![Question 6 0 out of 10 points A piston-cylinder assembly contains 1.2 kg of air at T1- 300 K and P1 200 kPa. The air is brought to a final temperature of T2 946 K at fixed volume (the piston does not move). Determine the total heat transfer Q (kJ) into the assembly during the process. Note: Use the ideal gas tables for your calculations. Ideal Gas Properties of Air 200 1.00424 199.97 142.56 1.29559 0.3363 1707.1 300 1.00371 300.26 214.15 1.70226 1.3867 621.02 400 1.01358 401.06 286.23 1.99215 3.8069 301.62 500 1.03039 503.21 359.68 2.22003 8.4205 170.45 600 1.05137 607.27435.04 2.40970 16.304105.64 700 1.07431 713.55 512.61 2.57348 28.846 69.661 800 1.09755 822.14 592.50 2.71846 47.799 48.044 900 1.11988933.03 674.68 2.84903 75.330 34.296 1000 1.14053 1046.06 759.01 2.96811 114.06 25.168 1100 1.15904 1161.06 845.30 3.07770 167.08 18.899 1200 1.17526 1277.80 933.33 3.17926 238.00 14.473 13001.18927 1396.04 1022.87 3.27390 330.95 11.276 1400 1.201291515.58 1113.70 3.36249 450.59 8.9190 1500 1.21168 1636.24 1205.66 3.44573 602.17 7.1506 1600 1.22081 1757.88 1298.59 3.52423 791.55 5.8024 1700 1.229061880.38 1392.38 3.59849 1025.3 4.7598 18001.23672 2003.67 1486.97 3.66896 1310.5 3.9427 1900 1.24394 2127.71 1582.30 3.73602 1655.4 3.2947 2000| 1.25067| 2252.44 | 1678.33 | 3.80000| 2068. 7 | 2.7752 2100 1.25661 2377.82 1775.00 3.86117 2560.0 2.3547 2200 1.26113 2503.72 1872.19 3.91974 3139.5 2.0116 2250 1.26256 2566.811920.93 3.94810 3465.5 1.8638 Selected Answer: [None Given] Correct Answer: & 599.19 ± 2%](http://img.homeworklib.com/questions/76ecadb0-67d9-11eb-904c-092facbcbd8a.png?x-oss-process=image/resize,w_560)
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Question 6 0 out of 10 points A piston-cylinder...
1.Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 277°C from a pressure...
1.Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 277°C from a pressure of 5.1 bar to a pressure of 2.7 bar. Evaluate the work, in kJ/kg. 2.Nitrogen (N2) contained in a piston–cylinder arrangement, initially at 9.3 bar and 437 K, undergoes an expansion to a final temperature of 300 K, during which the pressure–volume relationship is pV1.1 = constant. Assuming the ideal gas model for the N2, determine the heat transfer in kJ/kg. 3.Argon contained in...
4. A piston/cylinder contains pure oxygen at ambient conditions 20°C, 100 kPa. The piston is moved...
4. A piston/cylinder contains pure oxygen at ambient conditions 20°C, 100 kPa. The piston is moved to a volume that is seven times smaller than the initial volume in a polytropic process with exponent n = 1.25. Find the final pressure and temperature, the specific work, and the specific heat transfer. Use table A.8 to find the internal energy at each state. Plot the process in a P – v diagram. 300 TABLE A.8 Ideal Gas Properties of Various Substances,...
C only please Question 1 (50 points) One kg of air is in a piston-cylinder assembly....
C
only please
Question 1 (50 points) One kg of air is in a piston-cylinder assembly. Air is modeled as an ideal gas with a constant specific heat ratio, k = 1.4. The air undergoes a power cycle consisting of four processes in series: Process 1-2: Constant-temperature expansion at 600 K from P, = 0.5 MPa to P2 = 0.4 MPa Process 2–3: Polytropic expansion with n=k to Pz = 0.3 MPa Process 3-4: Constant-pressure compression to V4 = V....
Need help with Thermodynamics Homework. WILL RATE HIGH! Thank you! Please answer them all for high...
Need help with Thermodynamics Homework. WILL RATE HIGH! Thank you! Please answer them all for high rate 1. Carbon Oxide (CO) initially occupying 2.9 m3 at 7.4 bar, 246.85°C undergoes an internally reversible expansion during which pV1.4 = constant to a final state where the temperature is 36.85°C. Assuming the ideal gas model, determine the entropy change, in Joules/K. 2. Water at 10 bar, 240°C enters a turbine operating at steady state and exits at 4 bar. Stray heat transfer...
5) Evaluating Changes in Entropy for an Ideal Gas Air enters a turbine at 427 °C and 1 MPa and ex...
5) Evaluating Changes in Entropy for an Ideal Gas Air enters a turbine at 427 °C and 1 MPa and exits at 127 °C. The outlet pressure can be tuned by the operator in the range from 300 - 800 kPa. Determine the change in specific entropy of the air, se -si, as it flows through this turbine 3 ways a) Assuming constant specific heats. b) Integrating an appropriate formula from Table A-2(c) from the text, which gives a polynomial...
QUESTION 6 (5+5+5+5 = 20 marks) Microalloyed steels are an important class of steels used extensively...
QUESTION 6 (5+5+5+5 = 20 marks) Microalloyed steels are an important class of steels used extensively by the automotive industry. The two most important contributions to the yield strength of these alloys are the strengthening by precipitates in the form of alloy carbides and the strengthening by ferrite grain size refinement. Consider a typical Nb microalloyed alloy composition: Fe-0.1C-1Mn-0.1Nb (wt. %). These alloys are hot rolled in the austenitic condition and then air cooled from elevated temperature. Figure 1 below...
174 2 combustor , =1500 K Problem 2 (22 pts): Brayton cycle and entropy calculations An...
174 2 combustor , =1500 K Problem 2 (22 pts): Brayton cycle and entropy calculations An open Brayton cycle is used to generate electricity. Air enters the isentropic compressor at T1 = 300 K and P1 = 100 kPa with a mass flow rate m = 1.5 kg/s. The combustor can be modeled as a constant-pressure heat exchanger, supplying 1540 kW of thermal power to the air from a thermal reservoir (Th = 1750 K). Air enters the isentropic turbine...
5. The Martian atmosphere consists mainly of carbon dioxide with an average surface pressure of 700....
5. The Martian atmosphere consists mainly of carbon dioxide with an average surface pressure of 700. Pa and an average temperature of -57 °C. A piston-based compressor is being designed to take ambient Martian gas and increase the pressure to 2.2 bar before it is processed for rocket fuel. CO2 is not CPG at these conditions -- you can assume it to ONLY be a TPG gas. a. Assuming the Mars atmosphere is pure CO2 and the compression process is...
Known Answer: W12=-51.0 Btu, constant Cv: Q12= -19.2 Btu, Table A-22E: Q12=-18.8 Btu....... Please explain in...
Known Answer: W12=-51.0 Btu, constant Cv: Q12= -19.2 Btu, Table
A-22E: Q12=-18.8 Btu....... Please explain in detail how to use the
table.
3.145 Air is compressed in a piston-cylinder assembly from pi = 10 lbf/in?, T1 = 500°R to a final volume of K2 = 1 ft in a process described by pun = constant, where n= 1.25. The mass of air is 1/2 lbm. Assuming ideal gas behavior and neglecting kinetic and potential energy effects, determine the work and...
I need your help solving this thermodynamics problem please: Question Completion Status: QUESTION 1 20 points...
I
need your help solving this thermodynamics problem please:
Question Completion Status: QUESTION 1 20 points Save Ans The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers...
4. A piston/cylinder contains pure oxygen at ambient conditions 20°C, 100 kPa. The piston is moved to a volume that is seven times smaller than the initial volume in a polytropic process with exponent n = 1.25. Find the final pressure and temperature, the specific work, and the specific heat transfer. Use table A.8 to find the internal energy at each state. Plot the process in a P – v diagram. 300 TABLE A.8 Ideal Gas Properties of Various Substances,...
C
only please
Question 1 (50 points) One kg of air is in a piston-cylinder assembly. Air is modeled as an ideal gas with a constant specific heat ratio, k = 1.4. The air undergoes a power cycle consisting of four processes in series: Process 1-2: Constant-temperature expansion at 600 K from P, = 0.5 MPa to P2 = 0.4 MPa Process 2–3: Polytropic expansion with n=k to Pz = 0.3 MPa Process 3-4: Constant-pressure compression to V4 = V....
5) Evaluating Changes in Entropy for an Ideal Gas Air enters a turbine at 427 °C and 1 MPa and exits at 127 °C. The outlet pressure can be tuned by the operator in the range from 300 - 800 kPa. Determine the change in specific entropy of the air, se -si, as it flows through this turbine 3 ways a) Assuming constant specific heats. b) Integrating an appropriate formula from Table A-2(c) from the text, which gives a polynomial...
QUESTION 6 (5+5+5+5 = 20 marks) Microalloyed steels are an important class of steels used extensively by the automotive industry. The two most important contributions to the yield strength of these alloys are the strengthening by precipitates in the form of alloy carbides and the strengthening by ferrite grain size refinement. Consider a typical Nb microalloyed alloy composition: Fe-0.1C-1Mn-0.1Nb (wt. %). These alloys are hot rolled in the austenitic condition and then air cooled from elevated temperature. Figure 1 below...
174 2 combustor , =1500 K Problem 2 (22 pts): Brayton cycle and entropy calculations An open Brayton cycle is used to generate electricity. Air enters the isentropic compressor at T1 = 300 K and P1 = 100 kPa with a mass flow rate m = 1.5 kg/s. The combustor can be modeled as a constant-pressure heat exchanger, supplying 1540 kW of thermal power to the air from a thermal reservoir (Th = 1750 K). Air enters the isentropic turbine...
5. The Martian atmosphere consists mainly of carbon dioxide with an average surface pressure of 700. Pa and an average temperature of -57 °C. A piston-based compressor is being designed to take ambient Martian gas and increase the pressure to 2.2 bar before it is processed for rocket fuel. CO2 is not CPG at these conditions -- you can assume it to ONLY be a TPG gas. a. Assuming the Mars atmosphere is pure CO2 and the compression process is...
Known Answer: W12=-51.0 Btu, constant Cv: Q12= -19.2 Btu, Table
A-22E: Q12=-18.8 Btu....... Please explain in detail how to use the
table.
3.145 Air is compressed in a piston-cylinder assembly from pi = 10 lbf/in?, T1 = 500°R to a final volume of K2 = 1 ft in a process described by pun = constant, where n= 1.25. The mass of air is 1/2 lbm. Assuming ideal gas behavior and neglecting kinetic and potential energy effects, determine the work and...
I
need your help solving this thermodynamics problem please:
Question Completion Status: QUESTION 1 20 points Save Ans The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers...
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