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In an isobaric process, 1 litre of compressed liquid water at p 10 MPa, T 40°C...
4. (4 points) Liquid water enters a steady-state heat exchanger at P 1 MPa and T-353.15...
4. (4 points) Liquid water enters a steady-state heat exchanger at P 1 MPa and T-353.15 K, and exits as saturated water vapor at P-1 MPa A. Using the steam tables, find the change in specific enthalpy for this process. B. Using the approximation that Cp-4.19 kJ/kg-K for liquid water, find the change in enthalpy when liquid water is heated from 353.15 K to its boiling point at P 1 MPa. C. How do the answers to parts A and...
17. Determine the specific enthalpy of liquid water at 100°C and 10 MPa, a. By using...
17. Determine the specific enthalpy of liquid water at 100°C and 10 MPa, a. By using a compressed liquid table. b. By approximating it as a saturated liquid. c. Determine the % of error involved in using the approximation rule. a. 426.62 kJ/kg, b. 419.17kJ/kg, c. 1.75 a. 426.62 kJ/kg, b. 419.17kJ/kg, C. 0.75 a. 426.62 J/kg, b. 419.17J/kg, c. 1.75
Steam at 10 MPa, 600 'C is throttled to 1 MPa, and fed into an adiabatic...
Steam at 10 MPa, 600 'C is throttled to 1 MPa, and fed into an adiabatic mixing chamber where it is mixed with compressed liquid water at 1 MPa, 50 C. The exiting mass flow is 100 kg/s of saturated liquid at 1 MPa. For steady state operation, determine a) te mass flows of steam and liquid that enter, b) the rate of entropy generation due to throttling, and the rate of entropy generation due to mixing, c) te associa...
A piston-cylinder device contains 10 kg of saturated water liquid at 0.4 MPa. Heat is transferred...
A piston-cylinder device contains 10 kg of saturated water liquid at 0.4 MPa. Heat is transferred at constant pressure until the temperature reaches 400 °C. (68 marks) a) Show the process on a P-v diagram with respect to the saturation line? b) What is the initial temperature of the system? c) What is the initial quality x? d) What is the initial specific enthalpy of the system? e) Determine the initial total volume of the system. f) What is the...
A piston–cylinder device contains steam initially at 1 MPa, 450°C. Steam is allowed to cool at...
A piston–cylinder device contains steam initially at 1 MPa, 450°C. Steam is allowed to cool at constant pressure until it becomes saturated vapor. Find the internal energy (u) on the initial and final states. Find the specific volume (v) on the initial and final states. Find the boundary work associated with the transformation. Write the conservation of energy equation, and simplify it. Deduce the amount of heat transferred per unit mass. Represent the process on P-v diagram, showing the saturation...
90 Chapter 2 PROPERTIES OF SUBSTANCES for all Pages Due 03/19/2020 start b. x=0.2, P =...
90 Chapter 2 PROPERTIES OF SUBSTANCES for all Pages Due 03/19/2020 start b. x=0.2, P = 100 kPa C C c. P-2 MPa, T = 400°C 2-41) Calculate the mass of water contained in a 0.6-mº vessel under the following conditions: a. 100 kPa, 150°C b. 300 kPa, 600°C c. 50 kPa, 81°C d. 400 kPa, saturated vapor e. 400 kPa, saturated liquid f. At the critical state 2-42. Determine the internal energy of H.O at 10 MPa and 450°C....
S Q. Find the entropy and/or temperature of steam at the following states Region k/kg K) 5 MPa 1 ...
s Q. Find the entropy and/or temperature of steam at the following states Region k/kg K) 5 MPa 1 MPa 18 MPa 400°C 40 kPa 40 kPa 120°C 50°C Quality, x-09, Mixed 71794 (<7.6700) Q. Determine the entropy change of water contained in a closed system as it changes phase rom saturated liquid to saturated vapor when the pressure is 0.1MPa and constant Why is the entropy change positive for this process? 2. Steam at 1 MPa, 6000C expands in...
laborate wed Victoria University ve NEM2201 THERMODYNAMICS 1 Writing time - 50 minutes Session 3 test...
laborate wed Victoria University ve NEM2201 THERMODYNAMICS 1 Writing time - 50 minutes Session 3 test QUESTION 1 a) What are extensive and intensive properties? Give some examples (4 marks) b) What are the isothermal and isobaric processes? (4 marks) c) What are the qualities x for saturated liquid and saturated vapor, respectively? (4 marks) d) What is the difference between saturated vapor and superheated vapor? (4 marks) QUESTION 2 A piston-cylinder device contains 5 kg of saturated water liquid...
Two components of a steam engine are shown in the figure below. The turbine is adiabatic. 2 boiler turbine m5 kg/s P 8.0 MPa 1-0 T2 300°C 2.5 m3/kg -0.06 MPa The properties of saturated water are giv...
Two components of a steam engine are shown in the figure below. The turbine is adiabatic. 2 boiler turbine m5 kg/s P 8.0 MPa 1-0 T2 300°C 2.5 m3/kg -0.06 MPa The properties of saturated water are given in Appendix 1. 1) Applying the first law of thermodynamics to the turbine, develop an expression for the power ou W. Justify all your assumptions and show all the steps of your calculation 2) What is the phase of the water at...
Steam in a 2 m rigid sealed vessel is initially at P,=1 MPa, T.-500 °C. The...
Steam in a 2 m rigid sealed vessel is initially at P,=1 MPa, T.-500 °C. The steam undergoes an isochorie process until the final pressure P2-200 kPa. The specific internal energy and the specific entropy at state 2 are respectively u21092.5 kJ/kg and s2- 3.198 kJ/kg-K. 1 Tsing your stram tahle read the values of the following properties: 4. Compute the mass of steam in the vessel in kg 5. For the system, compute the specific exergy change as, A0-01-02...
4. (4 points) Liquid water enters a steady-state heat exchanger at P 1 MPa and T-353.15 K, and exits as saturated water vapor at P-1 MPa A. Using the steam tables, find the change in specific enthalpy for this process. B. Using the approximation that Cp-4.19 kJ/kg-K for liquid water, find the change in enthalpy when liquid water is heated from 353.15 K to its boiling point at P 1 MPa. C. How do the answers to parts A and...
17. Determine the specific enthalpy of liquid water at 100°C and 10 MPa, a. By using a compressed liquid table. b. By approximating it as a saturated liquid. c. Determine the % of error involved in using the approximation rule. a. 426.62 kJ/kg, b. 419.17kJ/kg, c. 1.75 a. 426.62 kJ/kg, b. 419.17kJ/kg, C. 0.75 a. 426.62 J/kg, b. 419.17J/kg, c. 1.75
Steam at 10 MPa, 600 'C is throttled to 1 MPa, and fed into an adiabatic mixing chamber where it is mixed with compressed liquid water at 1 MPa, 50 C. The exiting mass flow is 100 kg/s of saturated liquid at 1 MPa. For steady state operation, determine a) te mass flows of steam and liquid that enter, b) the rate of entropy generation due to throttling, and the rate of entropy generation due to mixing, c) te associa...
A piston-cylinder device contains 10 kg of saturated water liquid at 0.4 MPa. Heat is transferred at constant pressure until the temperature reaches 400 °C. (68 marks) a) Show the process on a P-v diagram with respect to the saturation line? b) What is the initial temperature of the system? c) What is the initial quality x? d) What is the initial specific enthalpy of the system? e) Determine the initial total volume of the system. f) What is the...
90 Chapter 2 PROPERTIES OF SUBSTANCES for all Pages Due 03/19/2020 start b. x=0.2, P = 100 kPa C C c. P-2 MPa, T = 400°C 2-41) Calculate the mass of water contained in a 0.6-mº vessel under the following conditions: a. 100 kPa, 150°C b. 300 kPa, 600°C c. 50 kPa, 81°C d. 400 kPa, saturated vapor e. 400 kPa, saturated liquid f. At the critical state 2-42. Determine the internal energy of H.O at 10 MPa and 450°C....
s Q. Find the entropy and/or temperature of steam at the following states Region k/kg K) 5 MPa 1 MPa 18 MPa 400°C 40 kPa 40 kPa 120°C 50°C Quality, x-09, Mixed 71794 (<7.6700) Q. Determine the entropy change of water contained in a closed system as it changes phase rom saturated liquid to saturated vapor when the pressure is 0.1MPa and constant Why is the entropy change positive for this process? 2. Steam at 1 MPa, 6000C expands in...
laborate wed Victoria University ve NEM2201 THERMODYNAMICS 1 Writing time - 50 minutes Session 3 test QUESTION 1 a) What are extensive and intensive properties? Give some examples (4 marks) b) What are the isothermal and isobaric processes? (4 marks) c) What are the qualities x for saturated liquid and saturated vapor, respectively? (4 marks) d) What is the difference between saturated vapor and superheated vapor? (4 marks) QUESTION 2 A piston-cylinder device contains 5 kg of saturated water liquid...
Two components of a steam engine are shown in the figure below. The turbine is adiabatic. 2 boiler turbine m5 kg/s P 8.0 MPa 1-0 T2 300°C 2.5 m3/kg -0.06 MPa The properties of saturated water are given in Appendix 1. 1) Applying the first law of thermodynamics to the turbine, develop an expression for the power ou W. Justify all your assumptions and show all the steps of your calculation 2) What is the phase of the water at...
Steam in a 2 m rigid sealed vessel is initially at P,=1 MPa, T.-500 °C. The steam undergoes an isochorie process until the final pressure P2-200 kPa. The specific internal energy and the specific entropy at state 2 are respectively u21092.5 kJ/kg and s2- 3.198 kJ/kg-K. 1 Tsing your stram tahle read the values of the following properties: 4. Compute the mass of steam in the vessel in kg 5. For the system, compute the specific exergy change as, A0-01-02...
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