Fluid Friction Losses in Two Sets of Black Steel Pipe of Recent Manufacture

摘要

Two sets of black steel pipes have been tested at the National Bureau of Standards (NBS) to determine their frictional loss characteristics. Twenty foot lengths of pipe furnished by the American Iron and Steel Institute ranging from one to three inches nominal pipe size were tested using water in the primary flow measurement facilities at NBS. These facilities use static gravimetric techniques with precision timing to determine flow rates to within plus or minus 0.13% based upon three standard deviations. Pipe pressure losses were measured using water and mercury manometers for pipe flow velocities ranging from 4 to 16 feet per second. Frictional loss characteristics of each pipe were characterized using the conventional Hazen-Williams formulation at each flowrate.