The technical system efficiency of irrigation system is the type and playing volume, overall, the ratio between water consumption and water demand from the source. Ideas for fixing, was analyzed if a sprinkler irrigation system with pressure pipes fed by a centralized pressurizing station (SPP), but the methodology can easily be extended to all other types of irrigation systems. As the water, until it reaches the plant, goes down a route consisting of a set of a sprinkling irrigation system with water supply pipes powered by a pressure pumping station that contributes to transport and distribute them, each element is characterized by a yield partially owned, and the returning water use can be determined by the product of these partial yields. In the paper it is developed a mathematical model to assess with greater accuracy, the partial partial yields and water losses are related to all transport-technical elements of water distribution. This mathematical model was applied to the case study represented by the sprinkler irrigation system with pressure lines Berezeni of complex arrangement-Fălciu Albita, Vaslui county - both existing version and the version proposed refurbishment and modernization. In the current version, Berezeni system may be characterized in the following technical components: 1 ° network of pipelines, distribution is made of asbestos cement pipes and tubes PREMO; 2 ° Watering phones are mainly the type of sprinkler wing; 3 ° station pressurization (SPP) is equipped with pumping aggregates composed of non-adjustable turbo pumps operated with electric motors powered directly from the mains; 4 ° SPP- operating the pipeline network is monitored only on the basis of indications from the gauges placed on individual pump discharge pipes and adjustment commands are manually SPP. The proposed solution for retrofitting and upgrading the irrigation system Berezeni consists of: 1 ° replacing the pipeline transportation-existing distribution network made of HDPE pipes; 2 ° the watering equipment is partially replaced by mobile watering installations with sprinkler installations wing sprinkler and hose drum; 3 ° fitting part of SPP with variable speed pump units through static frequency converter; Additional SPP 4 ° fitting with pressure gauge and meter discharge pipe joint, as well as automatic level indicator Basin water discharge; 5 ° introduction of SCADA automation and assembly operation monitoring SPP – pipeline network. In the case study analyzed resulted in an increase of water use efficiency of 28.76%, which resulted in water savings of 22.34%. In addition, this reduction in water demand implies a significant energy savings, even in the use of mobile watering installations requiring high working pressure.

mathematical model, sprinkler irrigation system, efficiency

Presentation: poster