As a test to determine the effective wall roughness of an existing pipe installation, water at 10°C is pumped through it at the rate of 300 L/min. The pipe is standard steel tubing, 40 mm OD x 3.0 mm wall. Pressure gages located at 25 m apart in a horizontal nm of the pipe read 1235 kPa and 849 kPa. Determine the effective pipe wall roughness.

A capillary tube viscometer is being selected to measure viscosity of a liquid food. The maximum viscosity to be measured will be 230 cP and the maximum flow rate that can be measured accurately is 0.015 kg/min. If the tube length is 10cm and a maximum pressure of 25 Pa can be measured, determine the tube diameter to be used. The density of the product is 1000 kg/m3.

Engine oil (n = 0.20 Pa·s) passes through a fine 2.00-mm-diameter tube that is 10.2 cm long. ▼ Part A What pressure difference is needed to maintain a flow rate of 4.4 mL/min ? Express your answer to two significant figures and include the appropriate units. ΔΡ = 4.76 Submit μA Provide Feedback Pa Previous Answers Request Answer ? X Incorrect; Try Again; 27 attempts remaining Next >

Water at 15 degrees Celsius is flowing through a 2-in ID smooth pipe. The friction loss for a 100-ft section of the pipe amounts to 4.8 lbf/lbm. Determine the velocity of the flow.