Two adiabatic chambers, 2 m3 each, are interconnected by a valve, with one chamber containing oxygen at 1000 kPa and 127°C and the other chamber evacuated. The valve is now opened until the oxygen fills both chambers and both tanks have the same pressure. Determine the total internal energy change and the final pressure in the tanks

Q: A piston–cylinder device initially contains 1.4 kg of refrigerant-134a at 100 kPa and 20°C. Heat is…

A: Given data

Q: An insulated rigid tank contains air (an ideal gas) at 500 kPa and 500 K. A valve connected to the…

A:

Q: A frictionless piston-cylinder device contains 4 kg of nitrogen at 100 kPa and 300 K. Nitrogen is…

A: Data given-  m = 4 kg  P1 = 100 kPa  T1 = 300 K  T2 = 340 K

Q: Air enters the compressor of a gas-turbine plant at ambient conditions of 100 kPa and 30°C with a…

A: Given Information:For air compressor

Q: Nitrogen gas is compressed from 80 kPa and 27°C to 480 kPa by a 10-kW compressor. Determine the mass…

A: Given: The initial pressure of the nitrogen gas in the compressor is P1=80 kPa The final pressure of…

Q: Steam enters a nozzle at 400°C and 800 kPa with a velocity of 10 m/s, and leaves at 300°C and 200…

A: Write the properties of steam at 800 kPa and 400°C. Write the properties of steam at 200 kPa and…

Q: The pressure of water is increased from 100 kPa to 900 kPa by a pump. The temperature of water also…

A: Given data as per question Initial pressure = 100 kpa Final pressure = 900 kpa Increase in pressure…

Q: eters the compressor as a saturated vapor at 10°C and leaves the compressor at 1400 kPa with an…

A:

Q: 0.01 kg/s of refrigerant R-12 enters an adiabatic compressor at a pressure of 125 kPa and a…

A:

Q: An insulated piston–cylinder device contains 0.05 m3 of saturated refrigerant- 134a vapor at 0.8-MPa…

A: Given data: The refrigerant inside the cylinder is R-134a The volume present inside the cylinder is…

Q: A piston–cylinder device initially contains 15 ft3 of helium gas at 25 psia and 70°F. Helium is now…

A: Given data: Initial volume, V1 = 15 ft3 Initial pressure, P1 = 25 psia Initial temperature, T1 =…

Q: The work required to compress 5 kg of air in an insulated cylinder from 200°C and 300 kPa to 800 kPa…

A: Write the given data. m=5 kgT=200 °C=473 KP1=300 kPaP2=800 kPa

Q: Two 10-ft adiabatic tanks are connected by a valve. Initially, one tank contains water at 450 psia…

A: Given Data Volume of each tank=10 ft³ Tank A:450 psia,x=0.1 Tank B:15 psia, x=0.75

Q: Steam flows steadily through a turbine at a rate of 45,000 lbm/h, entering at 1000 psia and 900°F…

A: Given data as per question Flow rate of steam =45000 lbm/h Entering pressure = 1000 psia Entering…

Q: Steam enters an adiabatic turbine at 8 MPa and 500°C at a rate of 3 kg/s and leaves at 20 kPa. If…

A: Given, P1 = 8 MPa T1 = 500°C  P2 = 20 kPa = 0.02 MPa m = 3 kg/s W = 2.5 MW = 2.5 x 103 kW T2 =?

Q: ) A piston – cylinder device initially contains 1 kg of saturated water vapor at 0.2 MPa. Water is…

A:

Q: Air enters a compressor at ambient conditions of 100 kPa and 20°C at a rate of 6.2 m3 /s with a low…

A: Mass flow rate for air can be determined by using ideal gas equation Work done on compressor in…

Q: A cylinder fitted with a piston has a volume 0.1 m3 and contains 0.5 kg of steam at 500 kPa. How…

A:

Q: Saturated liquid water is heated in a steady-flow steam boiler at a constant pressure of 2 MPa at a…

A: Given data: Inlet pressure ,P1 = 2 MPa Outlet temperature, T2 = 2500C Mass flow rate, m = 4 kg/s Now…

Q: A rigid tank of 0.22-m'volume initially contains saturated vapor refrigerant-134a at 1.2 MPa. The…

A:

Q: A hair dryer is basically a duct in which a few layers of electric resistors are placed. A small fan…

A: P1 = 100 kPa T1 = 295 K Q ˙= 1200 J/s T2 = 320 K A2 = 60 cm2 Control volume of a given problem is…

Q: A hair dryer is basically a duct in which a few layers of electric resistors are placed. A small fan…

A: Given Data:-                P =1200w                P1=100kPa                   T1 =22°C…

Q: Consider a device with one inlet and one outlet. If the volume flow rates at the inlet and at the…

A: Steady flow is the flow in which the fluid properties remain constant a given cross section along…

Q: Steam enters an adiabatic turbine at 5 MPa and 450°C and leaves at a pressure of 1.4 MPa. Determine…

A: Given data: The inlet pressure, P1 = 5 MPa. The outlet pressure, P2 = 1.4 MPa. The inlet…

Q: Liquid water at 120 kPa enters a 7-kW pump where its pressure is raised to 6.2 MPa. If the elevation…

A: Given Data  Power = 7000 W P1= 120 KPa. P2=6200 KPa v= 0.001 m3/Kg Elevation = 10m

Q: Steam, with a specific enthalpy of 2803 kJ/kg, is flowing through a pipe located 5 m above the…

A:

Q: Show that the law of the adiabatic process is given by PV ˠ = constant Where: (ˠ) is the ratio of…

A:

Q: Steam enters a turbine at 6 MPa and 450°C at a rate of 33 kg/s and exits at 50 kPa as saturated…

A:

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

A: Given, Before Heater is on, P1 = 100 kPa T1 = 250 K V1 = 0.8 m3 After Heater is on, P2 = 175 kPa…

Q: In an open system, 500 kg/h of air is being compressed from 100 kPa at  280 K to 600 kPa and 400 K.…

A:

Q: Nitrogen gas is compressed from 80 kPa and 27°C to 480 kPa by a 10-kW compressor. Determine the mass…

A: Given: The initial pressure of the nitrogen gas is P1=80 kPa. The final pressure of the nitrogen gas…

Q: A piston–cylinder device contains 0.85 kg of refrigerant134a at –10°C. The piston that is free to…

A: Given Data Mass of refrigerant-134a ,m= 0.85Kg mass of piston, M=12Kg Diameter of piston, D=25cm…

Q: A rigid tank is divided into two equal parts by a partition. One part of the tank contains 5.5 kg of…

A: Here, the mass of the compressed liquid water in first part of the tank (where the compressed liquid…

Q: Air enters a 28-cm diameter pipe steadily at 200 kPa and 20°C with a velocity of 5 m/s. Air is…

A: Pipe diameter, d=28 cm=0.28 mAir inlet condition: P1=200 kPa, T1=20oC, V1=5 m/sAir exit condition:…

Q: Steam enters a turbine steadily at 7 MPa and 600°C with a velocity of 60 m/s and leaves at 25 kPa…

A: Given: Inlet conditions:P1=7 MPaT1=600°CV1=60 m/sA1=150 cm2Exit Conditions:P2=25 kPaQ=-20…

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

A:

Q: A 0.06-m3 rigid tank initially contains refrigerant- 134a at 0.8 MPa and 100 percent quality. The…

A:

Q: Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of 0.7 m3…

A: The pressure of the saturated vapour at the inlet of the compressor is P1=100 kPa. The volume flow…

Q: Nitrogen gas is compressed from 80 kPa and 27°C to 480 kPa by a 10-kW compressor. Determine the mass…

A: Given: The initial pressure of nitrogen gas is P1=80 kPa. The final pressure of nitrogen gas is…

Q: A 0.05-m3 rigid tank initially contains refrigerant134a at 0.8 MPa and 100 percent quality. The tank…

A: Given Volume of tank = 0.05 m3 Pressure in tank = 0.8 MPa Quality = 100% Valve pressure = 1.2 MPa…

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: Argon gas enters an adiabatic compressor at 14 psia and 75F with a velocity of 60 ft/s, and it exits…

A: Data: Initial temperature,T1= 750F Initial pressure,P1 = 14 psia Final pressure, P2 =200 psia…

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: Carbon dioxide is compressed in a reversible, isothermal process from 100 kPa and 20°C to 400 kPa…

A: Given data: The initial pressure is Pi = 100 kPa. The final pressure is  Pf = 400 kPa. The…

Q: Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of 0.7 m3…

A: Given, Compressor inlet (saturated vapor), P1=100 kPa Q1˙=0.7 m3/min=0.760 m3/sec=0.0116 m3/sec…

Q: Refrigerant-134a at 140 kPa and –10°C is compressed by an adiabatic 1.3-kW compressor to an exit…

A: find out the final enthalpy by using R134a table…

Q: A rigid tank contains air at 500 kPa and 150°C. AS a result of heat transfer to the surroundings,…

A: Pressure P1 = 500 kpa Pressure P2 = 400 kpa Temperature T1 = 150 C Temperature T2 = 65 C

Q: Steam enters a nozzle at 400°C and 800 kPa with a velocity of 10 m/s, and leaves at 375°C and 400…

A: Solution:T1 = 400°C , P1 = 800 kPa   , V1 = 10 m/sT2 = 375°C , P2 = 400 kPa   , Q˙ = -25 kwA1 = 800…

Q: Air enters a 16-cm-diameter pipe steadily at 200 kPa and 20°C with a velocity of 5 m/s. Air is…

A:

Q: Air enters a compressor at ambient conditions of 15 psia and 60°F with a low velocity and exits at…

A: ambient condition, P=15 psiaT=60 oFExit condition, P=150 psiaT=620 oF

Q: Refrigerant-134a enters an adiabatic compressor as saturated vapor at 30 psia at a rate of 20 ft3…

A:

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.