As the insulation around an adiabatic and frictionless piston-cylinder system is removed, 42500 J heat is lost to the surrounding. As a result, the gas in the cylinder contracts and hence 400 dm3 volume of the gas in the cylinder becomes half. Having that the atmospheric pressure is 100 kPa and the weight on the piston exerts additional 5 kPa, determine the change in the internal energy of the gas during this process.

Q: A frictionless piston-cylinder device contains a gas initially at 0.8 MPa and 0.015 m³ .It expands…

A: Given:Initial pressure, P1=0.8 MPa or 800 kPaInitial volume, V1=0.015 m3Final Volume, V2=0.03 m3

Q: A frictionless piston-cylinder device initially contains 200 L of saturated liquid refrigerant-…

A:

Q: : the wo om 329K

A: GIVEN:T1=320kT2=500K

Q: Q4\closed system of 2kg undergoes adiabatic process. The work done on the system is 30000 J. if the…

A:

Q: For an energy storage capacity of 5 × 106 kWh, determine the minimum amount of water that needs to…

A:

Q: One kilogram of gas is contained in a piston-cylinder apparatus. The gas is then heated with 78.2 kJ…

A: Mass of bass = 1 kg Heat supplied= 78.2 kj Shaft work to the gas = 18.5 kj Specific internal energy…

Q: A- One kg of steam with a quality of 21% is heated at a constant pressure of 201 kPa. The work done…

A:

Q: ylinder with a moveable piston holds 0.38 lbm of hydrogen initially with a volume of 1.43 ft³ at a…

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Q: ch that it maintains a pressure of 900 kPa on the refrigerant. The refrigerant is now heated until…

A: The process is isobaric expansion V1T1=V2T2@ 900 KPa the saturation temperature is 35.5 Celcius =…

Q: One kg of air is heated in a closed rigid vessel such that its temperature changes from 270C to…

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Q: Air in a piston-cylinder assembly expands at constant pressure of 20 bar. The cylinder is 0.07 m in…

A:

Q: 2 kg of substance receives 500 kJ and undergoes a temperature change from 100°C to 200°C. Then…

A: Given, Mass of substance = m = 2 kg Heat received = Q = 500 kJ Initial temperature = T1 = 100 oC…

Q: Calculate the boundary work done by the system during this process

A:

Q: A refrigeration system uses R 12 as the refrigerant. The system is evacuated, then charged with…

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Q: A frictionless piston-cylinder device contains 2.5 kg of nitrogen at 100 kPa and 250 K. Nitrogen is…

A: According to the given dataThe mass of nitrogen is m = 2.5 kgThe initial pressure is P1 = 100 kPaThe…

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: In a piston-cylinder arrangement, energy is added and the piston is withdrawn in such a way that the…

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Q: The initial conditions of 0.8 kg of carbon dioxide inside a piston-cylinder device are 300°C and The…

A: Given:mass of cabon dioxide, m=0.8 kginitial pressure, P1=100 kPainitial temperature, T1=300o C or…

Q: Determine the heat interaction when a gas does 12 kJ of work which cause the internal energy to…

A: GivenW=12 kJE=30 kJAskedq=?SolutionE=q+W

Q: KPa and Is a erature is 696.54 C. Determine the change of internal energy in kJ.

A: GivenVolume=10m3Pressure P1=569.16kpaInitial Temperature T1=429.91KFinal…

Q: The work done when a gas is compressed in a cylinder is 452 J. During this process, there is a heat…

A:

Q: A 10 hp fan is used in a room for circulation purposes. Assuming a sealed room. that is well…

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Q: Q1) Water is placed in a piston-cylinder device at 0,4 MPa and 85°C. Determine the work does the…

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Q: Energy is added to a piston and cylinder apparatus. Consider the density (pV) as constant. The…

A: Given P1 = 200kPa V1 = 2m3 P2 = 100kPa To find Work done by the system

Q: If the pressure of a gas is a function of volume p(V)=(24atm lt)/V +.5atm (1atm/lt) V Determine the…

A: Given data Pressure of gas is a function of volume P(V) = 24V + 0.5 VWe have to find the work…

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 cylinder and a piston holding a spring containing 2 kg of oxygen at a pressure of 350 kPa and a…

A: Given, mass of oxygen, m=2kgP1=350KPaT1=250°CP2=150KPaT2=60°C From the gas…

Q: A refrigerator operating between -5°C and 27°C has the capacity of 80 tons. Determine the number of…

A: Write the given data in the problem.  m=10 kgT1=27°CT2=0°C Here, m is the mass of the refrigerator,…

Q: A fluid undergoes a two-step process. First, it is expanded from 0.8 to 1 m3 at a constant pressure…

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Q: pressure from 1 bar to 30 bar. Take the density of theliquid as 990 kg/m³. The isentropic specific…

A: given:density ρ=990kg/m3dp=30bar

Q: Thermodynamic problem. If the pressure of a gas is a function of volume p(V)=(24atm lt)/V +.5atm…

A: Given data P(v)= 24/v (atm-lt) +0.5v (atm/lt) And V1= 30 lt to V2= 5 lt. Find the work required to…

Q: A- One kg of steam with a quality of 21% is heated at a constant pressure of 201 kPa. The work done…

A:

Q: work

A: To determine the work done by water

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.