Carbon dioxide gas enters a throttling valve at 5 MPa and 100°C and leaves at 100 kPa. Determine the temperature change during this process if CO2 is assumed to be (a) an ideal gas and (b) a real gas.

Q: Three kg of helium gas at 100 kPa and 27°C are adiabatically compressed to 900 kPa. If the…

A: Given data: The mass of helium is, m=3 kg The initial pressure of helium is, P1=100 kPa The initial…

Q: Air compressed in a diesel engine from an initial pressure of 13 psia and a temperature of 120F to…

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Q: An insulated rigid tank is initially evacuated. A valve is opened, and atmospheric air at 95 kPa and…

A: The atmospheric pressure of the air is P1=95 kPa. The atmospheric temperature of the air is T1=17…

Q: Steam at a temperature of 300°C has a specific volume of 0.09765 m3/kg. Determine the pressure,…

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Q: The increase of enthalpy of a particular quantity of gas is 141.9 kJ when the pressure increases…

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Q: 1 kg of saturated liquid water at 85 C (degree Celsius) is being heated until it becomes saturated…

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Q: Neon is compressed from 100 kPa and 20°C to 500 kPa in an isothermal compressor. Determine the…

A: Given data as per the question Initial pressure = 100 kpa Final pressure = 500 kpa Temperature =…

Q: Air is expanded from 200 psia and 500°F to 100 psia and 50°F. Assuming constant specific heats,…

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Q: A 2-m3 rigid insulated tank initially containing saturated water vapor at 1 MPa is connected through…

A: Given data:

Q: A throttling steam calorimeter is an instrument used for the determination of the quality of wet…

A: Introduction: The steam dryness fraction measures the quantity of water in the steam. If steam…

Q: Determine the units of the quantity sbar/Ru, where sbar is the molar specific entropy and Ru is the…

A: This problem is related with the basic thermodynamics and units of molar specific entropy and…

Q: What happens when a saturated vapor is heated at constant pressure? What happens when it is…

A: Water is considered to be in the state of saturated vapor when it contains all the composition of…

Q: Which of the two gases—helium or nitrogen—has the higher final temperature as it is compressed…

A: Given data

Q: Steam enters an isothermal compressor at 400 C and 100 kPa. The exit pressure is 10 MPa. Determine…

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Q: A hot stream and a cold stream of helium enter a mixing chamber. Their temperatures are 800°C and…

A: Given that, Temperature of hot stream, Th=800 °C,Temperature of cold stream, Tc=20 °C,Pressure of…

Q: An insulated rigid tank contains 4.4 lbs of saturated liquid-vapor mixture of water at 100 kPa. An…

A: Givenm=4.4lbs=4.4×0.453592kg=1.99581kgP=100kPax=25%=0.25

Q: R134a at 100F and 30psi is cooled off until it is a saturated liquid at the same pressure. What is…

A: Initial state of R-134a, P1=30 psi, T1=100 F Final state of R-134a, P2=P1=30 psi, saturated liquid

Q: A 3000 cm3 tank initially contains compressed air at 600 kPag and 28 oC. Determine the mass of air…

A: Given data: Temperature of the air remains constant

Q: Air at an initial state of 100 kpa and 17 degree Celsius is compressed to a final state of 600 kpa…

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Q: An ideal gas is compressed isothermally from 100 kPa to 170 kPa. The percent increase in the density…

A: Given: The initial pressure of a gas, P1 = 100 kPa The final pressure of gas, P2 = 170 kPa

Q: What is the specific enthalpy (kJ/kg) and specific entropy (kJ/kg-K) of a steam with a specific…

A: Given Data: Pressure, P=2.25 MPa Specific volume, v=125x10-3 m3/kg

Q: steam initially at 200 kPa and 3000C. The steam is now cooled while being stirred until its volume…

A: First Step is To Write The Given Data. And We need To Take Some data from Steam table So Please…

Q: 9.2- lbm of water at 300 psia fill a weighted pistoncylinder device whose volume is 2.5 ft. The…

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Q: Determine the specific volume, specific entropy and specific internal energy of steam at a pressure…

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Q: Saturated R-134a vapor enters a compressor at 68F. At compressor exit, the specific entropy is the…

A: Write the given information. Write the properties of R134a at 68°F.

Q: Determine the enthalpy of steam at 127C, at 75% quality, and flowing at the rate of 70 kg/h, if it…

A: Answer: (a) The enthalpy of steam at 127℃ and 75% quality is 2170.3235 kJ/kg. (b) The volume of…

Q: What is the difference between entropies of oxygen at 180 kPa and 39°C and oxygen at 180 kPa and…

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Q: a throttling steam calorimeter is an instrument used for the determination of the quality of wet…

A: P1= 200 psiaP2= 15 psiaT2= 300 FProcess 1-2: Throttling process

Q: A 0.55-ft3 well-insulated rigid can initially contains refrigerant-134a at 90 psia and 30°F. Now a…

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Q: (a) Using the Beattie-Bridgeman equation, determine the final pressure of carbon dioxide when it is…

A: Since we are allowed to answer one question at a time. We’ll answer the first question since the…

Q: Oxygen at 300 kPa and 90°C flowing at an average velocity of 3 m/s is expanded in an adiabatic…

A: Given: The initial pressure of the oxygen is P1=300 kPa. The initial temperature of the oxygen is…

Q: R-134a vapor enters into a turbine at 250 psia and 175°F. The temperature of R-134a is reduced to…

A: Given: The initial pressure and temperature of the turbine is P1=250 psi=1.724×106 Pa and T1=175…

Q: Steam at 500 kPa and a quality of 90 percent occupied a rigid vessel of volume 0.3m'. Calculate the…

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Q: Steam enters an isothermal compressor at 350°C and 100 kPa. The exit pressure is 10 MPa. Determine…

A: T1 = 350 deg C T2 = 350 deg C (isothermal) P1 = 100 kPa P2 = 10 MPa

Q: A 200-m3 rigid tank contains compressed air at 1 MPa and 300 K. Determine how much work can be…

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Q: Helium is to be compressed from 105 kPa and 295 K to 700 kPa and 460 K. A heat loss of 15 kJ/kg…

A: Given Pi = 105 kPa Ti = 295 K Pf = 700 kPa Tf = 460 K Qab = 15 kJ/Kg m' = 60 Kg/min To find Power…

Q: Determine the quality of steam at 143.27 kPa after a loss of  270 kJ/kg from the saturated steam…

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Q: At t = 280 degrees celcius and S = 5.72 Kj/kg-K. Determine the Enthalpy and Internal Energy with the…

A: The first law of thermodynamics asserts that even if a system's total energy is changed from one…

Q: Determine the enthalpy of liquid water at 100°C and 15 MPa (a) by using compressed liquid tables,…

A: Given: The value of temperature is T=100 ⁰C. The value of pressure is P=15 MPa. Part (a) Refer the…

Q: Argon is accelerated in a nozzle from 32 m/s at 666 K to 441 m/s and 196 kPa. If the heat loss is…

A: Given: Inlet velocity (V1)=32m/sInlet Temperature (T1)=666KExit velocity (V2)=441m/sHeat loss…

Q: If the initial pressure of ideal gas at 110 kpa is compressed to one half its original volume and to…

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Q: Helium gas enters a nozzle whose isentropic efficiency is 94 percent with a low velocity, and it…

A: Given Data⇒Helium gasisentropic efficiencyη=94%=0.94Exit pressureP2=14 PsiaExit…

Q: A 0.8-m3 rigid tank contains carbon dioxide (CO2) gas at 250 K and 100 kPa. A 500-W electric…

A: Given Data⇒P1=100 KPaV=0.8 m3For CO2COnsider gas constant  R=0.189JkgT1=250 KP2=175 KPaProblem…

Q: • 0.05 kg of Steam at 100 kPa, dryness fraction of 0.85 is heated at constant pressure to a…

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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.