subject
Engineering, 08.01.2020 05:31 Crull5999

Aself-priming centrifugal pump is used to pump water at 25°c from a reservoir whose surface is 2.2 m below the centerline of the pump inlet. the pipe is pvc pipe with an inner diameter of 24.0 mm and negligible average inner roughness height. the pipe length from the submerged pipe inlet to the pump inlet is 2.8 m. there are only two minor losses in the piping system from the pipe inlet to the pump inlet: a sharp-edged reentrant inlet (kl = 0.85) and a flanged smooth 90° regular elbow (kl = 0.3). the pump’s required net positive suction head is provided by the manufacturer as a curve fit: npshrequired = 2.2 m + (0.0013 m/lpm2)v˙2 where the volume flow rate is in lpm. the standard atmospheric pressure is patm = 101.3 kpa. for water at t = 25ºc, rho = 997.0 kg/m3, μ = 8.91 × 10−4 kg/m·s, and pv = 3.169 kpa. estimate the maximum volume flow rate (in units of lpm) that can be pumped without cavitation. solve this problem using appropriate software.

ansver
Answers: 2

Another question on Engineering

question
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
question
Engineering, 04.07.2019 18:10
Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.
Answers: 2
question
Engineering, 04.07.2019 18:10
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
question
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
You know the right answer?
Aself-priming centrifugal pump is used to pump water at 25°c from a reservoir whose surface is 2.2 m...
Questions
question
Mathematics, 25.06.2019 13:30
question
Social Studies, 25.06.2019 13:30
Questions on the website: 13722360