Engineering, 20.04.2020 21:08 nestergurl101

3. A large dynamometer operates a pump that circulates a viscous fluid through a restrictive fluid circuit. Under steady operating conditions, heat loss from the fluid is measured as 150 kW when the shaft is rotating at 1000 rpm, and 275 kW when the shaft speed increases to 2000 rpm. The pump efficiency varies with speed according to the equation:

n. = 0.85-5x10 where Ω is the shaft speed in ipm and n=P out/ P in.

Find the shaft power (in kW) and torque (in N-m) at both shaft speeds. Hint: Assume the heat loss rate in the fluid is due only to friction created by the pumping power.

the efficiency at both shaft speeds, and then the shaft power. From the shaft power and shaft speed, you can find the shaft torque at both speeds.

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, 19deleonl

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Answers: 2

continue

Engineering, 04.07.2019 18:10, chadatkin

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)

Answers: 3

continue

Engineering, 04.07.2019 18:10, mirmir62

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.

Answers: 1

continue

Engineering, 04.07.2019 18:20, Doogsterr

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor

Answers: 3

continue

You know the right answer?

3. A large dynamometer operates a pump that circulates a viscous fluid through a restrictive fluid c...