(1) An insulated piston-cylinder device contains 5 L of saturated liquid water at a constant pressure of 150 KPa. An electrical resistance heater inside the piston is turned on now and electrical work done on steam is 2200 W. Find: (a) initial and final temperature of water (T1 and T2), (b) the work done during this process (W1-2), (c) the entropy change of water and show if the process is possible or not, and (d) plot P-V and T- s diagrams.

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Q: Qout = 45 kJ %3D A closed, rigid tank whose volume is 2 m contains 4.65 kg of air with the initial…

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Q: A large, insulated tank of contains 55 liters of water at a temperature of 20°C. You drop in an…

A: Given: Vtank=55 litersTwater=20°Cmice=30 gmTice=0°C

Q: Calculate the work W done by the gas during process 1→2

A: WORK DONE BY GAS Thermodynamic system work is done when under external pressure it expands…

Q: Question 1: 4-20 A piston-cylinder device contains 0.15 kg of air initially at 2 MPa and 350°C. The…

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Q: Water, initially a saturated liquid at 100°C, is contained in a piston-cylinder assembly. The water…

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Q: A heat source at 600 K loses 1000 kJ of heat to a sink at 300 K. The Entropy generated in this…

A: Given data as per question Temperature of heat source=600 k heat=1000 kjtemperature of sink =300 kwe…

Q: Consider the system shown in the figure. When the pins fall away, the gas expands against a constant…

A: Number of moles of the gas, n=10  Initial pressure Pi= 5atm External Pressure Pext = 1 atm T = 300 K…

Q: plunged into a tank containing 4 kg of liquid water initially at 250K. The copper part and water can…

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Q: a) A piston-cylinder device contains a working fluid which undergoes an irreversible and…

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Q: A liquid R-134a bottle has an internal volume of 0.0018 m^3 initially, it contains 0.88 kg of R-134a…

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Q: 2. A dividing wall divides an insulated container into two compartments as shown in the figure.…

A: please refer handwritten solution

Q: 4-40 Steam at 75 kPa and 8 percent quality is contained in a spring-loaded piston-cylinder device,…

A: Initial State,P1 = 75 kPa,   Volume = 2 m3,     Quality = 8%  or  X = 0.08,Final State,P1 = 225 kPa,…

Q: A piston-cylinder device initially contains 0.82 m3 of air at 212 kPa and 78.2oC. The air is now…

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Q: We take a 33 kg chunk of ice (Temp is 0°C) and submerge it in an isolated container. This container…

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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.