piston cylinder assembly initially contains 25g of saturated water vapor at 600kpa pressure. Then, an electric heater in the cylinder is switched on and a current of 0.2A from the 0.12kv source flows through the heater for 18 minutes. Calculate the final temperature of the system if 4.17 Wh heat is transferred from the fixed cylinder to the environment during this period.

Q: Refrigerant-134a is throttled from the saturated liquid state at 800 kPa to a temperature of -20°C.…

A: Given data: Pi=800 kPaTi=-20°C Need to determine the pressure and quality of the refrigerant at the…

Q: A boiler takes in water at 200 degrees Celsius and 13 MPa (1) and another water at 1.0 MPa (2), and…

A: At 13 MPa: Saturation temperature→Tsat1=331°C And →hf=1532.43 KJKg and hg=2726.66 KJKg But initial…

Q: Subcooled water at 5°C is pressurised to 350 kPa with no increase in temperature, and then passed…

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Q: Inside a piston-cylinder device there is 5 kg of a moist water vapor at 125 kPa. At the beginning…

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Q: What is the status of Refrigerant-134a at 10°C and 1 MPa?

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Q: SET B only: Superheated steam at 0.6 MPa and 500 °C enters an adiabatic nozzle with a low velocity…

A:

Q: 1 kg of steam at initial conditions of 5.1 MPa and 370 °C expands in a turbine until it becomes…

A: 1 kg of steam at initial conditions of 5.1 MPa and 370 °C expands in a turbine until it becomes…

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

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Q: The air has a dry ball temperature of 40 ℃ and a wet bulb temperature of 26 ℃ initially heated in…

A: On the basis of given information we can draw the process as shown. process 1 to 2 is sensible…

Q: Calculate the boundary work done by the system during this process

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Q: A high-pressure hot water system has a total volume of 3m³. Calculate the expansion volume that…

A: Given :The total volume of a high-pressure hot water system, The initial temperature of the system,…

Q: termine the rate of heat released (in kW) by the steam with 88.0% quality that enters the evaporator…

A: Given:x=0.88m=1800 kg/hT1=132°CT2=100°CC=4.187 KJ/kg.°C

Q: Subcooled water at 5°C is pressurised to 350 kPa with no increase in temperature, and then passed…

A:

Q: Derive an equation for work done by the  system  during isothermal expansion process.

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Q: m = 0.9000 kg of water is heated with P = 481 W electric heater for t = 39 min. During this time the…

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Q: Water with a quality of 53.5% and pressure of 200 kPa is inside a rigid tank.The tank is heated by…

A: Given, Quality of the water (x)=0.535 Pressure of water=200kPa heat supplied by the heater=120W…

Q: PROBLEM 1 A 10 m³ rigid tank contains R-134a at 200 kPa and 20°C. Heat is added to the tank until…

A: The isochoric process is a thermodynamic process that takes place at a constant volume. It's also…

Q: Subcooled water at 5°C is pressurised to 350 kPa with no increase in temperature, and then passed…

A:

Q: A rigid 0.5 m³ tank initially contains saturated liquid water at 200°C. A valve on the bottom of the…

A: Given: The volume of the tank, V = 0.5m³ The temperature of saturated liquid water, Tsat = 200ᵒC The…

Q: (Section B) A thermodynamic system contains piston-cylinder arrangement with 0.02 m³ of air at 50°C…

A:

Q: A spark ignition engine has a compression ratio of 8. The condition at the beginning of compression…

A: Given data: Temperature, T1 = 15 C = 288.15 K Pressure, P1 = 95 kPa = 95000 Pa compression ratio, r…

Q: A piston cylinder device is fitted with stops at the top. Initially.5lbs of R-134a is in the tank at…

A: Given: The mass of refrigerant, m = 5 lbs The initial temperature of the tank, T1 = 80 F = 26.66°C…

Q: A turbine is fed with a flow of 20 kg/s of water vapour at 4MPA. The steam is generated in a boiler…

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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: Two cylindrical vessels of 3m³ each are interconnected through a pipe with valve in- between.…

A: Given: Two cylindrical vessels of the volume is, V1=V2=3 m3. The mass of air in calendar 1 is,…

Q: A schematic of a steam power plant is shown in the figure. The boiler volume is 50 liter and…

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Q: m = 0.9000 kg of water is heated with P = 481 W electric heater for t = 39 min . During this time…

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Q: final storage tank temperature if the initial temperature is 35C. Take

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Q: is available in 240 kPa and 40°C at a volume of 0.1 m3. The pressure created by the piston, which is…

A: here, nothing is mentioned about properties of R134 a so, assuming all properties. gas constant =…

Q: er at 0.2 MPa and 200°C. The insulation is es thermal energy with the surroundings, wh (e.g.…

A:

Q: The pressure of saturated water vapor in an insulated tank with a volume of 5.7 m3 is 350 kPa. The…

A:

Q: Air contained in a variable-load piston-cylinder is initially at 0.1 m3 , 22°C, and 100 kPa. The…

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Q: A steam turbine operates with 1.6 MPa and 350 deg C steam at its inlet and saturated vapor at 30 deg…

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Q: In a well-insulated fixed-volume closed vessel, there is initially 5 kg of saturated liquid-vapor…

A: current quality of steam =0.25 required quality = 1.0

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.