Analysis of pipe diameter variation in axial pumps for reducing head loss

Abstract

Axial type water pumps are widely used in daily activities. The size of the output pipe has a significant influence on the efficiency and performance of the pump performance. By changing the size of the pump will cause changes in flow velocity and fluid pressure on the pipe. The PVC pipe used in this test is 1, 1/2′, 1′, 3/4′, 1/2″ inches. By varying the pipe press carried out measurements of flow speed generated, as well as the flow of the water in the pipe. The length of the pipe causes the loss of the head, because the friction of fluid with the pipe surface is wider. While the pipe size change that will cause fluid flow change. From the test results obtained fluid flow that occurs is turbulent flow with Reynold numbers 17.050 up to 59.884. The lowest head loss value occurs on the 1.5″ pipe size of 2.504, with a water debit of 41x10-5 m3 / s. The water flow through the pipeline causes the Reynolds’ to be lower, if the water flow is low. The tendency of the liquid stream to be laminar, and the flow rate becomes lower.