Two kilograms of an ideal gas at 700 kPa with an initial volume of 0.25 m3 expand adiabatically to a final volume of 1.5 m3. Determine the work done on the gas. Take Cp = 1.0035 kJ/kg-K and Cv = 0.7165 kJ/kg-K.

Q: A system containing air undergoes a polytropic process (polytropic exponent n= 1.3). During the…

A: Given:Polytropic index, n=1.3P1=100 kPaP2=1000 kPam=0.001 kgT1=10o C

Q: 10 lbm of ammonia (MW = 17), is heated inside a cylinder equipped with a piston. The initial…

A: Draw the P-V diagram and the T-S diagram. Here, 1 is the initial state of the system and 2 is the…

Q: 29.706 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

A:

Q: A sealed container of 1.9 m3 volume contains 177 kg of water in the saturated liquid-vapour state at…

A: Given: Mass of water (m)=177kgVolume of water (V)=1.9m3Tsat=275°C

Q: (a) the final temperature, (b) the work done during this process, (c) the total heat transfers

A: Given: V1=0.9 m3 P1=350 kPa P2=400 kPa To determine: the final temperature, (b) the work done during…

Q: 10 lbm of ammonia (MW = 17), is heated inside a cylinder equipped with a piston. The initial…

A: Given      Mass, m = 10 lbm     Pressure, P = 63 psi     Temperature, T1 = 50o F     Temperature, T2…

Q: takes 675 J of work to compress quasi- culate the temperature

A: we have to determine the temperature of a isothermal system undergoing compression

Q: An insulated piston-cylinder device contains 200 L of air at 292 kPa and 25 °C. A paddle wheel…

A:

Q: A reciprocating cylinder contains water at a density of 0.01019 kg / liter at a pressure of 0.8 mpa.…

A: Given   Density = 0.01019 kg / liter                = 10.19 kg/m3 pressure = 0.8 MPa Find     The…

Q: A rigid tank initially contains saturated vapor at 0.45 MPa. Then heat transferred to water until…

A: Given        Initial Pressure, P1 = 0.45 MPa  Final Temperature, T1 = 350oC

Q: Saturated vapor at 55°C is put under pressure to decrease the volume by one percent during an…

A:

Q: 10 lbm of ammonia (MW = 17), is heated inside a cylinder equipped with a piston. The initial…

A: m=10 lbm=4.53592 kgP1=63 psi=4.3437 barT1=50°F=283.15 KT2=100°F=310.928 K…

Q: A 10-kg mass of superheated refrigerant(R-22) at 1.2 MPa and 70°C is cooled at constant pressure…

A:

Q: 25.995 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

A: Given that: Mass flow rate of the water = 25.995 kg/s Pressure = 0.03398675 kbarg = 35 bar Internal…

Q: A rigid tank initially contains 4 kg of saturated liquid R-134a at 24C. A valve in the bottom of the…

A:

Q: A Piston-cylinder containing 300 lit of steam at 700 kPa and 250oC undergoes a constant pressure…

A: Given Data State 1: 700 kPa, 250°C, 0.3 m3 State 2: 700 kPa, 70% quality

Q: Three kilograms of water at 30°C are placed in a piston cylinder device under 1.0 MPa absolute…

A: The mass of the water, The initial temperature of the water, The initial pressure of water, The…

Q: A 0.8 m' rigid tank contains refrigerant-134a initially at 1.80 bar and 30 percent quality. Heat is…

A:

Q: piston-cylinder containing steam at 700 kPa and 250o C undergoes a constant pressure process until…

A: Given data :-  Pressure = 700kpa Temperature = 250 ° C

Q: The initial conditions of 0.8 kg of carbon dioxide inside a piston-cylinder device are 300°C and The…

A: Given:mass of cabon dioxide, m=0.8 kginitial pressure, P1=100 kPainitial temperature, T1=300o C or…

Q: Q-1 A piston cylinder device contains 10 kg of water at 1 MPa and 400 °C initially. Then the…

A: Given Data m=10 kg State 1: 1 MPa, 400°C State 2: 1 MPa, x=0.6

Q: A quantity of ideal gas occupies 0.5 m3 at 5oC and 165 kPa. It is compressed in accordance with the…

A: To find : The heat transfer during the process. Given data : The Initial volume is V1=0.5 m3. The…

Q: A rigid tank initially contains saturated vapor at 0.6 MPa. Then heat transferred to water until its…

A: Given data, Initially the vapor is saturated vapor at 0.6 MPa pressure. Finally the temperature of…

Q: Steam is contained in a 2-L volume at a pressure of 2.0 MPa and a temperature of 400°C. If the…

A: Givenvolume of the steam v=2ltr=2×10-3 m3pressure, P=2MPatemperature T=400oCheat added Q=20kJ

Q: A piston-cylinder device contains 0.2-kg of H20 as saturated vapor at 400 kPa. In a constant…

A: Given : Mass (m) = 0.2 kg Pressure saturated vapour= 400 kPa    To Find :-  Work done on the system=…

Q: 27.745 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

A:

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A:

Q: A rigid tank whose volume is unknown is divided into two parts by a partition. One side of the tank…

A:

Q: 35.269 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

A: Given that, Mass flow rate of water, m˙=35.269 kg/sec,Presssure of water, P=0.03398675 kbar=33.98675…

Q: A piston-cylinder device initially contains 1 kg saturated liquid water at 200°C. Now heat is…

A: Introduction The specific volume term is defined as the ratio of volume to the mass, for the…

Q: A frictionless piston-cylinder device and a rigid tank contain 2 kmol of an ideal gas at the same…

A: GIVEN DATA - Rigid tank contain 2kmol of ideal gas Temprature difference =10'C concept used- ideal…

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.