2) A compressor draws in 0.5 kg,m/s of air with 7 m/sspeed, 100 kPa pressure, and 0.95 m /kgm The airleaves at 5 m/s, 700 kPa and 0.19 m2/kgm- Theinternal energy of the air leaving is 90 kJ/kgmgreater than that of the air entering which is 70kJ/kgm. The coolant absorbs heat from the air at therate of 58 kW. Determine the work in kW.'

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Answered: 2) A compressor draws in 0.5 kg,m/s of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Section: Chapter Questions

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An air compressor absorbs 1000 kg of air per hour at a pressure of 100 kPa and 500 kPait presses on the pressure. Specific volume of air at compressor Inlet 0.8 m3/ kg, at Exit0.2 m3/ kg dir. The internal energy of the air at the outlet is 100 kJ/kg more than at the inlet.60 000 kJ/h heat transfer occurs from the compressor to the air. Kinetic and potential energyfind the power needed to operate the compressor, neglecting its changes.
Steam flows steadily through an adiabatic turbine. The inlet conditions of the steams are 4 MPa, 500 C and 93m/s, and the exit conditions are 30 kPa, 89 percent quality, and 38m/s. the mass flow of the steam is 28kg/s. Determine:a) the change in kenitic energy b) the power outputc) turbine inlet area
A steam turbine receives a steam flow of 1.25 kg/s and delivers 375 KW. The heat loss from the casing is negligible. If the velocity at entrance is 60 m/s,the velocity at exit is 36 m/s, and the inlet pipe is 10 m above the exhaust pipe, calculate the change of specific enthalpy across the turbine (KJ/kg)
NEED ASAP A compressor draws in 0.5 kgm/s of air with 7 m/s speed, 100 kPa pressure, and 0.95 m3/kgm. The air leaves at 5 m/s, 700 kPa and 0.19 m3/kgm. The internal energy of the air leaving is 90 kJ/kgm greater than that of the air entering. The coolant absorbs heat from the air at the rate of 58 kW. Determine the work in kW. Show given, formula and step by step solution. Kindly box every answer to the process. My prof said it can be 5 or more step to get the answer. Thanks. (No shortcut to get the final answer pls just step by step process to get the final answer) Will thumbs up after. Have a great day tutor.
Air flows into a turbine at a rate 30 [m 3 /s], a temperature of 1100 [K] anda pressure of 300 [kPa]. The turbine’s work output is 200 [kJ/kg]. Determine thetemperature of the air at the exit, the power output in [kW] and the isentropicefficiency. The pressure ratio of the turbine is 3. The specific gas constant, R, for airis 0.287 [kJ/kg-K].
A vapor at a flow rate of 3 kg/s enters a group of eight (8)nozzles at 1.5 MPa, 240 oC and a velocity of 480 m/s, and then expands to 0.07MPa. If the efficiency of each nozzle is 0.95 and the cross-sectional area ofeach nozzle is rectangular with sides’ length ratio is 1:2.5. Determine:a- The steam exit velocity for each nozzle and the dimensions of the nozzlesection at its entrance and its exit.b- The steam exit velocity in case of the neglecting the steam entrance velocity
2000 kg/h of waste materials with enthalpy of 100 kJ/kg entered a turbine and exited with 20 m/s velocity and enthalpy of 2500 kJ/kg. Then, for every kilogram of waste materials, it releases 500 kJ of heat. What is the net work output of this system?
Water enters a boiler at 18.33 °C and 137.9 kPa through a pipe at an average velocityof 1.52 m/s. Exit stream at a height of 15.2 m above the liquid inlet leaves at 137.9 kPaand 148.9 °C at 9.14 m/s in the outlet line. At steady-state, how much heat must beadded per kg mass of steam? The flow in the pipe is turbulent.
A steady-flow, steady-state thermodynamic system receives 1.67 lb/sof a fluid at 4320 psfa and 200°F and discharges it from a point80-ft above the entrance section at 21600 psfa and 600°F. The fluidenters with velocity of 120 ft/s and leaves with a velocity of 40ft/s. During this process, there are supplied 400 Btu/min of heatfrom an external source, and the increase in enthalpy is 2.0 Btu/lb.Determine the work done in horsepower.
Solve the problem. An air compressor (an open system) receives 272 kg per min of air at 99.29 kPa and a specific volume of 0.026 m3/kg. The air flows steadiy through the compressor and is discharged at 689.5 kPa and 0.0051 m3/kg. The initial internal energy of the air is 1594 J/kg; at discharge, the internal energy is 6241 J/kg. The cooling water circulated around the cylinder carries away 4383 J/kg of air. The change in kinetic energy is 896 J/kg increase. Sketch an energy diagram. Compute the work.
In a centrifegal compressor air flows steadily at a rate of 2,1 kg/s and 81,00m/s with a pressure of 90kpa and specific volume of 0,85cubic meter per kilograms. The exit condtions are: speed 200m/s, pressure 900kpa and specific volume of 0,13cubic meter per kilograms. The internal energy of the air at exit is 90kj/kg greater than that of the air at inlet. Heat is loss during compressor at the rate of 95kj/s. Calculate the following; (a) power required to drive the compressor (b) Diameter of the inlet and outlet pipes?
The enthalpy of air is increased by 139.586 KJ/kg in a compressor. The rate of airflow is 16.42 kg/min. The power input is 48.2 KW. Determine the heat flow in KW.

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