A rigid vessel contain 5kg of wet steam at 0.4Mpa. After the addition of 9585KJ the steam has a pressure of 2.0Mpa and a temperature of 700°C. Determine the initial specific volume and specific internal energy

Q: A 10 ft³ vessel of hydrogen at a pressure of 300 psia is stirred by paddles until the pressure…

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Q: Nitrogen at 100°C and 110 kPa with a volume of 1.8 m3 compressed using an isothermal process until…

A: Answer: (a) The work done during this process is -255.615 kJ ( Negative sign indicates work input is…

Q: A piston-cylinder device initially contains 0.4 m^3 of saturated water vapor at a pressure of 200…

A: Answer: The required voltage for the electric resistive heater is 22.3611 Volts.

Q: A tank contains 0.50 m^3/kg of steam. Heat is transferred at constant volume until the pressure…

A: GIVEN DATA VOLUME 0.50 m3/kg Pressure 100 KPa

Q: A piston/cylinder assembly with a spring contains 0.075 kg of water. The piston is initially resting…

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Q: A brick wall, 225 mm thick and having a thermal conductivity of 0.60 WI(m K), measures 10 m long by…

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Q: A piston-cylinder device initially contains 0.3 gm of steam at 200kPa and 400°C. Now the steam is…

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Q: A 1-m3 rigid volume contains water at 90°C with a quality of 0.8. Determine the final temperature if…

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Q: 0.5 kg of superheated steam (2bar and 200°C is compressed isothermally until it becomes saturated…

A: Mass of steam = 0.5 kg Superheated state = 2 bar, 200°C

Q: A frictionless piston-cylinder device initially contains 200L of saturated liquid refrigerant-134a.…

A: 1. Given, V1=200LP1=P2=900KPaT2=70°CFrom the steam table Properties of refrigerant R-134a at…

Q: A 15 liter rigid bottle contains 15 kg of the refrigerant R-134A and it is at a temperature of 20°C.…

A: Given that, Mass of the refrigerant R-134a, m=15 kg,Volume of bottle, V=15 liter,Temperature of…

Q: A rigid vessel contains 6 kg of wet steam at 0.4 MPa with a quality of 75% until the steam has a…

A: given data- m= 6 kg P1 = 0.4 MPa x1 = 75 % T2 = 300 deg C to determine- initial internal energy (U1…

Q: in a turbine gas expands such that the process is isentropic and the gas pressure decreases from…

A: GivenP1=900kPaP2=200kPaT1=375oC=375+273=648Kγ=1.4γ=1.3

Q: A piston/cylinder assembly with a spring contains 0.1 kg of water. The piston is initially resting…

A: Assumptions: For all states air behave as an ideal gas.Find:14Solution: State 1: P1 = 150 kPa, T1 =…

Q: Two kg of water at 105°C and a quality of 50% (i.e. x = 0.5) is first heated until the piston locks…

A: Given; m = 2kgT1=105°Cx1=0.5T3=90°Cx3=1

Q: In this example, water is contained in a rigid container with a tight fitting lid. With a pressure…

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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: Initially, a rigid tank contains 500L of water at 300°C. By volume, the tank contains 60% liquid and…

A: Qin+m1u1+m2u2-mfhf=0Qin=m2u2+mfhf-m1u1

Q: Argon in the amount of 1.5 kg fills a 0.04-m3 piston-cylinder device at 554 kPa. The piston is now…

A: Given data:- The mass of argon (m) = 1.5 kg                     The initial volume…

Q: The gage pressure of an ideal gas changes from 100 kPa to 200 kPa while maintaining a constant…

A: GIVEN DATA INTIAL GAUGE PRESSURE = 100KPa INTIAL VOLUME = 100L FINAL GAUGE PRESSURE =200KPa WE HAVE…

Q: A constant volume container holds 10 kg of air at a temperature of 20°C and a pressure of 150 kPa.…

A: Given Data

Q: Water is contained in a cylinder/piston arrangement fitted with upper stops which limit the volume…

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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: The gas is compressed from an initial state o 0.35 m and 105 kPa to a final state of 0.14 m and to…

A: Given: Isobaric compressionInitial volume of gas, V1=0.35 m3initial pressure of gas, P1=105 kPaFinal…

Q: Initially, a rigid tank contains 50OL of water at 300°C. By volume, the tank contains60% liquid and…

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Q: The system contains a gas at 300 kPa, with a volume of 0.2 m3 and at 40 °C. More gas is added added…

A: Given data:- P1=300 kPa, V1=0.2 m3 T1=40°C=(40+273)=313K T2=150°C=(150+273)K=423K compression…

Q: A 0.8-m3 rigid tank contains nitrogen gas at 600 kPa and 300 K. Now the gas is compressed…

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Q: e gage pressure of an ideal gas changes from 100 kPa to 200 kPa while maintaining a constant…

A: Given:P1=100 KPa (gauge)P2=200 KPaV1=100 L=0.1 m3

Q: A piston/cylinder assembly with a spring contains 0.1 kg of water. The pistor is initially resting…

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Q: An expansion valve is a part of an adiabatic rigid steam boiler. Steam's initial pressure and…

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Q: A rigid tank contains 15 kg of water at 75°C. If 3 kg the water is in the vapor form and the rest is…

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Q: A 12-ft3 tank contains oxygen at 15 psia and 80◦F. A paddle wheel within the tank is rotated until…

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Q: If in air at 60°C a body cools from 90°C to 80°C in 10 minutes, find the temperature 20 minutes…

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Q: An unknown gas (with PVT conditions of; 101 kPa, 2.83 m3 & 23°C) is to be transferred into a storage…

A: The initial temperature of the gas is, Ti=23°C. The initial pressure of the gas is, Pi=101 kPa. The…

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.