Find the input work needed [kJ/kg] to pump water at 60 oC from 15 kPa to...
Find the input work needed [kJ/kg] to pump water at 60 oC from 15 kPa to 2.5 MPa. For your analysis assume that the water is a incompressible substance at 60 oC.
Homework Answers
Add Answer to:
Find the input work needed [kJ/kg] to pump water at 60
oC from 15 kPa to...
0.1 kg/s of saturated liquid water enters an adiabatic reversible pump at 10 kPa and exits...
0.1 kg/s of saturated liquid water enters an adiabatic reversible pump at 10 kPa and exits at 4 MPa. Calculate the input power required by the pump. Select one: O a. 4 kW O b. -4 kJ/kg O c.4kJ
A 4-kW pump operating at steady state draws in liquid water at 100 kPa, 15?C with...
A 4-kW pump operating at steady state draws in liquid water at 100 kPa, 15?C with a mass flow rate of 4.5 kg/s and delivers water at 1 MPa pressure. Ignore the kinetic and potential energy changes from inlet to exit. Determine (a) the isentropic efficiency of the pump and (b) whether the power input rating is adequate
A pump increases the water pressure from 100 kPa at the inlet to 900 kPa at...
A pump increases the water pressure from 100 kPa at the inlet to 900 kPa at the outlet. Water enters this pump at 15 degree C through a 1-cm-diameter opening and exits through a 1.5-cm-diameter opening. Determine the velocity of the water at the inlet and outlet when the mass flow rate through the pump is 0.5 kg/s. Will these velocities change significantly if the inlet temperature is raised to 40 degree C?
A piston/cylinder setup contains 1 kg of water at 150 kPa, 20-C. 3000 kJ of heat...
A piston/cylinder setup contains 1 kg of water at 150 kPa, 20-C. 3000 kJ of heat is added from a 600-C source until the water is at 1 MPa, 500.C. Find the total change in entropy, in kJ/K. Add a negative sign (-) in your numerical answer should you get a negative answer.
Thermodynamics Compare the compressor work input required to compress water isentropically from 100 kPa to 1...
Thermodynamics
Compare the compressor work input required to compress water isentropically from 100 kPa to 1 MPa, assuming that the water exists as (a) saturated liquid and (b) saturated vapor at the inlet state.
2. A pump delivers 4 m3/min of water from 110 kPa to 350 kPa. Both pipe's...
2. A pump delivers 4 m3/min of water from 110 kPa to 350 kPa. Both pipe's gages are on the same level. The inlet and outlet pipe diameters are 16 cm and 13 cm, respectively. The inlet and outlet temperature are both 25°C and mass density of water is 997 kg/m². Calculate the pump work in kW.
A piston-cylinder contains 0.1 kg of water at 1000 kPa and 500 o C. The water is...
A piston-cylinder contains 0.1 kg of water at 1000 kPa and 500 o C. The water is now cooled with a constant force on the piston until it reaches half the initial volume. After it cools to 25 oC while the piston is against the stops. Find the final water pressure (in kPa) and the work in the overall process (in kJ).
(5 pts) A pump is pumping water from a lake to the top of a mountain...
(5 pts) A pump is pumping water from a lake to the top of a mountain through a constant- diameter pipe. Water exits the pipe at a volumetric flow rate of 0.04 m/s. The vertical distance between the lake surface and the pipe exit at the top of the mountain is 100 m. The diameter of the pipe is 10 cm. All mechanical energy losses are negligible and the flow is steady and incompressible. (Water density-I g/cm, ?-I.) Determine a)...
Boiler P=8000 kPa, T =73°C U=305 H=306 kJ/kg P=8 MPa, T=400°C U=2867 H=3142 kJ/kg S =...
Boiler P=8000 kPa, T =73°C U=305 H=306 kJ/kg P=8 MPa, T=400°C U=2867 H=3142 kJ/kg S = 6.37 kJ/kg.K) W pump Pump Qboller Turbine Wurm Condenser Sat. liq., P=30 kPa U=289 H=290 kJ/kg P = 30 kPa, x = 0.90, U'= 289 H'= 290 UY= 2467 H'=2625 kJ/kg s'=0944 s'= 7.77 kJ/kg.K) Qcondenser For the steam power plant shown above, if the mass flow rate of the steam is 10 kg/s and the surrounding temperature is 25°C, determine the following: a....
In a steam power plant, water is pressurized in an adiabatic pump from 100kPa as a saturated liqu...
In a steam power plant, water is pressurized in an adiabatic pump from 100kPa as a saturated liquid to 5 MPa at 150C. The pump is directly driven by an adiabatic steam turbine, which also powers a generator. Steam enters the steam turbine at 5 MPa and 450C and leaves as saturated vapor at 100kPa. Determine the net-work output of the pump-turbine-generator combination if the generator operates at 85% efficiency. (in kJ/kg) ) b) Determine the entropy generation for both...
0.1 kg/s of saturated liquid water enters an adiabatic reversible pump at 10 kPa and exits at 4 MPa. Calculate the input power required by the pump. Select one: O a. 4 kW O b. -4 kJ/kg O c.4kJ
A pump increases the water pressure from 100 kPa at the inlet to 900 kPa at the outlet. Water enters this pump at 15 degree C through a 1-cm-diameter opening and exits through a 1.5-cm-diameter opening. Determine the velocity of the water at the inlet and outlet when the mass flow rate through the pump is 0.5 kg/s. Will these velocities change significantly if the inlet temperature is raised to 40 degree C?
A piston/cylinder setup contains 1 kg of water at 150 kPa, 20-C. 3000 kJ of heat is added from a 600-C source until the water is at 1 MPa, 500.C. Find the total change in entropy, in kJ/K. Add a negative sign (-) in your numerical answer should you get a negative answer.
Thermodynamics
Compare the compressor work input required to compress water isentropically from 100 kPa to 1 MPa, assuming that the water exists as (a) saturated liquid and (b) saturated vapor at the inlet state.
2. A pump delivers 4 m3/min of water from 110 kPa to 350 kPa. Both pipe's gages are on the same level. The inlet and outlet pipe diameters are 16 cm and 13 cm, respectively. The inlet and outlet temperature are both 25°C and mass density of water is 997 kg/m². Calculate the pump work in kW.
(5 pts) A pump is pumping water from a lake to the top of a mountain through a constant- diameter pipe. Water exits the pipe at a volumetric flow rate of 0.04 m/s. The vertical distance between the lake surface and the pipe exit at the top of the mountain is 100 m. The diameter of the pipe is 10 cm. All mechanical energy losses are negligible and the flow is steady and incompressible. (Water density-I g/cm, ?-I.) Determine a)...
Boiler P=8000 kPa, T =73°C U=305 H=306 kJ/kg P=8 MPa, T=400°C U=2867 H=3142 kJ/kg S = 6.37 kJ/kg.K) W pump Pump Qboller Turbine Wurm Condenser Sat. liq., P=30 kPa U=289 H=290 kJ/kg P = 30 kPa, x = 0.90, U'= 289 H'= 290 UY= 2467 H'=2625 kJ/kg s'=0944 s'= 7.77 kJ/kg.K) Qcondenser For the steam power plant shown above, if the mass flow rate of the steam is 10 kg/s and the surrounding temperature is 25°C, determine the following: a....
In a steam power plant, water is pressurized in an adiabatic pump from 100kPa as a saturated liquid to 5 MPa at 150C. The pump is directly driven by an adiabatic steam turbine, which also powers a generator. Steam enters the steam turbine at 5 MPa and 450C and leaves as saturated vapor at 100kPa. Determine the net-work output of the pump-turbine-generator combination if the generator operates at 85% efficiency. (in kJ/kg) ) b) Determine the entropy generation for both...
Most questions answered within 3 hours.
-
Question Three
Suppose you as project manager are using the Waterfall
development methodology on a large...
asked 50 minutes ago -
Which statement is not true about welfare in Canada?
A.Benefits typically vary based on one's ability...
asked 1 hour ago -
Please help me with FLOWCHART and UML diagram for class,
thank you!
#include <iostream>
#include <fstream>...
asked 2 hours ago -
3. Describe the “logic circuit” of the Lac operon. Which
proteins are bound or not to...
asked 2 hours ago -
Ayesha’s adjusted gross income is $60,000 in 2019. She donated a
piece of artwork with a...
asked 2 hours ago -
For Dijkstra’s shortest path algorithm:
a. Give the Big-O time for Dijkstra’s shortest path algorithm
and...
asked 2 hours ago -
Phosphorus violates the 'octet rule' in biological molecules,
forming more covalent bonds than expected based on...
asked 2 hours ago -
A 1.3 eV electron has a 10-4 probability of tunneling
through a 2.4 eV potential barrier....
asked 2 hours ago -
What is the one ingredient that is common to being successful
with all stakeholders?
profit
trust...
asked 2 hours ago -
Write an assembly language 32 bit program that reads in lines of
text by a .txt...
asked 2 hours ago -
what is the density ( in g/L) of hydrogen gas at 29 degrees C and a...
asked 2 hours ago -
5-6. You are considering three investment alternatives for some
spare cash: Old Reliable Corporation stock (A1),...
asked 2 hours ago