Water with a quality of 50% is contained in a piston/cylinder arrangement at state 1. It is heated at constant pressure until it is superheated vapor, at state 2. At this point, the piston is locked in place and the water is heated further at constant volume until state 3. Draw this two-step process on a P-v diagram and on a T-s diagram.

Water with a quality of 50% is contained in a piston/cylinder arrangement at state 1. It is heated at constant pressure until it is superheated vapor, at state 2. At this point, the piston is locked in place and the water is heated further at constant volume until state 3. Draw this two-step process on a P-v diagram and on a T-s diagram.

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

See similar textbooks

Similar questions

On the P-v diagram, sketch the constant-temperature process through the state P = 280 kPa, v = 0.06 m3 /kg as pressure changes from P1 = 400 kPa to P2 = 200 kPa. Place the value of the temperature on the process curve on the P-v diagram.
oxygen at 200 kPa, 27 degree celcius in a piston cylinder device arrange to maintain a constant pressure. how much work in KJ/kg is produced by this system when it is heated to 227 degree celcius?
A Piston-Cylinder system initially contains R-134a refrigerant at a temperature of 2.8 bar and 40°C and an initial volume of 0.1 m3. First, heat is transferred to the system by keeping the piston constant and this process is continued until the pressure is 3.2 bar. The process is then maintained by allowing the volume to change while the pressure is kept constant. At the end of this process, the temperature reaches 50°C. Assuming the state changes as if they are balanced,calculate;a) The mass of R-134a refrigerant in the system,b) The amount of heat transferred during the fixed volume process,c) The amount of heat transferred during constant pressure operation.d) Show the state changes on the P-v diagram.
. Liquid water at 453.15 K (180°C) and 1002.7 kPa has an internal energy (on an arbitrary scale) of 762.0 kJ kg-1 and a specific volume of 1.128 cm3 g-1.(a) What is its enthalpy?(b) The water is brought to the vapor state at 573.15 K (300°C) and 1500 kPa, where its internal energy is 2784.4 kJ kg-1 and its specific volume is 169.7 cm3 g-1. CalculateΔU and ΔH for the process.
During a polytropic process, 10 lb of an ideal gas, whose R = 40 ft.lb/lb.R and cp = 0.25 Btu/lb.R, changes state from 20 psia and 40°F to 120 psia and 340°F. Determine (a)n, (b) U and H, (c) S, (d)Q, (e)∫ , (f)- ∫...... (g)If the process is steady flow during which K = 0, what is Ws?. What is K if Ws = 0? (h)What is the work for a nonflow process?
Saturated water vapor at 2.5 bar undergoes a process in a closed system to a final state where the pressure is 7.0 bar and the temperature is 180°C. Can the process occur adiabatically? show calculations on why or why not.
An ideal gas with R=0.062 BTU/lbm-R and Cv=0.158 BTU/lbm-R undergoes a three-cycle in a closed system. From the initial state of 20 psia and 570 R, the gas is compressed at a constant temperature of 1/5 of its initial volume, process 1-2; it is then heated isochorically to state 3, process 2-3; and finally, expands polytropically with index n=1.5 back to its initial state, process 3-1. Determine the pressures, specific volumes and temperatures at cardinal points around the cycle and the cycle thermal efficiency.
piston–cylinder assembly contains air, initially at 2.6 bar, 134 K, and a volume of 2.6 m3. The air undergoes a process to a state where the pressure is 0.8 bar, during which the pressure–volume relationship is pV = constant. Assuming ideal gas behavior for the air, determine the work for the process in kJ.
A piston-cylinder device contains an ideal gas of nitrogen. At the initial state, the volume is V1= 1.00 m3, the pressure is p1= 400.00 kPa, the temperature is T1= 300.00 K. An electric heater within the device is turned on for a time of Δt = 5.00 min. The current is I = 3.00 A, and the source voltage is V = 120.00 V. During the heating process, the gas expands, and a heat loss of Qout = 2.80 kJ occurs. The gas constant is R = 0.297 kPa·m3/(kg·K), and the room temperature specific heat at constant pressure is cp =1.039 kJ/(kg·K). Calculate the mass of the gas, m__________ (kg)
A piston-cylinder device contains an ideal gas of nitrogen. At the initial state, the volume is V1= 1.00 m3, the pressure is p1= 400.00 kPa, the temperature is T1= 300.00 K. An electric heater within the device is turned on for a time of Δt = 5.00 min. The current is I = 3.00 A, and the source voltage is V = 120.00 V. During the heating process, the gas expands, and a heat loss of Qout = 2.80 kJ occurs. The gas constant is R = 0.297 kPa·m3/(kg·K), and the room temperature specific heat at constant pressure is cp =1.039 kJ/(kg·K). Calculate the electrical work done on the gas, Wele__________ (kJ)
On a T-V diagram sketch the constant specific volume through the reference state (state 0) T = 250C, v = 1.1989 m^3/kg from T1 = 350C to T2 = 120C. Sketch the constant pressure curves through the states so that they extend form the compressed liquid region to the superheated region. Places states on diagram along with their temperatures, pressures, and specific volumes on the diagram axes. The fluid is water.
A mass of 3 kilograms of air in a piston-cylinder assembly undergoes two processes in series from an initial state where p1 = 1.5 MPa, T1 = 264°C: Process 1–2: Constant-temperature expansion until the volume is twice the initial volume. Process 2–3: Constant-volume heating until the pressure is again 1.5 MPa.Assuming ideal gas behavior, determine the temperature at state 3, in kelvin.