Homework Answers
Add Answer to:
1.
6. An adiabatic, steady state air compressor compresses 10 L/S of air at 120 kPa...
An adiabatic air compressor compresses 100 L/S of air at 120 kPa and 20°C to 1000...
An adiabatic air compressor compresses 100 L/S of air at 120 kPa and 20°C to 1000 kPa and 300°C. Determine (a) the work required by the compressor, in kJ/kg, and (b) the power required to drive the air compressor, in kW.
Air enters a compressor operating at steady state at a pressure of 100 kPa, a temperature...
Air enters a compressor operating at steady state at a pressure of 100 kPa, a temperature of 290 K, and with a mass flow rate of 0.72 kg/s. At the exit, the pressure is 700 kPa and the temperature is 450 K. Heat transfer from the compressor to its surroundings occurs at a rate of 3 kW. Kinetic and potential energy changes can be ignored. Determine the power input to the compressor, in kW. Assume that the air is an...
A centrifugal air compressor used in a gas turbine receives air at 100 kPa and 300...
A centrifugal air compressor used in a gas turbine receives air at 100 kPa and 300 K and discharges it at 400 kPa and 500 K. The velocity of the compressor's outgoing air is 100 m / s. Ignoring the speed at the compressor inlet. Determine the power required to drive the compressor, in kW, if the mass flow is 15 kg / s. Take the Cp of air equal to 1 kJ / (kg K) and assume that there...
5-30 Air enters an adiabatic nozzle steadily at 300 kPa, 200°C, and 30 m/s and leaves...
5-30 Air enters an adiabatic nozzle steadily at 300 kPa, 200°C, and 30 m/s and leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 80 cm². Determine (a) the mass flow rate through the nozzle, (b) the exit temperature of the air, and (c) the exit area of the nozzle. Answers: (a) 0.5304 kg/s, (b) 184.6°C, (c) 38.7 cm P = 300 kPa T, = 200°C Vi = 30 m/s A = 80 cm AIR...
An air compressor is operating at a steady state with a mass flow rate of 1.3...
An air compressor is operating at a steady state with a mass flow rate of 1.3 kg/s. The inlet pressure and temperature are P1 171 kPa and T1 319 K, respectively. The exit pressure and temperature are P2 609 kPa and T2 428 K. respectively. Heat lost from the compressor to the surroundings per unit mass flow is 16 kJ/kg. Air can be assumed as an ideal gas. Kinetic and potential energy changes can be neglected. what is the required...
Question 4 2 pts An air compressor, operated at steady state, compresses air from 1 bar...
Question 4 2 pts An air compressor, operated at steady state, compresses air from 1 bar 25°C to 8 bar. At the outlet of the compressor, the air temperature is 90°C. The compressor transfers heat to the surroundings at 200kJ for each kg of air passing through the compressor. The average temperature at which the heat is transferred is 50°C. Which of the following values is closest to the specific entropy production of the compressor process? For air, Cp=1.01 kJ/kgk...
Question 6 Air at the inlet of an ideal (reversible-adiabatic) compressor is at 100 kPa and...
Question 6 Air at the inlet of an ideal (reversible-adiabatic) compressor is at 100 kPa and 2685o. The compressor exit pressure is at 620.4 kPa. Determine the compressor power (kw Calculate the power based on variable specific heats (i.e.,use the ideal gas table for air). Selected Answer Incorrect [None Given] Rgl_e 尻(T) W, m(m-h.) Correct Answer: Correct -47.41% Question 7 Nitrogen gas expands in an adiabatic nozzle from 800 kPa 600x, to a final pressure of 98.26 kPa. Calculate the...
An axial flow compressor operating at steady state draws air through an opening of 0.02 m2...
An axial flow compressor operating at steady state draws air through an opening of 0.02 m2 at a volumetric flow rate of 0.6m3/s, and compresses it from a pressure of 1 atm and a temperature of 17 °C to a pressure of 260 kPa, a velocity of 16 m/s and 144°C at the exit. Heat transfer from the compressor to the surroundings occurs at a rate of 3.2 kJ/kg of air flow. Using the ideal gas model and neglecting potential...
Air enters a turbine in steady flow at 600 kPa, 740 K, and 120 m/s. The...
Air enters a turbine in steady flow at 600 kPa, 740 K, and 120 m/s. The exit conditions are 100 kPa, 450 K, and 220 m/s. A heat loss of 15 kJ/kg occurs, and the inlet area is 4.91 cm2 . Determine (a) the kinetic-energy change, in kJ/kg, (b) the power output, in kW, and (c) the ratio of the inlet- to outletpipe diameters
Air enters the compressor of a gas-turbine engine at 51 kg/min at 128 kPa and 316...
Air enters the compressor of a gas-turbine engine at 51 kg/min at 128 kPa and 316 K and exits at 722 kPa and 555 K. Heat is lost from the compressor at 13 kJ/kg. Determine the power input (in kW to 1 decimal place) required assuming that kinetic energy can be neglected. Take the specific heat of air to be 1.05 kJ/kg.K.
Air enters a compressor operating at steady state at a pressure of 100 kPa, a temperature of 290 K, and with a mass flow rate of 0.72 kg/s. At the exit, the pressure is 700 kPa and the temperature is 450 K. Heat transfer from the compressor to its surroundings occurs at a rate of 3 kW. Kinetic and potential energy changes can be ignored. Determine the power input to the compressor, in kW. Assume that the air is an...
5-30 Air enters an adiabatic nozzle steadily at 300 kPa, 200°C, and 30 m/s and leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 80 cm². Determine (a) the mass flow rate through the nozzle, (b) the exit temperature of the air, and (c) the exit area of the nozzle. Answers: (a) 0.5304 kg/s, (b) 184.6°C, (c) 38.7 cm P = 300 kPa T, = 200°C Vi = 30 m/s A = 80 cm AIR...
An air compressor is operating at a steady state with a mass flow rate of 1.3 kg/s. The inlet pressure and temperature are P1 171 kPa and T1 319 K, respectively. The exit pressure and temperature are P2 609 kPa and T2 428 K. respectively. Heat lost from the compressor to the surroundings per unit mass flow is 16 kJ/kg. Air can be assumed as an ideal gas. Kinetic and potential energy changes can be neglected. what is the required...
Question 4 2 pts An air compressor, operated at steady state, compresses air from 1 bar 25°C to 8 bar. At the outlet of the compressor, the air temperature is 90°C. The compressor transfers heat to the surroundings at 200kJ for each kg of air passing through the compressor. The average temperature at which the heat is transferred is 50°C. Which of the following values is closest to the specific entropy production of the compressor process? For air, Cp=1.01 kJ/kgk...
Question 6 Air at the inlet of an ideal (reversible-adiabatic) compressor is at 100 kPa and 2685o. The compressor exit pressure is at 620.4 kPa. Determine the compressor power (kw Calculate the power based on variable specific heats (i.e.,use the ideal gas table for air). Selected Answer Incorrect [None Given] Rgl_e 尻(T) W, m(m-h.) Correct Answer: Correct -47.41% Question 7 Nitrogen gas expands in an adiabatic nozzle from 800 kPa 600x, to a final pressure of 98.26 kPa. Calculate the...
Most questions answered within 3 hours.
-
Python Program: Design the logic for and implement a program
that merges the two files into...
asked 6 minutes ago -
Human relations refer to the way a company arranges people,
jobs, and communications so that work...
asked 8 minutes ago -
The specific radiocarbon activity of a sample of wood is 6.25
gms dpm/gm of carbon. The...
asked 11 minutes ago -
An aqueous magnesium chloride solution is made by dissolving
6.96 moles of MgCl2 in sufficient water...
asked 14 minutes ago -
Ken believes the average age of men who come to get a haircut at
his barber...
asked 36 minutes ago -
(Ratio Analysis): Last year Co. XYZ had sales of $ 400,000, with
“cost of goods sold”...
asked 44 minutes ago -
can someone please write the balanced chemical
equation for the synthesis of Bromoacetanilide
from;
aniline +...
asked 40 minutes ago -
1. If a corporation purchases land and building and subsequently
tears down the building and uses...
asked 52 minutes ago -
Consider a 23-year bond with 7 percent annual coupon payments.
The market rate (YTM) is 6.4...
asked 55 minutes ago -
a tuba creates a 4th harmonic of frequency 116.5 Hz. what is the
frequency of the...
asked 1 hour ago -
A coconut mass 2kg falls from a 30m tall tree. The coconut falls
and comes to...
asked 1 hour ago -
Group Policies
Research GROUP POLICY OBJECTS (GPO'S)
You can start in the Windows Server 2012 eBook...
asked 1 hour ago