A piston-cylinder receives an eight kg of steam with an inlet pressure of 0.5 MPa and an inlet temperature of 300 C. The water vapor undergoes in an isobaric process cooling it until it condenses 70% of its mass. Determine (a) the work done during the process (b) change of internal energy, kJ (c) heat transferred, kJ

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Q: Water is contained in a closed, rigid, 0.25 m3 tank at an initial pressure of 500 kPa and a quality…

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Q: A piston-cylinder device contains a liquid-vapor mixture of water initially at 5 bars and 0.356…

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

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Q: The heat transfer of gas during the process, in kJ. (2) The velocity of the piston at the final…

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Q: Saturated liquid water with a volume of 1.2 m3 and temperature of 200°C is allowed to isothermally…

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Q: A 2.75 kg of air at 28.82 C underwent a polytropic process (n = 1.5) wherein its initial pressure of…

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Q: A cylinder fitted with a piston has a volume of 0.1 m3 and contains 0.5 kg of air at 0.4 MPa. Heat…

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Q: 1-kg of water that is initially at 90 °C with a quality of 0.1 occupies a spring-loaded…

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Q: A container with an internal volume of 2.94 m³ is occupied by a ten kg steam at 0.88 MPa with an…

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Q: A rigid tank initially contains saturated vapor at 0.35 MPa. Then heat transferred to water until it…

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Q: Consider a piston-cylinder device that initially contains saturated water vapor. Heat is then added…

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Q: 4.Scale formation is due to oxidation in hot working process. Select one: True  False

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

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Q: A device expends 145.6 kJ of energy while pressurizing 3.097 kg of water initially at 14.81 degrees…

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

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Q: A 7.57-m rigid tank contains 0.546 kg of H,O at 37.8°C. The H,0 is then heated to 204.4°C. Determine…

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

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

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Q: be regarded as an ideal gas, has a temperature of 28 oC and a specific internal energy u of 2,514…

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Q: ed during an isobaric process at 3.37 atm from an initial specific volume of 1.5 m3/kg to a final…

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Q: An insulated rigid tank initially contains saturated liquid water at 200°C. At this state,  only 25%…

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Q: A pure substance at 8 MPa and 400 °C is having a specific internal energy of 2864 kJ/kg and a…

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Q: A reciprocating cylinder of 0.2 m³ volume contains 0.6 kg of water at 0.5 MPa pressure. At constant…

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Q: What is the heat exchanged in this process (in MJ

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Q: A 2 kg of air at 27.88 C underwent a polytropic process (n = 1.5) wherein its initial pressure of…

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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.