An insulated vertical piston–cylinder device initially contains 0.11 m3 of air at 150 kPa and 22°C. At this state, a linear spring touches the piston but exerts no force on it. The cylinder is connected by a valve to a line that supplies air at 700 kPa and 22°C. The valve is opened, and air from the high-pressure line is allowed to enter the cylinder. The valve is turned off when the pressure inside the cylinder reaches 600 kPa. If the enclosed volume inside the cylinder doubles during this process, determine (a) the mass of air that entered the cylinder, and (b) the final temperature of the air inside the cylinder.

Q: A piston-cylinder device contains 0.35 kg of air initially at 2423 kPa and 321 oC. The air is first…

A:

Q: A 25-kg iron block initially at 280°C is quenched in an insulated tank that contains 100 kg of water…

A: The mass of the iron block is m1=25 kg. The mass of the water is m2=100 kg. The temperature of the…

Q: Air at 27°C and 100 kPa is contained in a piston– cylinder device. When the air is compressed…

A: Given, T1 = 27°C = 27+273 = 300 K P1 = 100 kPa T1 = 27°C = 27+273=300°K W = 1000 kJ P2 = 600 kPa m=?…

Q: A rigid, insulated tank that is initially evacuated is connected through a valve to a supply line…

A: Linear interpolation is a method of curve fitting that uses linear polynomials to create new data…

Q: A rigid tank initially contains 0.9 kg of water. Then it is filled more with steam from a supply…

A: Given: Mass of water mw=0.9kg Final mass of the tank m=2kg Pressure of steam supplied P1=1.5MPa…

Q: 3. A piston-cylinder device with a set of stops initially contains 0.6 kg of steam at 1.0 MPa and…

A: find the compressor work and final temperature.

Q: Refrigerant-134a is throttled from the saturated liquid state at 800 kPa to a pressure of 160 kPa.…

A:

Q: A 2-m3 rigid tank initially contains air at 100 kPa and 22°C. The tank is connected to a supply line…

A: Given: The initial temperature of the air is T1=22°C. The final temperature of the air is T2=77°C.…

Q: A 12 ft^3 rigid tank initially contains saturated water vapor at 250 F. The tank is connected by a…

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Q: A rigid, insulated tank that is initially evacuated is connected through a valve to a supply line…

A: Write the properties of helium. Write the expression of the specific volume. Write the expression…

Q: A tank with an internal volume of 1 m3 contains air at 800 kPa and 25°C. A valve on the tank is…

A: Given: volume of the tank (V) =1 m3 P1= 800 kPa T1= 25oC =298K P2= 150kPa Heat transfer negligible…

Q: An adiabatic piston-cylinder device equipped with a spring maintains the pressure inside at 300 kPa,…

A:

Q: A work producing device of the piston-cylinder system at the beginning contains 1.5 kg of…

A: Write the given information. Write the expression of mass at state 2.

Q: A rigid, insulated tank that is initially evacuated is connected through a valve to a supply line…

A: Given data as per the question Pressure in the tank = 4Mpa The final temperature of steam =  5500 c

Q: It is insulated against heat, except for a cylinder base B with a volume of 100 liters. This…

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Q: A rigid tank of 0.22-m'volume initially contains saturated vapor refrigerant-134a at 1.2 MPa. The…

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Q: A 3 m' tank initially contains air at 100 kPa and 25°C. The tank is connected to a supply line at…

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Q: A rigid, well-insulated tank is initially empty. The tank is kept connected by means of a valve to a…

A:

Q: A balloon initially contains 65 m3 of helium gas at atmospheric conditions of 100kPa and 22°C. The…

A: Given Data:    V1=65m3                  PR=P2=150kpa    P1=100 kpa              T2=(?)    T1=22°C

Q: The compressors of a production facility maintain the compressed-air lines at a (gauge) pressure of…

A: Given data Tair=20°cηc=0.8ηm=0.92Cd=0.65P2=700 KPaP1=101 KPa

Q: 3. A mass of 2.4 kg of air at 150 kPa and 12°C is contained in a gas-tight, frictionless…

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Q: A piston–cylinder device contains steam that undergoes a reversible thermodynamic cycle. Initially…

A: Find the properties of steam at a given condition.

Q: Steam enters a two-stage adiabatic turbine at 8 MPa and 500°C. It expands in the first stage to a…

A: The given values according to the above figure are, State 1: P1=8 MPaT1=500 0C State 2: P2=2…

Q: Two rigid tanks are connected by a valve. Tank A contains 0.2 m3 of water at 400 kPa and 80 percent…

A: Given Tank A Volume = 0.2 m3 Pressure = 400 kPa Quality = 80% = 0.8 Tank B Volume = 0.5 m3 Pressure…

Q: A variable-load piston-cylinder device contains air (cp = 1.005 kJ/kgK; cv = 0.718 kJ/kgK) at 500…

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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.