A frictionless piston-cylinder device as shown in Figure Q4 contains 8.5 liters of saturated liquid water at 275 kPa. An electric resistance is installed in it and is being turned on until 3250 kJ of energy is transferred to the water. Assuming the piston-cylinder device is well insulated, determine i) ii) iii) iv) the mass of water, kg, the final enthalpy of water, kJ/kg, the final state and the quality (x) of water, the change in entropy of water, kJ/kg, and whether the process is reversible, irreversible, or impossible. Sketch the process on P-v diagram with respect to the saturation lines. UTM OUTM Sat. liquid water 8.5 litres ww OUTM OUTM \UTM

Q: 3.2) An isolated piston-cylinder contains 3 liters of saturated liquid water at a constant pressure…

A: Given: The volume of water, V = 3 litres The pressure of water, P = 200 kPa The work done by paddle,…

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Q: A piston-cylinder assembly contains 2 lb of water, initially at 100 lbf/in.² and 600°F. The water…

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Q: During a steady flow process, the pressure of the working substance drops from 200 to 20 psia, the…

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Q: A piston cylinder device shown in Figure P2.6 contains 0.1 kg of air initially at a pressure of 4…

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Q: 5) A mass of 15 kg of air in a piston-cylinder device is heated from 25 to 85°C by passing current…

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Q: Air is compressed in a piston-cylinder assembly from p₁=10 lb/in², T₁ = 500°R, V₁ = 9 ft³ to a final…

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Q: 2 kg of water vapor in a piston-cylinder assembly expands at a constant pressure of 300 kPa (3.0…

A: The mass of water vapor is .The pressure is .The final volume is .

Q: 3. A system containing 6 lbm of R-22, initially at P1 = 60 lbf/in? and V1 = 2.75 ft, is subjected to…

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Q: 3. The closed piston-cylinder assembly shown contains Ammonia. The piston moves between two sets of…

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Q: 2.13 A gas expands from an initial state where p 500 kPa and V= 0.1 m² to a final state where P₂ =…

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Q: piston-cylinder assembly contains 2 Ib of water, initially at 100 Ibf/in.2 and 500°F. The water…

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Q: The figure below shows a piston-cylinder assembly fitted with a spring of stiffness k = 29.7 N/m…

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Q: 3.76 A system consisting of 2 kg of ammonia undergoes a cycle composed of the following processes:…

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Q: Krypton in a closed system is compressed adiabatically from 74 K and 1 bar to a final pressure of 24…

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Q: 2,3) In a plunger cylinder device, 15 kg of air is heated from 25°C to 77°C by passing curr through…

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Q: Steam enters a turbine operating at steady state at 850°F and 450 lbf/in² and leaves as a saturated…

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Q: A piston-cylinder assembly with stops (see figure) contains 1.54 kg of water initially occupying a…

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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.