Line Emitter, Christiansen uniformity coefficient was more than 70 percent in the all models. The coefficient of variation of the discharge Trickle Tube with in Line Emitter, were in the ranging from 7.7 to 37.2 percent and was two models good, 4 model acceptable and 2 model unacceptable. In summary, the overall condition tested Trickle Tube with in Line Emitter in terms of production quality hydraulic indicators are desirable assessed.