An isothermal compression process is used in air flowing at 10 kg mol/s at 28°C and 25 psia to 75 psia. Determine the power (in MW) required if the mechanical efficiency is 60% and Cp/Cv = 1.4.

Q: rate of 15 m3³/s. If heat is lost from the gas in the duct to the surroundings at a rate of 51 kW,…

A: Given data; A gas is heated in a duct as it flows over a resistance heater,    consider electric…

Q: A paddle wheel supplies 236 kJ of work to the air contained in a 0.5 m3 insulated rigid volume, the…

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Q: Steam enters an adiabatic turbine at 6 MPa and 300°C and exits at 20 kPa pressure and x=0.75…

A: Ideal gas equation:- Ideal Gas Equation is the equation defining the states of the hypothetical…

Q: Superheated steam enters turbine at 360 oC and 500 kPa and exits at 8 kPa. Calculate the state at…

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Q: An isentropic steam turbine processes 2 kg/s of steam at 3 MPa, which is exhausted at 100 kPa and…

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Q: A variable-load piston-cylinder device contains air (cp = 1.005 kJ/kgK; cv = 0.718 kJ/kgK) at 500…

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Q: A compressor operating with 7.7 kg/s water vapour with a compression ratio (P2/P1) equal to 3.0 is…

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Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A: The initial volume is The initial pressure is .The initial temperature is .The final pressure is…

Q: A diatomic gas in 15-L rigid container at 25 ⁰C and 4.8 atm is heated to 40 ⁰C. Determine the change…

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Q: Water initially at 20 °C and having a mass of 100 kg is to be heated to 100°C in a boiler using…

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Q: For an adiabatic air compressor that has an inlet temperature of 300 K and exit temperature of 500…

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Q: A gasoline engine is at a location where the temperature is measured to be 14.2 °C and produces 347…

A: Gasoline engine: The gasoline engine is an internal combustion engine in which the air-fuel…

Q: Beal eyeks A 0.8-m insulated rigid tank contains 2 kg of carbon dioxide at 90 kPa. Now paddle- wheel…

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Q: A pipeline carries a flow of 60.34 m3/min of steam at 1.00 MPa and 20.09°C superheat. Determine the…

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Q: Saturated vapor enters the turbine at 8.0 MPa and exits 0.008 MPa. The turbine has an isentropic…

A: To find: The electrical power produced. Given: The seam enters the turbine at P1=8 MPa. The exit…

Q: Before the widespread use of mechanical refrigeration, cooling was provided by ice, which was…

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Q: .2 kg/min of air (R=0.287, Cp=1.0062 kJ/kg.K and k =1.4) are compressed isothermally from 30 deg C…

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Q: Consider an isothermal expansion of 2 lb/sec of air from 100 psia and 90°F to 15 psia. If the…

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Q: Refrigerant 12 is expanded steadily in an isothermal (constant temperature) process. The flow rate…

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Q: Determine the ratio of work steady flow for isobaric process to the work steady flow for polytropic…

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Q: At P = 0.5 MPa and H = 990 kJ/kg, explain why steam exists as a wet steam.

A: Given Data P = 0.5 MPa  H = 990 kJ/kg,

Q: A gasoline engine is at a location where the temperature is measured to be 14.2 °C and produces 347…

A: Gasoline engine:The gasoline engine is an internal combustion engine in which the air-fuel…

Q: a turbine at 1100 kpa , dry and saturated . The steam is exhausted from the turbine at 200 kpa and…

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Q: Solar thermal water heater is feeding a water tank of 0.32 m. The final temperature is maintained at…

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Q: Helium (R=0.4968 BTU/lbm-R) is compressed isothermally from 14.7 psią and 68°F. The compressed…

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Q: Refrigerant-134a at 1.4 MPa and 90°C is throttled to a pressure of 0.6 MPa. The temperature of the…

A: Throttling is a process in which the fluid is allowed to pass through a restricted passage and…

Q: psia to a saturated steam with a quality of  x= 93% in an isentropic process.  What is the pressure…

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Q: Refrigerant-134a enters an adiabatic compressor at -26°C as a saturated vapor at a rate of 0.45…

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Q: It is well-known that the temperature of a gas rises while it is compressed as a result of the…

A: Given: The maximum temperature of the compressor, Te = 250oC The maximum recorded temperature in Los…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

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Q: Air is compressed in an adiabatic compressor. Inlet and outlet conditions are 120kPa, 30 oC and 20…

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Q: Refrigerant-134a enters an adiabatic compressor at -26°C as a saturated vapor at a rate of 0.45…

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Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

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Q: velocity and exits at 1 MPa and 347°C with a velocity of 90 m/s. The compressor is cooled at a rate…

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Q: A turbine takes in 550 degrees Celsius (13 MPa) steam and produces 1750 kW rate of work at 80% steam…

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Q: I want to know how this four pressures and enthalpies are selcected

A: Since in solution we have given Four pressure values: and

Q: The refrigerant R-134a enters the compressor of a refrigeration machine at a pressure of 140kPa and…

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Q: Water is heated with the aid of a diesel furnace. 2kg of diesel fuel is required for every 300…

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Q: A-C line Liquid R-134a A rigid container containing 6.6 kg of saturated liquid R-134a at 24°C is…

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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.