Air expands in a water-cooled piston cylinder, maintaining a constant temperature of 320 K. The initial state of air is P1 = 520 kPa and V1 = 10L. If the final pressure P2 = 100 kPa, determine: a. Mass of air (ans: 0.057 kg) b. The final volume of air inside the system, in L (

Q: A closed system consisting of 10 Ib of air undergoes a polytropic process from p1 = 80 lbf/in?, v1 =…

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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: Sketch the processes on a p-v diagram and determine the work per unit mass of air, in kJ/kg

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Q: Which statement is not correct?   a. For a closed system, the area below the curve of a process on a…

A: Its answer is d) In most cases, internal energy of a closed system is negligible compared to its…

Q: It is the total energy of a flowing fluid on a unit-mass basis.

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Q: Two-fifth Ib of gas is contained in a piston cylinder assembly at 1.6ft /lb and 100psia. The gas is…

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Q: Determine the volume change, in ft3, when 1 lb of water, initially saturated liquid, is heated to…

A: Given:- Mass of water (m) = 1 lbsaturated liquid is being heated to saturated vapor at constant…

Q: 1) A piston-cylinder device initially contains 1.0 kg of water at 30 °C and 2 MPa. The water is…

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Q: 1.0 A mass of ice at -7 °C is needed to cool 124 kg of vegetables (Cp = 3.35 KJ /kg.K )in a bunker…

A: The required mass of ice is 23.087 kg.

Q: Steam enters a turbine at T1=500 oC, P1= 10 MPa. The steam expands in the turbine to a pressure to…

A: Given data: T1=500°CP1=10 MPaT2=200°CP2=1 MPaQ˙=30 kWm˙=5 kg/s Need to determine the power output of…

Q: A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state…

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Q: One kg of air is compressed in a cylinder for each of the quasi-equilibrium processes in the table…

A: considering the given systems (a)constant volume processQ=ΔU+WW=0Q=ΔU=200 kjΔh=200 kjInternal…

Q: A gas undergoes a constant pressure process at P = 2.5 kPa where the volume increases from 500 I to…

A: Given data: P=2.5 kPaV1=500 l=500×10-3m3V2=1500 l=1500×10-3m3Q=3000 JNeed to determine the change in…

Q: Determine the work and heat transfer for each process, all in Btu.

A: It is given that  mass of water (m)= 2 lb Initial pressure (P1)= 100 lbf/in2 Initial temperature…

Q: Water at 150 kPa and 4 kg of saturated liquid vapor mixture is in a piston-cylinder assembly. 3 kg…

A: Steam in general can exits different phases as subcooled liquid, saturated liquid, saturated wet…

Q: An example of a force is: The mass of an object. The action of one body on another. A scalar…

A: In the given problem the example of a force is the action of one body on another body  And the force…

Q: Determine the volume change, in ft3, when 1 lb of water, initially saturated liquid, is heated to…

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Q: When an ideal gas undergoes isothermal expansion as a closed system, its specific internal energy:…

A: For an ideal gas, in an isothermal process, ΔU=Q−W =0, so Q=W. In the Isothermal process, the…

Q: A quantity of air at a pressure of 105 kN/m² and temperature of 25 °C is compressed according to the…

A: Given data: Pressure P1=105 kNm2 Temperature T1=25°C=25+273=298 K PV1.33=Constant Initial Volume…

Q: A closed, rigid, 0.40 m³ tank is filled with 9 kg of water. The initial pressure is p₁ = 20 bar. The…

A: V=0.40 m3 m=9 Kg p1= 20 bar p2= 4 bar   To find: x1 and  Q˙out

Q: Four kilogram of certain gas is contained within the piston- cylinder assembly. The gas undergoes a…

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Q: Q2: A nozzle is a device for increasing the velocity of a steadily flowing fluid. At the inlet to a…

A: GIVEN DATA A NOZZEL GIVEN WITH INLET CONDITION A=0.1m2 , v1=0.19 m3/kg , h1=3025kj/kg OUTLET…

Q: Two lbs of water vapor in a piston-cylinder assembly expands at a constant pressure of 250 lb/in²…

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Q: A piston cylinder device initially contains superheated steam as shown in the following figure. Then…

A: At P1=3.5 Mpa T1=Tsat+7.4 T1=250C v1=0.05876 m3/Kg u1=262.4 KJ/Kg At P2=3.5 MPa v2=vf=0.001235 m3/Kg…

Q: 40 m3 of air (R=0.287), at a gage pressure of 20kPa, and a temperature of 27 °C. then the specific…

A: 40 m3 of air (R=0.287), at a gage pressure of 20kPa, and a temperature of 27 °C. then the specific…

Q: Ice is added to hot tea in a thermos and then, the thermos is closed. The energy loses through the…

A: Isolated system: A system which does not allow the heat, mass and work across its boundary is known…

Q: A gas within a piston-cylinder assembly undergoes a process from a state where P = 100 kPa, V = 0.09…

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Q: A closed system consisting of 10 lb of air undergoes a polytropic process from p₁ = 80 lbf/in². v₁…

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Q: A piston-cylinder assembly with a linear spring acting on the piston as shown below contains the…

A: as per guideline i have to solve only three subpart of your question

Q: n an engineering system, air passes through two sequential processes.  Process 1-2: Polytropic…

A: Given:-P1=100 KPaV1=0.04 m3V2=0.02 m3n=1.3To find:-PV diagramWork done

Q: A substance initially at 67kPa, 58 m³ is compressed to 167 kPa in a process where PV=const., n =…

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Q: Consider a piston-cylinder device containing saturated water vapor. Heat is then added until the…

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Q: A gas undergoes a constant pressure process at P = 2.4 kPa where the volume increases from 500 I to…

A: According to the given data P=2.4 kPa V1=500 l=500×10-3m3 V2=1500 l=1500×10-3m3 Q=3000 JWe need to…

Q: A canister of sevoflurane, an inhaled anesthetic, is warmed to room temperature over the course of…

A: Given that, Force exerted by the piston, F= 623mN Volume increase,  dV = 16cm3 We have to find work…

Q: 40 m3 of air (R=0.287), at a gage pressure of 20kPa, and a temperature of 27 °C, then the specific…

A: Given 40 m3 of air (R=0.287), at a gage pressure of 20kPa, and a temperature of 27 °C To determine…

Q: Water at 320C and 20bar undergoes a process within a rigid tank to a final pressure of 30bar.…

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Q: Saturated water vapor initially at a pressure of 225 kPa and volume 0.01 is contained in a piston…

A: Given data :- V=.01 m3 P1=225 kPa Vg=.7930 m3/kg

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.