Steam enters a steady-flow device at 1 MPa, 300 oC and leaves as a saturated vapor...
Steam enters a steady-flow device at 1 MPa, 300 oC and leaves as a saturated vapor at 90 kPa. What is the change in the specific flow work (in kJ/kg) caused by this device?
Please State any PV diagrams, rules, statements, or tables used
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Steam enters a steady-flow device at 1 MPa, 300 oC and leaves as
a saturated vapor...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first turbine stage at 6 MPa, 540 °C. Between the first and second stages, 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 5 x 108 kl/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kl/kg and is mixed with liquid exiting the lower pressure pump at 450 kPa. The entire...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first turbine stage at 6 MPa, 540 °C. Between the first and second stages, 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 5 x 108 kl/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kl/kg and is mixed with liquid exiting the lower pressure pump at 450 kPa. The entire...
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Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a quality of 0.9 and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.3 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30oC and exits at 60oC. The ideal gas model with cp = 1.005 kJ/kg·K can be assumed for air. Kinetic and potential energy effects are negligible. Determine the temperature of...
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Problem 2: (50 points) Steam is the work Saturated vapor enters the turbine at (50 points) Steam is the working fluid in an ideal Rankine cycle. ated vapor enters the turbine at BO MPa and saturated liquid exits the ser at a pressure of 0.006 MPa. The not power output of the cycle is 500 MW.Also he = 1812.2 kJ/kg and he 157.56 kJ/kg a. Thermal Efficiency (30 points) b. Mass flow rate in kg/h (20 points) c. Bonus: Qin...
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Superheated steam at 20 MPa, 560oC enters the turbine of a vapor power plant. The pressure...
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761 Steam enters a turbine operating at steady state at 4 MPa, 500 C with a...
761 Steam enters a turbine operating at steady state at 4 MPa, 500 C with a mass flow rate of 50 kg/s Saturated vapor exits at 10 kPa and the corresponding power developed is 42 MW The effects of motion and gravity negligible. are (a) For a control volume enclosing the turbine, determine the rale of heat Iransfer, in MW, from the turbine to its surrmundings Asuming 50°C. determine the rate of exergy destruction, in MW (b) If the turbine...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first turbine stage at 6 MPa, 540 °C. Between the first and second stages, 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 5 x 108 kl/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kl/kg and is mixed with liquid exiting the lower pressure pump at 450 kPa. The entire...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first turbine stage at 6 MPa, 540 °C. Between the first and second stages, 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 5 x 108 kl/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kl/kg and is mixed with liquid exiting the lower pressure pump at 450 kPa. The entire...
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...
Problem 2: (50 points) Steam is the work Saturated vapor enters the turbine at (50 points) Steam is the working fluid in an ideal Rankine cycle. ated vapor enters the turbine at BO MPa and saturated liquid exits the ser at a pressure of 0.006 MPa. The not power output of the cycle is 500 MW.Also he = 1812.2 kJ/kg and he 157.56 kJ/kg a. Thermal Efficiency (30 points) b. Mass flow rate in kg/h (20 points) c. Bonus: Qin...
761 Steam enters a turbine operating at steady state at 4 MPa, 500 C with a mass flow rate of 50 kg/s Saturated vapor exits at 10 kPa and the corresponding power developed is 42 MW The effects of motion and gravity negligible. are (a) For a control volume enclosing the turbine, determine the rale of heat Iransfer, in MW, from the turbine to its surrmundings Asuming 50°C. determine the rate of exergy destruction, in MW (b) If the turbine...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
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