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

Q: Water is heated at constant pressure from 5.0 MPa, 140 ºC to 500 ºC. Determine the rate of heat…

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Q: 29.706 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

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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…

A: This is a case of a constant volume heating process. Only pressure and temperature will change.…

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

A: The given process follows the relation, The given process is isothermal.

Q: Air is cooled during an isobaric process at 6.97 atm from an initial specific volume of 1.02 m³/kg…

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Q: A 2.43 kg of air at 23.65 C underwent a polytropic process (n = 1.5) wherein its initial pressure of…

A: The final temperature of the system can be determined as,

Q: Air is cooled during an isobaric process at 4.84 atm from an initial specific volume of 1 m³/kg to a…

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

A: Given        Initial Pressure, P1 = 0.45 MPa  Final Temperature, T1 = 350oC

Q: Consider a piston-cylinder device which initially contains 1.4 kg of saturated liquid water at…

A: Given:Initial state of water, m=1.4 kg, T1=220oC, Saturated liquidFinal state volume, V2=4×V1Quality…

Q: 25.995 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

A: Given that: Mass flow rate of the water = 25.995 kg/s Pressure = 0.03398675 kbarg = 35 bar Internal…

Q: A mixture of liquid and gaseous water is a pure substance, but a mixture of liquid and gaseous air…

A: As there are some chemicals present in the gaseous air which are not soluble in the liquid.

Q: A piston-cylinder device contains 15 kg of Refrigerant-l 34a (R-134a) at 10 °C with 30% quality.…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

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: Air is cooled during an isobaric process at 2.48 atm from an initial specific volume of 1.05 m³/kg…

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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…

A: Saturation Pressure: The pressure exerted by the vapor on the liquid when both liquid and vapor are…

Q: Work done in an adiabatic process between a given pair of end states depends on: (a) the end states…

A: It is required to determine work done for adiabatic process

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

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Q: steam with an enthalpy of 3015.2 kj/kg undergoes a constant pressure process at 1MPa until the…

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

A: Given : Mass (m) = 0.2 kg Pressure saturated vapour= 400 kPa    To Find :-  Work done on the system=…

Q: 27.745 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

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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: Air is cooled during an isobaric process at 3.7 atm from an initial specific volume of 1.35 m3/kg 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…

A: Volume of the tank, V=7.57 m3mass of H2O , m=0.546 kgTemperature of H2O , T1=37.8o Cfinal…

Q: A well-insulated rigid tank contains 3 kg of water at 200 kPa. Initially, half of the volume is in…

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Q: A piston-cylinder device initially contains 10L of liquid water at 35.5C and at a pressure of 0.582…

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Q: As the insulation around an adiabatic and frictionless piston-cylinder system is removed, 42500 J…

A: Given: The heat removed from the system Q=-42500 J. The initial volume is V1=400 dm3. The…

Q: Steam with a specific volume of 0.09596 m³/kg undergoes a constant pressure process at 1.7 MPa until…

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Q: 1. A gas contained in a vertical cylindrical tank with a height of 3m and diameter of 2.5 m. The gas…

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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…

A: Given:P=3.37 atm =3.37*101.325 =341.465 KPav1=1.5 m3/Kgρ2=1.118 kg/m3m=4.83

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

A: Temperature=200°Conly 25% occupiedt=20minm=1.4kg To-Find:- a) The volume of the tankb) Final…

Q: ooled during an isobaric process at 7.72 at from an initial specific volume of 1.11 m^3/kg to a…

A: Given:v1=1.11 m3/Kgρ2=1.189 Kg/m3m=4.85 KgP=7.72 KPa

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: 1. A piston-cylinder device contains 10.0 lbm of water initially at 225 psia and 25.59 ft. Now 4000…

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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.