Evaluation the effects of some parameters on the operational efficiency of the main water pipe in Karbala city

Abstract

This study analyzes the results obtained from field measurements to one of the main water pipe operating with the dead end system in Karbala city (located in the middle of Iraq is located 105 kilometers south of the capital Baghdad) utilizing Water CAD software. Moreover, the study is conduct to evaluate the existing mainline supply water from AL-khairat area where is the location of the pumping station to improve existing water main line efficiency. The field readings at different junctions’ locations is take and which branch out the mainline at seasons in summer, autumn, winter, and different times by using an ultrasonic device. The collected data then simulated in WaterCAD software using an extended period scenario to determine future network defects. Based on the results, The hydraulic analysis demonstrates the extra flow is required to increase pressure and velocity in junctions. The existing pumping, that is a design amount of about 1200 m3/hr is not sufficient to deliver water to the end zones of the line, since the produced quantity of the pumps in the mainline does not exceed 950 m3/hr which was less than the design capacity as shown by field readings, because damaged many parts of which, It needs to increase the design capacity of not less than 2000m3/hr and this conclusion was made based on analysis of the obtained data. In addition, it is necessary to replace the old pumps with new ones in order to provide adequate flow that achieves the pressure and water velocity required.