A system consisting of 10 kg of water is sealed in a cylinder and piston assembly. It starts as saturated liquid at 310 kPa absolute and completes a cycle consisting of a process shown below:
-An isobaric expansion to a specific volume of 1 m3/kg
a.)Determine the work performed by or on the system for the process composing the cycle.
b.)Determine the heat added to or rejected from the system for the process composing the cycle.
c.)Sketch the cycle on a P-v diagram includingthe saturated liquid and vapor lines
A system consisting of 10 kg of water is sealed in a cylinder and piston assembly....
A mass of 5.5 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder at 101.325 kPa. Initially, 2.3 kg of the water is in the liquid phase and the rest is in the vapor phase. Heat is now transferred to the water, and the piston, which is resting on a set of stops, starts moving when the pressure inside reaches 300 kPa. Heat transfer continues until the total volume increases by 21 percent. Determine: a) the initial...
A piston-cylinder assembly undergoes a cycle consisting of the following three processes: • Process 1-2: Compression with constant internal energy • Process 2-3: Constant-volume cooling to p3 = 100 kPa, V3 = 0.1 m3 • Process 3-1: Constant-pressure expansion with W31 = 12 kJ Sketch the cycle on a p-V diagram, labeling each of the states and indicating the process directions with arrows. If the work for the entire cycle is Wcycle = -20 kJ and changes in kinetic and potential energy are negligible,...
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3. A piston-cylinder device initially contains 3 kg saturated liquid water at 500 kPa. Now heat is transferred to the water until the cylinder contains saturated vapor only. Determine water m = 3 kg p = 500 kPa a) The initial and final volume of the cylinder, b) The boundary work of the piston, and c) The heat added to the system
One and one-half pounds of water within a piston-cylinder assembly execute a Carnot power cycle. During isothermal expansion, the water is heated at 500 degree F from saturated liquid to saturated vapor. The vapor then expands adiabatically to a temperature of 100 degree F and a quality of 70.38%. Sketch the cycle on p-v coordinates. Evaluate the heat transfer and work for each process, in Btu. Evaluate the thermal efficiency.
nts) Calculate the change in internal energy during the conversi . (20 poi on of 2 kg of saturated liquid water to saturated vapor i 100 kPa? Assuming heat is added to the piston cylinder in the process, what is the work performed by the piston (boundary work)? What is the required heat in if you assume a heat loss of 50 kJ during the process? Please show work using a T-v AND P-v diagram n a piston cylinder at...
A mass of 5 kg of saturated liquid-vapor mixture of water is contained in a piston- cylinder device at 125 kPa. Initially. 3 kg of the water is in the liquid phase and the rest is in the vapor phase. Heat is now transferred to the water, and the piston, which is resting on a set of stops, starts moving when the pressure inside reaches 300 kPa. Heat transfer continues until the total volume increases by 10%. We denote the...
Ten kilograms of water in a piston/cylinder arrangement exists as saturated liquid/vapor at 100 kPa, with a quality 20%. The system is now heated so that the volume triples. The mass of the piston is such that a cylinder of 300 kPa will float it. (a) Find the final temperature. (b) Find the heat transfer in the process. (c) What is the phase of water when the piston just starts to lift up? (d) Sketch the process on a P-v...
Water vapor initially at 10 bara and 400°C is contained within a piston-cylinder assembly. The water is cooled at constant volume until its temperature is 150°C. The water is then condensed isothermally to saturated liquid. Sketch the process in T-v coordinates. Clearly label the three states. For the water as the system, (a) write the symbolic equation for the specific work (and simplify), w; and (b) evaluate the specific work, in kJ/kg.
A gas within a piston-cylinder assembly undergoes a thermodynamic cycle consisting of three processes: Process 1-2: Constant volume V1 = 2 m3, p1 = 1 bar, to p2 = 3 bar, U2 – U1 = 400 kJ. Process 2-3: Constant pressure compression to V3 = 1 m3. Process 3-1: Adiabatic expansion, with W31 = 150 kJ. There are no significant changes in kinetic or potential energy. Determine the net work for the cycle, in kJ, and the heat transfers for...