A quantity of water within a piston-cylinder assembly executes a Carnot power cycle. Duringisothermal expansion, the water is heated from saturated liquid at 45 bar until it is a saturatedvapor. The vapor then expands adiabatically to a pressure of 2 bar.(1) Sketch the cycle on a P-v diagram.(2) Evaluate the work per unit mass (W/m) and heat transfer per unit mass (Q/m) for process 4-1(Isothermal Expansion), in kJ/kg.(3) Evaluate the thermal efficiency.

Answered: Image /qna-images/answer/76c0e3c1-f171-4167-b25f-063fa7737ec7.jpg

Answered: A quantity of water within a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Shown below is P-V diagram for a reversible cycle enclosed by 4 reversible process curves. The curve 1-2 and the curve 3-4 are reversible isothermal processes, and the curve 2-3 and the curve 1-4 are reversible adiabatic processes. If the cycle direction is counter clockwise, answer the question below. Does the cycle have net work input or output?____ A. Input B. output
Shown below is P-V diagram for a reversible cycle enclosed by 4 reversible process curves. The curve 1-2 and the curve 3-4 are reversible isothermal processes, and the curve 2-3 and the curve 1-4 are reversible adiabatic processes. If the cycle direction is counter clockwise, answer the question below. Select curve(s) which represent process(es) having heat interactions?____ A. curve 1-2 B. curve 2-3 C. curve 1-4 D. curve 3-4
Gaseous Methane actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle,starting at the beginning of the isothermal expansion, are V1 = 10.10 L, V2 = 14.53 L, V3 = 226.54 L, and V4 157.73L. The cycle receives 21.1 kJ of heat. Determine a) the work and b) the mean effective pressure.
The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant pressure 1.05 bar at specific volume 0.1 m3/kg and work done -515 J. 2-3: Isothermal compression to 4.2 bar. 3-4: Expansion according to law pv1.7= constant. 4-1: heating at constant volume back to the initial conditions. Calculate the work done for the constant volume heating process?
Air in a piston-cylinder assembly undergoes a Carnot power cycle. For the process numbers used in this problem refer to Figure 5.13 in the textbook and the figure below for a T-s diagram. The isothermal expansion and compression occur at 840 K and 295 K respectively. The pressures at the beginning and the end of the cycle are p1 = 400 kPa and p4 = 100 kPa, respectively. Assuming the ideal gas model for both constant and variable heat capacity, cp = 1.005 kJ/kg·K and k = 1.40 determine: a) the pressures p2 and p3. b) the heat transfer and work for each process. c) the thermal effici ency.
Shown below is P-V diagram for a reversible cycle enclosed by 4 reversible process curves. The curve 1-2 and the curve 3-4 are reversible isothermal processes, and The curve 2-3 and the curve 1-4 are reversible adiabatic processes. If the cycle direction is counter clockwise, answer the question below. Select curve(s) which represent process(es) outputing work to surroundings?____ A. curve 1-2 B. curve 3-4 C. curve 2-3 D. curve 1-4
Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle starting at the beginning of the isothermal expansion are, V1 = 10.10 li, V2 = 14.53 li, V3 = 226.54 li, and V4 = 157.73 li. The cycle receives 21.5 kJ of heat. Determine (a) the net work, (b) the mean effective pressure, and (c) the thermal efficiency of the cycle.
hown below is P-V diagram for a reversible cycle enclosed by 4 reversible process curves. The curve 1-2 and the curve 3-4 are reversible isothermal processes, and the curve 2-3 and the curve 1-4 are reversible adiabatic processes. If the cycle direction is counter clockwise, answer the question below. What is the cycle's rotation direction?____ A. It doesn't matter B. Clockwise C. Counter clockwise
Two pounds of carbon dioxide (CO2) as an ideal gas executes a Carnot power cycle while operating between thermal reservoirs at 530 and 100oF. The pressures at the initial and final states of the isothermal expansion are 400 and 200 lbf/in2, respectively. The specific heat ratio is k = 1.24. Determine the thermal efficiency, the work for the isothermal expansion, in Btu, and the work for the adiabatic expansion, in Btu.
3. Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle, starting at the beginning of the isothermal expansion ,are V1 = 10.10, V2 = 14.53, V3 = 226.54 ,and V4 = 157.73L. The cycle receives 21.1 KJ of heat. Determine a) the work and b) the mean effective pressure.
A four-cylinder, four-stroke, 1.6-L gasoline engine operates on the Otto cycle with a compression ratio of 11. The air is at 100 kPa and 37°C at the beginning of the compression process, and the maximum pressure in the cycle is 8 MPa. The compression and expansion processes may be modeled as polytropic with a polytropic constant of 1.3. Using constant specific heats at 850 K, determine the specific fuel consumption, in g/kWh, defined as the ratio of the mass of the fuel consumed to the net work produced. The air– fuel ratio, defined as the amount of air divided by the amount of fuel intake, is 16.
The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant pressure 1.05 bar at specific volume 0.1 m3/kg and work done -515 J. 2-3: Isothermal compression to 4.2 bar. 3-4: Expansion according to law pv1.7= constant. 4-1: heating at constant volume back to the initial conditions. Calculate the specific work done for process 1-2 in J/kg.

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