1000 cm³ of air at an initial pressure of 1.10 × 10° Pa and temperature of 300 K undergoes the following changes: heat the air at constant pressure until its temperature reaches 390 K and then compress the air isothermally until it returns to the initial volume of 1000 cm³ and finally allow the air to cool so that its final pressure is 1.10 × 10° Pa.

Q: Three cubic meter of air at a pressure of 20 kPag and 20 0 C is compressed at constant volume to a…

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Q: t=280 degrees celsius and s=5.72 KJ/KG determine enthalpy and specific internal energy

A: To determine enthalpy and specific internal energy at T=280 degrees celsius and s=5.72 KJ/KG

Q: A perfect gas with an initial volume of 0.1 m° is compressed adiabatically from 1.93 MPa and -4°C to…

A: Given: V1 = 0.1 m3 P1 = 1.93 MPa P2 = 5.84 MPa

Q: Some water is compressed from 1 atm pressure to 4 atm pressure at constant temperature. The initial…

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Q: expands at constant pressure of 172 kPa in piston-cylinder system from a temperature of 32 oC to a…

A: Given Data⇒ Mass of gas(m)=2 kg Constant pressure process  P=172 KPa Initial temperature…

Q: During the polytropic process of an ideal gas, the state changes from 20 psia and 40 OF to 120 psia…

A: Given data: Here, P1 and T­1 represent the initial pressure and temperature, respectively and P2…

Q: 1. A saturated water vapor is in a tank with a volume of 2.5 ft. It has a pressure at 25 psia. Due…

A: Given dataV=2.5ft3P=25PsiaT=75°F ***As per our company policy we are supposed to do only 3 subparts…

Q: A rigid tank initially contains 2 kg of superheated water vapor at 500 kPa and 300 °C. The water is…

A: Given-Data:- m=2kgP1=500kPaT1=300°CT2=120°C As the system is a closed and rigid tank, therefore,…

Q: Determine the work done on steam in kJ during expansion.

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Q: What is the change in the enthalpy, in kJ/kg, of oxygen as its temperature changes from 150 to…

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Q: For a certain ideal gas R = 25.8 ft-lb/lb-R and k = 1.09 (a) What are the values of cp and cv? (b)…

A: Given: To determine the Cp and cv , mass and final temperature and pressure.

Q: 2) A closed, rigid container of water at 75 kPa. The pressure increases to 1.10 MPa due to heating…

A: Given: Initial pressure P1=75kPaFinal pressure P2=1.10MPaMass of saturated liquid mf=0.85kgMass of…

Q: A Piston-cylinder containing 300 lit of steam at 700 kPa and 250oC undergoes a constant pressure…

A: Given Data State 1: 700 kPa, 250°C, 0.3 m3 State 2: 700 kPa, 70% quality

Q: 8.881 kg of steam at a pressure of 20 bar and temperature of 300 deg C expands isentropically to a…

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Q: Determine the quality of 170 kPa of steam when 470 kJ / kg of energy is lost from the saturated…

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Q: 0.15 lbm of neon gas (in a piston cylinder device) at an initial pressure and temperature of 90 psia…

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Q: A rigid vessel contains 5kg of wet steam (water) at 0.4 MPa. After the addition of 9585 kJ of heat…

A: Given Data  Mass, m=5Kg P1=0.4MPa=400 KPa P2=2MPa  T2=700°C Heat Addition, Qadd=9585 KJ By using…

Q: During a throttling process, the temperature of a fluid drops from 30 to –20°C. Can this process…

A: Yes, the process can occur adiabatically.

Q: A piston-cylinder arrangement contains 0.54-kg nitrogen and receives 11.697 kJ of heat isothermally.…

A: GIVEN DATA MASS m=0.54kg HEAT Q=11.697KJ P1=441.3KPa T1=121.2'C = 121.2+273=394.2K WE HAVE TO FIND…

Q: 240.C steam expands isentropically from 1.5 MPa to 150 kPa. Determine the work done per unit mass of…

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Q: A piston–cylinder device with a set of stops initially contains 1.5 moles of gas at 1.00 MPa and…

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Q: Steam is contained in a 2-L volume at a pressure of 2.0 MPa and a temperature of 400°C. If the…

A: Givenvolume of the steam v=2ltr=2×10-3 m3pressure, P=2MPatemperature T=400oCheat added Q=20kJ

Q: A 0.68 m3 rigid tank contains refrigerant-134a initially at 100 kPa and 40 percent quality. Heat is…

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Q: Thermodynamic problem. Determine the work necessary to compress a gas from an initial volume VI=90L…

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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: air is cooled during an isobaric process at 4.39 atm from initial specific volume of 1.2 m3/kg to a…

A: For solution refer below images.

Q: The decrease in internal energy of 3 lb of an ideal gas is 325 BTU when the pressure decreases from…

A: Internal Energy: The energy that is associated with the random and disordered motion of the…

Q: Determine the internal energy of the steam in btu if the mass is 8 lb, pressure is 354.24 kpa,…

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Q: A certain gas having a mass of 0.91 kg, with a value of Cp = 5.234 and Cv = 3.157 kJ/kg-K, at an…

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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: A certain oxygen cylinder has a capacity of 250 litres and contains oxygen at a pressure of 3 MPa…

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Q: The volume of a monatomic ideal gas doubles in an adiabatic expansion. By what factor do (a) the…

A: Given: Monoatomic ideal gas Adiabatic expansion V2=2V1 To determine: At what factor Temperature and…

Q: Air expands in a gas turbine from 590kPa to 102kPa. The expansion obeys the law pv1.27 = C the…

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Q: Describe the equilibrium condition in terms of the entropy changes of a system and its surroundings.…

A: Given Data⇒Equilibrium condition in terms of the entropy changes of a systemProblem…

Q: An Insulated rigid tank containing 0.25 m3 of air at 50 oC and 1.5 Bar. If a paddle wheel with a…

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Q: Air inside a cylinder has increased its pressure from 100 KPa to 200 KPa. Evaluate the amount of…

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Q: Ammonia with MW=17, weighing 22kg is confirmed inside a cylinder equipped with a piston has initial…

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Q: A piston-cylinder device initially contains air at 150 kPa and 27 ° C. At this state, the piston is…

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Q: 0.2 m3 of a gas at 105 kPa and 27 0C is compressed until the temperature is 282 0C and the…

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Q: Saturated vapor at 60°C is put under pressure to decrease the volume by one percent during an…

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Q: How much work is done when 10 ft of an air is initially at a pressure of 1 atm and a temperature of…

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Q: 1 kg of gas occupying 0.19 m' at a pressure of 15 bar is heated at constant pressure until its…

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Q: Two rigid tanks are connected by a valve. Tank A contains 0.2 m3 of water at 400 kPa and 80 percent…

A: Given Tank A Volume = 0.2 m3 Pressure = 400 kPa Quality = 80% = 0.8 Tank B Volume = 0.5 m3 Pressure…

Q: A piston cylinder containing steam at 700 kPa and 250 degree Celsius undergoes constant pressure…

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Q: Q1. A piston cylinder contains an ideal gas. The gas expands isothermally. Which statement is true…

A: Given a piston cylinder contains an ideal gas Given process is isothermal Which means constant…

Q: Initially, 200 L of saturated vapor refrigerant-134a in a piston. The piston is free to move, and…

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Q: A rigid vessel contain 5kg of wet steam at 0.4Mpa. After the addition of 9585KJ the steam has a…

A: According to the information we have 5kg of moist steam at 0.4Mpa is contained in a rigid vessel.…

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.