Determine the Efficiency of Hydraulic Ram-Pumps

From the early nineteenth century, migration from rural to urban areas as an important social phenomenon known throughout the world. Uneconomical construction of water supply systems in sparsely populated rural or Impassable rural for drinking, agriculture and animal husbandry, etc. and pull factors in urban, the increase in immigration has been important. Ram pumps are used totransmit water to a higher elevation for more than 200 years. It consists of a system with driver and delivery pipes, delivery and impulse valve and an air chamber. The frequent opening and closure of the valves establish a pulsatile flow which in turn results in pumping water to a higher level. The aim of this research is to develop an equation using experimental data to determine the efficiency of the ram pump. The results are compared with the artificial neural network (ANN) results. According to the results, the proposed equation better than the ANN to estimate the efficiency of the ram pump. Therefore, the presented equation as a simple and the precise equation is recommended to estimate the efficiency. In this equation, the value of RMSE and 2 R are 0.0341 and 0.69 respectively