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1. Two power cycles are shown to the same scale in the figure below. Each consists...
For parts a) through e), consider the two power cycles shown in the diagram at the...
For parts a) through e), consider the two power cycles shown in the diagram at the right, Cycle A: 1-2-3-4, and Cycle B: 1-2-3-4'. a) (2pts) Which of the two cycles has a higher thermal efficiency? b) (2pts) Which of the two cycles has a higher turbine outlet quality? c) (2pts) Are the cycles shown reversible or irreversible? d) (2pts) For either cycle, would superheating the vapor at state 1 increase or decrease the cycle efficiency? e) (2pts) For either...
For the two cycles, A and B. shown in the figure, which of the statements are...
For the two cycles, A and B. shown in the figure, which of the statements are true (Mark T) or false (Mark F). Mark all of them TA 5 TH 6 A B T 4 8 The thermal efficiency of B is less than the thermal efficiency of A; b. The cycle A produces more net work than cycle B; c. The cycle A rejects more heat than cycle B; d. The process 5 - 6 is a reversible isobaric...
Problem 1 (10 points). Consider a newly invented power cyclic device performing a power cycle whi...
Problem 1 (10 points). Consider a newly invented power cyclic device performing a power cycle while interacting with two thermal reservoirs. The device absorbs 2000 kJ from the hight temperature reservoir at 1000 K, and releases certain amount of heat to the low temperature reservoir at 500 K. Now consider three claims on its thermal efficiency or per ormance: η 70, η 0%, and Y-40%. (a, 4 points) Formulate the entropy production for the cyclic process in terms of the...
A combined cycle power plant consists of two gas turbines; cach produces a net power of...
A combined cycle power plant consists of two gas turbines; cach produces a net power of 160 MW, and a 70 MW steam power cycle. The combustion of the fuel in the combustion chamber produces hot gases at 1400°C. The hot gases leaving the gas turbines are used to generate steam through the heat recovery steam generator (Boiler). The hot gases enter the heat recovery steam generator at 880°C and leaves at 660°C. Water enters the isentropic pump as saturated...
step by step explanation please 04. (a) A heat engine, as shown in in Figure Q4,...
step by step explanation please
04. (a) A heat engine, as shown in in Figure Q4, is operating on a Carnot cycle and has a thermal efficiency of 65%. The waste heat from this engine is rejected to a nearby lake with a temperature of 10°C at a rate of 900 kJ/min High Temperature Reservoir Q, Carnot Heat Engine a =9(0 kJ/min Low Temperature Reservoir T 10°C Figure Q4. Carnot heat engine in kW (i) Determine the net power output...
2 Thermodynamics Equations (Cycles) • Solve the following problems from the textbook (Thermodynamics: An Engineering Approach,...
2
Thermodynamics Equations (Cycles)
• Solve the following problems from the textbook (Thermodynamics: An Engineering Approach, by Yunus A. Cengel and Michael A. Boles, 8th Edition, SI Version, 2015): Gas Power Cycles: Obtain problem statements from the textbook Air-Standard Cycles (Otto Cycles) Problems No.: 9-32 An ideal Otto cyele has a compression ratio of 8. At the beginning of the compression process, air at 95 kPa and 27°C, and 750 kJ/kg of heat is transferred to air during the constant-...
A system executes a power cycle while receiving heat transfer at a temperature of 1000 K...
A system executes a power cycle while receiving heat transfer at a temperature of 1000 K and discharging 1000 kJ by heat transfer at a temperature of 450 K. There are ho other heat transfers. Appling the lausus Inequality, determine entropy generation, if the thermal efficiency is 50%. Also comment if the cycle is 15. Extra-credit (10 Pts.) reversible, irreversible, or impossible? Explain your reasoning. press entropy balance using heat engine efficiency in terms of O's. Remember this is not...
The figure (Figure 1)shows the cycle for a heat engine that uses a gas having γ...
The figure (Figure 1)shows the cycle for a heat engine that uses
a gas having γ =1.25. The initial temperature is T1 =300K, and this
engine operates at 30 cycles per second.
HW21 Item 13 Review Part A The figure (Figure 1)shows the cycle for a heat engine that uses a gas having γ = 1.25. The initial temperature is T1 = 300 K, and this engine operates at 30 cycles per second What is the power output of the...
Consider a steam power plant which operates on the simple ideal Rankine cycle (shown in the...
Consider a steam power plant which operates on the simple ideal
Rankine cycle (shown in the next page), where the boiler pressure
is 3 MPa and the condenser saturation temperature is 50°C. The
temperature at the exit of the boiler is 500°C. Water leaves the
condenser as a saturated liquid. The mass flow rate through each
component is 15 kg/s. Calculate:
1. The power output of the steam power plant
2. The thermal efficiency of the steam power plant
Now,...
For parts a) through e), consider the two power cycles shown in the diagram at the right, Cycle A: 1-2-3-4, and Cycle B: 1-2-3-4'. a) (2pts) Which of the two cycles has a higher thermal efficiency? b) (2pts) Which of the two cycles has a higher turbine outlet quality? c) (2pts) Are the cycles shown reversible or irreversible? d) (2pts) For either cycle, would superheating the vapor at state 1 increase or decrease the cycle efficiency? e) (2pts) For either...
For the two cycles, A and B. shown in the figure, which of the statements are true (Mark T) or false (Mark F). Mark all of them TA 5 TH 6 A B T 4 8 The thermal efficiency of B is less than the thermal efficiency of A; b. The cycle A produces more net work than cycle B; c. The cycle A rejects more heat than cycle B; d. The process 5 - 6 is a reversible isobaric...
Problem 1 (10 points). Consider a newly invented power cyclic device performing a power cycle while interacting with two thermal reservoirs. The device absorbs 2000 kJ from the hight temperature reservoir at 1000 K, and releases certain amount of heat to the low temperature reservoir at 500 K. Now consider three claims on its thermal efficiency or per ormance: η 70, η 0%, and Y-40%. (a, 4 points) Formulate the entropy production for the cyclic process in terms of the...
A combined cycle power plant consists of two gas turbines; cach produces a net power of 160 MW, and a 70 MW steam power cycle. The combustion of the fuel in the combustion chamber produces hot gases at 1400°C. The hot gases leaving the gas turbines are used to generate steam through the heat recovery steam generator (Boiler). The hot gases enter the heat recovery steam generator at 880°C and leaves at 660°C. Water enters the isentropic pump as saturated...
step by step explanation please
04. (a) A heat engine, as shown in in Figure Q4, is operating on a Carnot cycle and has a thermal efficiency of 65%. The waste heat from this engine is rejected to a nearby lake with a temperature of 10°C at a rate of 900 kJ/min High Temperature Reservoir Q, Carnot Heat Engine a =9(0 kJ/min Low Temperature Reservoir T 10°C Figure Q4. Carnot heat engine in kW (i) Determine the net power output...
2
Thermodynamics Equations (Cycles)
• Solve the following problems from the textbook (Thermodynamics: An Engineering Approach, by Yunus A. Cengel and Michael A. Boles, 8th Edition, SI Version, 2015): Gas Power Cycles: Obtain problem statements from the textbook Air-Standard Cycles (Otto Cycles) Problems No.: 9-32 An ideal Otto cyele has a compression ratio of 8. At the beginning of the compression process, air at 95 kPa and 27°C, and 750 kJ/kg of heat is transferred to air during the constant-...
A system executes a power cycle while receiving heat transfer at a temperature of 1000 K and discharging 1000 kJ by heat transfer at a temperature of 450 K. There are ho other heat transfers. Appling the lausus Inequality, determine entropy generation, if the thermal efficiency is 50%. Also comment if the cycle is 15. Extra-credit (10 Pts.) reversible, irreversible, or impossible? Explain your reasoning. press entropy balance using heat engine efficiency in terms of O's. Remember this is not...
The figure (Figure 1)shows the cycle for a heat engine that uses
a gas having γ =1.25. The initial temperature is T1 =300K, and this
engine operates at 30 cycles per second.
HW21 Item 13 Review Part A The figure (Figure 1)shows the cycle for a heat engine that uses a gas having γ = 1.25. The initial temperature is T1 = 300 K, and this engine operates at 30 cycles per second What is the power output of the...
Consider a steam power plant which operates on the simple ideal
Rankine cycle (shown in the next page), where the boiler pressure
is 3 MPa and the condenser saturation temperature is 50°C. The
temperature at the exit of the boiler is 500°C. Water leaves the
condenser as a saturated liquid. The mass flow rate through each
component is 15 kg/s. Calculate:
1. The power output of the steam power plant
2. The thermal efficiency of the steam power plant
Now,...
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