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Nitrogen is expanded from 2000 kPa and 500°C to 100 kPa and 50°C. Assuming constant specific...
4) An ideal-gas mixture of helium and nitrogen with a nitrogen mass fraction of 35 percent...
4) An ideal-gas mixture of helium and nitrogen with a nitrogen mass fraction of 35 percent is contained in a piston-cylinder device arranged to maintain a fixed pressure of 700 kPa. The mixture is heated from 300 K to 500 K a. Determine the molar mass and gas constant for the mixture. b. Determine the work produced, in kJ/kg. (Hint: Try finding the specific c. Determine the constant-volume and constant-pressure specific heats (Answer: 5.72 kg/kmol, 1.45 kJ/kg K) volumes at...
Steam at 500°C and 600 kPa is throttled to 100 kPa. Determine the entropy generation (in...
Steam at 500°C and 600 kPa is throttled to 100 kPa. Determine the entropy generation (in kJ/kgK) during the throttling process. Select one: a. O kJ/kgk cross out b. -0.0180 kJ/kgK cross out cross out C. 0.223 kJ/kgK d. 0.577 kJ/kgK e. 0.823 kJ/kgk cross out o cross out
1 kg/s of steam with P = 1 MPa and x = 50% enters is expanded through a valve to 100 kPa. Find th...
1 kg/s of steam with P = 1 MPa and x = 50% enters is expanded through a valve to 100 kPa. Find the final temperature (°C) and entropy generated (kl/kgK)
1 kg/s of steam with P = 1 MPa and x = 50% enters is expanded through a valve to 100 kPa. Find the final temperature (°C) and entropy generated (kl/kgK)
Nitrogen in a piston cylinder device occupies 0.5 m3 at 100 kPa and 20 °C. It undergoes a compres...
Nitrogen in a piston cylinder device occupies 0.5 m3 at 100 kPa and 20 °C. It undergoes a compression process (during which PV1.30-constant) to a final state where the temperature is 200 °C. The specific heats are assumed to be constant while Tsur - 15 C a) Prove that the gas, at state 1, can be treated as an ideal gas. b) Find the pressure and volume at state 2 c) Find the heat transfer, in kJ. d) Find the...
Air enters an adiabatic nozzle at 500 kPa and a temperature of 200 °C with a...
Air enters an adiabatic nozzle at 500 kPa and a temperature of 200 °C with a velocity of 100 m/s. It exits the nozzle at a pressure of 100 kPa. Assuming that the expansion through the nozzle occurs reversibly, determine (a) the exit temperature and (b) the exit velocity of the air. The specific heats of air can be assumed to be constant with Cv = 0.742 kJ/kg oC and Cp = 1.029 kJ/kg oC.
4. An ideal gas with constant specific heats undergoes a process from an initial pressure of...
4. An ideal gas with constant specific heats undergoes a process from an initial pressure of 50 kPa and initial specific volume of 4 m^3/kg to a final pressure of 80 kPa and final specific volume of 5 m^3/kg. The mass of the carbon monoxide is 3 kg. The gas has a molar mass of 44 kg/kmol and a specific heat at constant volume of 0.98 kJ/(kg∙K). Determine the entropy change of the gas during the process in kJ/K.
A piston-cylinder device contains 0.78 kg of nitrogen gas at 140 kPa and 37°C. The gas...
A piston-cylinder device contains 0.78 kg of nitrogen gas at 140 kPa and 37°C. The gas is now compressed slowly in a polytropic process during which PV1.3 = constant. The process ends when the volume is reduced by one-half. Determine the entropy change of nitrogen during this process. The gas constant of nitrogen is R= 0.2968 kJ/kg-K. The constant volume specific heat of nitrogen at room temperature is Cr=0.743 kJ/kg-K. (Round the final answer to five decimal places.) The entropy...
A piston-cylinder device contains 0.63 kg of nitrogen gas at 140 kPa and 37°C. The gas...
A piston-cylinder device contains 0.63 kg of nitrogen gas at 140 kPa and 37°C. The gas is now compressed slowly in a polytropic process during which PV1.3. constant. The process ends when the volume is reduced by one-halt. Determine the entropy change of nitrogen during this process. The gas constant of nitrogen is R-0.2968 kJ/kg K. The constant volume specific heat of nitrogen at room temperature is C -0.743 kJ/kg K. (Round the final answer to five decimal places.) The...
3 kg of nitrogen gas initially at a temp: 295K and a pressure of 100 kPa...
3 kg of nitrogen gas initially at a temp: 295K and a pressure of 100 kPa is compressed to a higher pressure. the internal energy change during this process is 70 kJ/kg. Determine the final temperature of the nitrogen. perform two iterations with average specific heats. Please use ideal gas law PV=nRT if possible ** Please answer both questions for quick thumbs up and comment!!! 1) 2) Find the final temp of the gas Perform two iterations using average specifc...
Example 5 Helium is expanded in a turbine from 1500 kPa and 300°C to 100 kPa...
Example 5 Helium is expanded in a turbine from 1500 kPa and 300°C to 100 kPa and 25°C. Determine the maximum work this turbine can produce, in kJ/kg. Does the maximum work require an adiabatic turbine?
4) An ideal-gas mixture of helium and nitrogen with a nitrogen mass fraction of 35 percent is contained in a piston-cylinder device arranged to maintain a fixed pressure of 700 kPa. The mixture is heated from 300 K to 500 K a. Determine the molar mass and gas constant for the mixture. b. Determine the work produced, in kJ/kg. (Hint: Try finding the specific c. Determine the constant-volume and constant-pressure specific heats (Answer: 5.72 kg/kmol, 1.45 kJ/kg K) volumes at...
Steam at 500°C and 600 kPa is throttled to 100 kPa. Determine the entropy generation (in kJ/kgK) during the throttling process. Select one: a. O kJ/kgk cross out b. -0.0180 kJ/kgK cross out cross out C. 0.223 kJ/kgK d. 0.577 kJ/kgK e. 0.823 kJ/kgk cross out o cross out
1 kg/s of steam with P = 1 MPa and x = 50% enters is expanded through a valve to 100 kPa. Find the final temperature (°C) and entropy generated (kl/kgK)
1 kg/s of steam with P = 1 MPa and x = 50% enters is expanded through a valve to 100 kPa. Find the final temperature (°C) and entropy generated (kl/kgK)
Nitrogen in a piston cylinder device occupies 0.5 m3 at 100 kPa and 20 °C. It undergoes a compression process (during which PV1.30-constant) to a final state where the temperature is 200 °C. The specific heats are assumed to be constant while Tsur - 15 C a) Prove that the gas, at state 1, can be treated as an ideal gas. b) Find the pressure and volume at state 2 c) Find the heat transfer, in kJ. d) Find the...
A piston-cylinder device contains 0.78 kg of nitrogen gas at 140 kPa and 37°C. The gas is now compressed slowly in a polytropic process during which PV1.3 = constant. The process ends when the volume is reduced by one-half. Determine the entropy change of nitrogen during this process. The gas constant of nitrogen is R= 0.2968 kJ/kg-K. The constant volume specific heat of nitrogen at room temperature is Cr=0.743 kJ/kg-K. (Round the final answer to five decimal places.) The entropy...
A piston-cylinder device contains 0.63 kg of nitrogen gas at 140 kPa and 37°C. The gas is now compressed slowly in a polytropic process during which PV1.3. constant. The process ends when the volume is reduced by one-halt. Determine the entropy change of nitrogen during this process. The gas constant of nitrogen is R-0.2968 kJ/kg K. The constant volume specific heat of nitrogen at room temperature is C -0.743 kJ/kg K. (Round the final answer to five decimal places.) The...
3 kg of nitrogen gas initially at a temp: 295K and a pressure of 100 kPa is compressed to a higher pressure. the internal energy change during this process is 70 kJ/kg. Determine the final temperature of the nitrogen. perform two iterations with average specific heats. Please use ideal gas law PV=nRT if possible ** Please answer both questions for quick thumbs up and comment!!! 1) 2) Find the final temp of the gas Perform two iterations using average specifc...
Example 5 Helium is expanded in a turbine from 1500 kPa and 300°C to 100 kPa and 25°C. Determine the maximum work this turbine can produce, in kJ/kg. Does the maximum work require an adiabatic turbine?
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