A hydraulic pump is shown in the following Figure, flow rate is 25 L/min, the diameter of suction pipe is 30mm, and the suction port of pump is higher than the oil surface of tank, h=300mm. Kinematic viscosity of oil is 30×10-“m²/s, density of oil is 900kg/m³. If only the pressure loss along the straight suction pipe with length 400mm is considered 75 (2= - a = 2, g=9.8) R. (1) Calculate the flow velocity in the suction pipe; (2) Judge the flow state in suction pipe; (3) Calculate the pressure loss along the straight suction pipe; (4) Calculate the vacuum degree of suction port.

A hydraulic pump is shown in the following Figure, flow rate is 25 L/min, the diameter of suction pipe is 30mm, and the suction port of pump is higher than the oil surface of tank, h=300mm. Kinematic viscosity of oil is 30×10-“m²/s, density of oil is 900kg/m³. If only the pressure loss along the straight suction pipe with length 400mm is considered 75 (2= - a = 2, g=9.8) R. (1) Calculate the flow velocity in the suction pipe; (2) Judge the flow state in suction pipe; (3) Calculate the pressure loss along the straight suction pipe; (4) Calculate the vacuum degree of suction port.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.4P: 5.4 Evaluate the Stanton number for flow over a tube from the following data: , , , , .

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