Engineering, 19.07.2019 01:30 Cjohnston742
Water is drawn steadily by a pump at a volumetric flow rate of 0.8 m/min through a pipe with a 10 cm diameter inlet. the water is delivered to a tank placed at a height of 10 m above the pipe inlet. the water exits through a nozzle having a diameter of 2.5 cm. water enters at 25°c and 1 atm pressure but there is no significant change in pressure and temperature at exit. six percent of the power input to the pump is dissipated in the form of heat into the surroundings. take the value of acceleration due to gravity (g) equal to 9.8 m/s determine (a) the velocity of the water at the inlet and exit and (b) the power required by the pump.
Answers: 1
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
Engineering, 03.07.2019 15:10
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
Answers: 1
Engineering, 04.07.2019 18:10
The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false
Answers: 1
Engineering, 04.07.2019 18:10
For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater
Answers: 3
Water is drawn steadily by a pump at a volumetric flow rate of 0.8 m/min through a pipe with a 10 cm...
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