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Thermodynamics An Interactive Approach 1st edition Subrata Bhattacharjee - Solutions

Estimate the Joule-Thomson coefficient (μJ) of nitrogen at (a) 200 psia, 500oR (b) 2000 psia, 400oR.
For β > = 0, prove that at every point of a single-phase region of an h-s diagram, the slope of a constant-pressure (p = constant) line is greater than the slope of a constant temperature (T = constant) line, but less than the slope of a constant-volume (β = constant) line.
Starting with the relation dh = Tds + vdp, show that the slope of a constant pressure line a h-s diagram (a) Is constant in the saturation region (b) Increases with temperature in the superheated region.
Derive relation for (a) Δu (b) Δh (c) Δs of a gas that obeys the equation of state (p + a/v2) v = RT for an isothermal process.
Show that cv = - T(∂v/∂T)s (∂p/∂T)v, and cp = T(∂p/∂T)s (∂v/∂T)P.
Determine the change in Enthalpy (Δh) and Entropy (Δs) of nitrogen as it undergoes a change of state from 200 K and 6 MPa to 300 K and 10 MPa by treating nitrogen as a perfect gas. What-if Scenario: What would the change in enthalpy be if nitrogen were modeled using The ideal gas, or Real gas
An insulated piston-cylinder device contains 0.1 kg of N2 and 0.2 kg of CO2 at 300 K and 100 kPa. The gas mixture is now compressed is entropically to a pressure of 1000 kPa. Determine The final temperature (T2) by treating the mixture as a perfect gas.
A rigid tank contains 3 m3 of argon at - 100oC and 1 MPa. Heat is transferred until the temperature rises to 0oC. Determine (a) The final pressure (p2) and (b) The mass of argon, (c) Heat transferred (Q). Use the real gas model.
A 0.5 m3 well-insulated rigid tank contains oxygen at 200 K and 9 MPa. A paddle wheel placed in the tank is turned on, and the temperature of the oxygen rises to 240 K. Determine (a) The final pressure in the tank and (b) The paddle-wheel work (W) done during the process. Use the RG Model (L-K
A closed, rigid, insulated vessel having a volume of 0.15 m3 contains oxygen initially at 10 MPa and 280 K. The oxygen is stirred by a paddle wheel until pressure increases to 15 MPa. Stirring ceases and the gas attains a final equilibrium state. Using the RG model (N-O charts), determine (a) The
Steam is throttled from 10 MPa, 400oC to 3 MPa. If the ambient temperature is 25oC, determine The change in temperature (ΔT) and The irreversibility for a flow rate of 1 kg/s. Use the real gas model.
Oxygen is throttled from 10 MPa, 400 K to 2 MPa. Using the RG model (L-K charts), determine: The change in temperature (ΔT).
Nitrogen gas enters a turbine at 7 MPa, 500 K, 100 m/s and leaves at 1 MPa, 300 K, 150 m/s at a flow rate (m) of 2 kg/s. Heat is being lost to the surroundings at 25oC at a rate of 100 kW. Determine (a) the power output (Wext) and (b) irreversibility. Use the real gas model. (c) What-if Scenario:
Nitrogen gas enters a turbine operating at steady state at 10 MPa, 26oC with a mass flow rate (m) of 1 kg/s and exits at 4 MPa, - 28oC. Using the RG model (N-O charts) and ignoring the heat transfer with the surrounding, determine (a) the work developed (Wext). (b) What-if Scenario: What would the
Methane at 9.3 MPa, 300 K enters the turbine operating at steady state at a mass flow rate (m) of 1 kg/s, expands adiabatically through a 6:1 pressure ratio, and exits at 225 K. KE and PE effects are negligible. Using the RG model (L-K charts), determine (a) the power developed (Wext) and (b) the
Argon gas enters a turbine operating at steady state at 10 MPa, 51oC with a mass flow rate (m) of 1 kg/s and expands adiabatically to 4 MPa, - 35oC with no change in KE or PE. Using the RG model (N-O charts), determine (a) the work developed (Wext) and (b) the entropy generated (Sgen). (c) What-if
Calculate Δv, Δu, Δh, and Δs for the following change of state of superheated steam: State-1: p1= 2 MPa, saturated vapor; State-2: p2= 33 kPa, 400oC. Compare the following models: (a) PC model (b) PG model (c) IG model (d) RG model (L-K) (e) RG model (NO). Your answers should be in a tabular
Air (79% N2 and 21% O2 by volume) is compressed isothermally at 500 K from 4 MPa to 8 MPa in a steady-flow compressor at a rate of 5 kg/s. Assuming no irreversibilities, determine the power input to the compressor. Treat air as a mixture of (a) perfect gases, (b) ideal gases and (c) real gases.
Methane is compressed adiabatically by a steady flow compressor from 3 MPa and - 15oC to 10 MPa and 100oC at a rate of 0.9 kg/s. Determine the power input (Wext) to the compressor. Use the real gas model.
Carbon dioxide enters an adiabatic nozzle at 10 MPa, 450 K with a low velocity and leaves at 3 MPa, 350 K. Using the RG model (N-O charts), determine (a) the exit velocity (V2).
An adiabatic 1 m3 rigid tank is initially evacuated. It is filled to a pressure of 10 MPa from a supply line that carries nitrogen at 275 K and 10 MPa. Determine (a) The final temperature (T2) (b) The mass in the tank. Use the real gas model.
Oxygen enters a nozzle operating at steady state at 6 MPa, 300 K, 1 m/s and expands isentropically to 3 MPa. Using the RG model (L-K charts), determine (a) The exit temperature (T2) (b) The exit velocity (V2).
One kmol of argon at 320 K is initially confined to one side of a rigid, insulated container divided into equal volumes of 0.2 m3 by a partition. The other side is initially evacuated. The partition is removed and argon expands to fill the entire container. Using the RG model (L-K charts),
Ex: 11-9 Nitrogen at 10 MPa and 150 K flows steadily through a tube with a mass flow rate (m⋅) of 1 kg/s, receiving heat from the surroundings at 300 K. At the end of the tube it enters an expansion valve and leaves at 1 MPa and 125 K. Using the real gas model determine (a) the rate of heat
Methane is isothermally and reversibly compressed by a piston-cylinder device from 1 MPa, 100oC to 4 MPa. Using the Lee-Kesler RG model, calculate The work done (wB) and Heat transfer per unit mass (q).
A cylindrical tank contains 4.0 kg of carbon monoxide at - 45oC has an inner diameter of 0.2 m and a length of 1 m. Using the RG model (L-K charts), determine the pressure exerted by the gas.
Methane is adiabatically compressed by a piston-cylinder device from 1 MPa, 100oC to 4 MPa. Calculate The work done per unit mass (wB). Assume the adiabatic efficiency to be 90%. Use the real gas model.
Propane is compressed isothermally by a piston-cylinder device from 1.5 MPa, 90oC to 4 MPa. Using the Nelson-Obert charts, determine (include sign) (a) The work done (wB) and (b) The heat transfer per unit mass of propane (q).
Methane is isothermally compressed by a piston-cylinder device from 1 MPa, 100oC to 4 MPa. Calculate The entropy generation (sgen) and The irreversibility associated with the process if the ambient temperature is 25oC. Use the real gas model.
A piston-cylinder device contains 2 kg of H2 and 14 kg of O2 at 150 K and 5000 kPa. Heat is then transferred until the mixture expands at constant pressure (why does the pressure remain constant?) until the temperature rises to 200 K. Determine The heat transfer (Q) by treating the mixture as
A piston-cylinder device contains 1 lbm of O2 and 9 lbm of N2 at 300oR and 900 psia. The gas mixture is now heated at constant pressure to 400oR. Determine The heat transfer (Q) during the expansion process by treating the mixture as a perfect gas mixture.
A gas mixture contains 5 kg of N2 and 10 kg of O2. Determine The average molar mass and Gas constant.
An insulated rigid tank is divided into two compartments by a partition. One compartment contains 8 kg of oxygen gas at 42oC and 100 kPa, and the other compartment contains 4 kg of nitrogen gas at 20oC and 180 kPa. The partition is then removed and the two gases are allowed to mix. Determine (a)
An insulated rigid tank is divided into two compartments by a partition. One compartment contains 4 kmol of O2, and the other compartment contains 5 kmol of CO2. Both gases are initially at 25oC and 150 kPa. The partition is then removed and the two gases are allowed to mix. Assuming the
An insulated rigid tank is divided into two compartments by a partition. One compartment contains 0.2 kmol of CO2 at 26oC, 180 kPa and the other compartment contains 3 kmol of H2 gas at 37oC, 340 kPa. The partition is then removed and the two gases are allowed to mix. Determine (a) The mixture
A rigid insulated tank is divided into two compartments by a membrane. One compartment contains 0.3 kmol of CO2 at 25oC and 100 kPa, and the other compartment contains 4 kmol of H2 gas at 40oC and 300 kPa. The membrane is then punctured and the two gases are allowed to mix. Determine (a) The
Two rigid, insulated tanks are interconnected by a valve. Initially 0.79 kmol of nitrogen at 200 kPa and 255 K fills one tank. The other tank contains 0.21 kmol of oxygen at 100 kPa and 300 K. The valve is opened and the gases are allowed to mix until a final equilibrium state is attained. During
1.1 m3 rigid tank is divided into two equal compartments by a partition. One compartment contains Ne at 22oC and 120 kPa, and the other compartment contains Ar at 50oC and 200 kPa. The partition is then removed, and the two gases are allowed to mix. Heat is lost to the surrounding air at 20oC
A rigid tank that contains 3 kg of N2 at 25oC and 250 kPa is connected to another rigid tank that contains 2 kg of O2 at 25oC and 450 kPa. The valve connecting the two tanks is opened, and the two gases are allowed to mix. If the final mixture temperature is 25oC, determine (a) The volume () of
An insulated rigid tank that contains 1 kg of CO2 at 100 kPa and 25oC and is connected to another insulated rigid tank that contains 1 kg of H2 at 200 kPa and 500oC. The valve connecting the two tanks is opened, and the two gases are allowed to mix. Determine (a) The final mixture pressure (pm) (b)
N2 at 100 kPa, 30oC with a flow rate of 100 m3/min is mixed with CO2 at 200oC, 100 kPa with a flow rate of 50 m3/min. Determine (a) The final temperature (T2) and (b) Rate of generation of entropy (Sgen). Assume the gases to behave as a perfect gas mixture.
An equimolar mixture of oxygen and nitrogen enters a compressor operating at steady state at 10 bar, 220 K with a mass flow rate (m⋅) of 1 kg/s. The mixture exits the compressor at 60 bar, 400 K with no significant change in KE or PE. The heat transfer from the compressor can be neglected. Using
A tank contains 3 kmol N2 and 7 kmol of CO2 gases at 25oC, 10 MPa. Based on ideal gas equation of state, determine (a) The average molar mass and (b) Volume () of the tank.
A mixture of 0.5 kg of carbon dioxide and 0.3 kg of nitrogen is compressed from 100 kPa, 300 K to 300 kPa in a polytropic process for which n = 1.25. Determine (a) The final temperature (T2) (b) The work (W) (c) The heat transfer (Q) (d) The change in entropy (ΔS) of the mixture.
Helium at 200 kPa, 20oC is heated by mixing it with argon at 200 kPa, 500oC in an adiabatic chamber. Helium enters the chamber at 2 kg/s and argon at 0.5 kg/s. If the mixture leaves at 200 kPa, determine (a) The temperature (T2) at the exit (b) The rate of entropy generation (Sgen) due to mixing.
Repeat problem 11-3-21 with argon entering the chamber at the same temperature as helium (all other conditions remaining the same). Problem 11-3-21 Helium at 200 kPa, 20oC is heated by mixing it with argon at 200 kPa, 500oC in an adiabatic chamber. Helium enters the chamber at 2 kg/s and argon at
Repeat problem 11-3-22 with argon replaced by neon, entering the chamber at the same temperature as helium (all other conditions remaining the same). Problem 11-3-22 Helium at 200 kPa, 20oC is heated by mixing it with argon at 200 kPa, 500oC in an adiabatic chamber. Helium enters the chamber at 2
Repeat problem 11-3-21 with the hot gas argon replaced by neon (all other conditions remaining the same). Problem 11-3-21 Helium at 200 kPa, 20oC is heated by mixing it with argon at 200 kPa, 500oC in an adiabatic chamber. Helium enters the chamber at 2 kg/s and argon at 0.5 kg/s. If the mixture
Hydrogen at 100 kPa, 25oC is mixed with oxygen in an adiabatic mixing chamber. The flow rate of hydrogen is 2 kmol/s and that of oxygen is 1 kmol/s. If the mixture leaves the chamber at 100 kPa, determine (a) The temperature at the exit (T2) (b) The rate of entropy generation (Sgen) in the device.
An insulated rigid tank that contains 1 kg of H2 at 25oC and 100 kPa is connected to another insulated rigid tank that contains 1 kg of He at 25oC and 100 kPa. The valve connecting the two tanks is opened, and the two gases are allowed to mix adiabatically. Determine The entropy generated (sgen)
An insulated rigid tank that contains 1 kg of O2 at 25oC and 500 kPa is connected to another insulated rigid tank that contains 1 kg of O2 at 25oC and 1000 kPa. The valve connecting the two tanks is opened, and the two gases are allowed to mix adiabatically. Determine The entropy generated (sgen)
An insulated rigid tank that contains 1 kg of CO2 at 300 K and 500 kPa is connected to another insulated rigid tank that contains 1 kg of CO2 at 400 K and 500 kPa. The valve connecting the two tanks is opened, and the two gases are allowed to mix adiabatically. Determine The entropy generated
Carbon-dioxide at 100 kPa, 25oC enters an adiabatic mixing chamber with a mass flow rate of 1 kg/s is mixed with hydrogen entering at 100 kPa and 25oC. Plot the entropy generated per unit mass of the mixture (sgen) as a function of mass fraction of hydrogen in the mixture (vary x from 0 to 1). (b)
A gas mixture consists of 9 kmol H2 and 2 kmol of N2. Determine (a) The mass of each gas and (b) The apparent gas constant of the mixture.
Repeat problem 11-3-29 with a completely different pair of gases. Can you come up with a generalized mixing criterion that maximizes entropy generation per unit mass or mole? Problem 11-3-29 Carbon-dioxide at 100 kPa, 25oC enters an adiabatic mixing chamber with a mass flow rate of 1 kg/s is mixed
Argon at 100 kPa, 600 K enters an adiabatic mixing chamber with a mass flow rate of 1 kg/s is mixed with nitrogen entering at 100 kPa, 600 K and 1 kg/s. (a) Determine the entropy generated per unit mass of the mixture (sgen). (b) Vary the inlet temperature of nitrogen (from 200 K to 2000 K) and
Repeat problem 11-3-31 with a completely different pair of gases. Can you come up with a generalized mixing curve where data from different pairs fall on the same line as far as entropy generation is concerned?
Argon at 1000 kPa, 300 K enters an adiabatic mixing chamber with a mass flow rate of 1 kg/s is mixed with nitrogen entering at 1000 kPa, 300 K and 1 kg/s. (a) Determine the entropy generated per unit mass of the mixture (sgen). (b) Vary the mixing pressure (from 10 kPa through 10 MPa) and plot sgen
Repeat problem 11-3-33 with a completely different pair of gases. Can you come up with a generalized mixing curve where data from different pairs fall on the same line as far as effect of pressure on entropy generation is concerned?
A rigid tank contains 4 kmol O2 and 5 kmol of CO2 gases at 18oC, 100 kPa. Determine (a) the volume () of the tank.
A mixture of CO2 and water vapor is at 100 kPa, 200oC. As the mixture is cooled at a constant pressure, water vapor begins to condense when the temperature reaches 70oC. Determine The mole fraction and The mass fraction of CO2 in the mixture.
A 0.4 m3 rigid tank contains 0.4 kg N2 and 0.7 kg of O2 gases at 350 K. Determine (a) The partial pressure of each gas and (b) The total pressure (p) of the mixture.
A 1 kmol mixture of CO2 and C2H6 (ethane) occupies a volume of 0.2 m3 at a temperature of 410 K. The mole fraction of CO2 is 0.3. Using the RG model (Kay's rule), determine the mixture pressure.
A mixture consisting of 0.18 kmol of methane and 0.274 kmol of butane occupies a volume of 0.3 m3 at a temperature of 240oC. Using the IG model, determine the pressure exerted by the mixture.
Determine the mass of 1 m3 air (N2: 79% and O2: 21% by volume) at 10 MPa and 160 K, assuming air as a perfect gas mixture.
Moist air at 12oC and 80% R.H. enters a duct at a rate of 150 m3/min. The mixture is heated until it exits at 35oC. The pressure remains constant at 100 kPa.Determine (a) The relative humidity at the exit. (b) The rate of heat transfer and
An air conditioning system is to take in air at 1 atm, 32oC, 65% relative humidity and deliver it at 22oC, 40% relative humidity. Air flows first over the cooling coils, where it is cooled and dehumidified, and then over the resistance heating wires, where it is heated to the desired temperature.
A saturated stream of carbon dioxide enters a dehumidifier with a flow rate of 100 m3/min at 39oC, 100 kPa. The mixture is cooled to 10oC by circulating cold water before being electrically heated back to 30oC. Determine (a) The rate of water removal in kg/min, (b) The cooling load, (c) The
Repeat problem 12-2-13 [ODD] above assuming the gas mixture to be composed of dry air and water vapor.
Moist air with dry and wet bulb temperatures of 20oC and 9oC, respectively, enters a steam-spray humidifier at rate of 100 kg of dry air/min. Saturated water vapor at 110oC is injected at 1 kg/min. The pressure remains constant at 100 kPa. Determine The inlet R.H. and Exit R.H.
Air at 110oF and 10% R.H. enters an evaporative cooler at a flow rate of 5500 ft3/min. Air leaves at 70oF. Determine (a) The mass flow rate of water and (b) The exit R.H. Assume the pressure (1 atm) and wet-bulb temperature to remain constant along the flow.
Air enters an evaporative cooler at 1 atm, 38oC and 15% relative humidity at a rate of 5 m3/min, and it leaves with a relative humidity of 80%. Determine (a) The exit temperature (T2) of the air, (b) The required rate of water supply to the evaporative cooler. (c) What-if Scenario: What would
Air enters an evaporative cooler at 1 atm, 34oC and 20% relative humidity at a rate of 8 m3/min, and it leaves at 21oC. Determine (a) The the final relative humidity and (b) The amount of water added to the air. (c) What-if Scenario: What would the answers be if air entered the evaporative
Air at 1 atm, 13oC and 55 percent relative humidity is first heated to 28oC in a heating section and then is passed through an evaporative cooler where its temperature drops to 22oC. Determine (a) The exit relative humidity and (b) The amount of water added to the air in kg H2O/kg dry air.
Air enters a heating section at 100 kPa, 9oC, 45% relative humidity at rate of 10m3/min, and it leaves at 22oC. Determine (a) The relative humidity at the exit. (b) The rate of heat transfer in the heating section and
Determine the adiabatic saturation temperature of air at 100 kPa, 30oC and 50% relative humidity.
A 150 m3/min stream of air at 30oC and 65% R.H. is mixed with a 50 m3/min stream of air at 5oC and 90% R.H. in an adiabatic mixing chamber. Determine (a) The R.H. at the exit. Assume pressure to be 1 atm.
Two airstreams are mixed steadily and adiabatically. The first stream enters at 28oC and 35% relative humidity at rate of 15 m3/min, while the second stream enters at 10oC and 90% of relative humidity at rate of 20 m3/min. Assuming that the mixing process occurs at a pressure of 1 atm, determine
During an air conditioning process 50 m3/min of conditioned air at 15oC and 33% relative humidity is mixed adiabatically with 10 m3/min of outside air at 32oC and 80% relative humidity at pressure of 1 atm. Determine (a) The temperature (T), (b) The specific humidity (ω) and (c) The relative
During an air conditioning process 800 ft3/min of conditioned air at 60oF and 40% relative humidity is mixed adiabatically with 200 ft3/min of outside air at 84oF and 85% relative humidity at pressure of 14.7 psia. Determine (a) The temperature (T), (b) The specific humidity (ω) and (c) The
A stream of warm air with a dry-bulb temperature of 38oC and wet-bulb of 30oC is mixed adiabatically with a stream of saturated cool air at 15oC. The dry mass flow rates of the warm and cool air streams are 8 kg/s and 6 kg/s, respectively. Assuming a total pressure of 1 atm, determine (a) The
Cooling water leaves the condenser of a power plant and enters a wet cooling tower at 35oC at a rate of 100 kg/s. The water is cooled to 22oC in the cooling tower by air which enters the tower at 100 kPa, 20oC, 60% R.H. and leaves saturated at 30oC. Neglecting the power input to the fan, determine
The cooling water from the condenser of a power plant enters a wet cooling tower at 45oC at a rate of 40 kg/s. The water is cooled to 22oC in the cooling tower by air which enters the tower at 1 atm, 20oC, 60% relative humidity and leaves saturated at 30oC. Neglecting the power input to the fan,
The cooling water from the condenser of a power plant enters a wet cooling tower at 105oF at a rate of 90 lbm/s. The water is cooled to 85oF in the cooling tower by air which enters the tower at 1 atm, 73oF, 50% relative humidity and leaves saturated at 90oF. Neglecting the power input to the fan,
A wet cooling tower is to cool 50 kg/s of water from 38oC to 24oC. Atmospheric air enters the tower at 1 atm with dry and wet-bulb temperatures of 20oC and 15oC, respectively, and leaves at 32oC with a relative humidity of 85%. Determine (a) the volume flow rate of air into the cooling tower and
A heating section consists of a 30 cm diameter duct which houses a 6 kW electric resistance heater. Air enters the heating section at 1 atm, 15oC and 33% relative humidity at velocity 8.5 m/s. Determine (a) The exit temperature (T2), (b) The exit relative humidity of the air and (c) The exit
A wet cooling tower is to cool 100 kg/s of cooling water from 45oC to 24oC at a location where the atmospheric pressure is 94 kPa. Atmospheric air enters the tower at 18oC and 65% relative humidity and leaves saturated at 32oC. Neglecting the power input to the fan, determine (a) the volume flow
A heating section consists of a 10 inch diameter duct which houses a 8 kW electric resistance heater. Air enters the heating section at 14.7 psia, 40oF and 35% relative humidity at a velocity of 21 ft/s. Determine (a) The exit temperature (T2), (b) The exit relative humidity of the air and (c)
Air enters a 30 cm diameter cooling section at 1 atm, 35oC and 40% relative humidity at 35 m/s. Heat is removed from the air at a rate of 1400 kJ/min. Determine (a) The exit temperature (T2), (b) The exit relative humidity and (c) The exit velocity (V2).
Air at 1 atm, 13oC and 50% relative humidity is first heated to 18oC in a heating section and then humidified by introducing saturated water vapor at 1 atm. Air leaves the humidifying section at 22oC and 60% of relative humidity. Determine (a) The amount of steam added to the air in kg H2O/kg dry
An air conditioning system operates at a total pressure of 1 atm consists of a heating section and humidifier which supplies wet steam (saturated water vapor) at 1 atm. Air enters the heating section at 15oC and 75% relative humidity at 60m3/min, and it leaves the humidifying section at 24oC and
Moist air at 40oC and 90% R.H. enters a dehumidifier at a rate of 300 m3/min. The condensate and the saturated air exit at 10oC through separate exits. The pressure remains constant at 100 kPa. Determine (a) The mass flow rate of dry air, (b) The water removal rate and (c) The required
Air enters a window air conditioner at 1 atm, 36oC and 75% relative humidity at a rate of 12m3/min and it leaves as saturated air at 18oC. Part of the moisture in the air which condenses during the process is also removed at 18oC. Determine The rate of heat and Moisture removal from the air.
Consider 100 m3 of moist air at 100 kPa, 35oC and 80% R.H. Calculate (a) The amount of water vapor condensed if the mixture is cooled to 5oC in a constant pressure process. Also calculate (b) The heat transfer (Q).
Calculate (a) The amount of water vapor condensed if the mixture in previous example is cooled to 5oC in a constant volume process. Also calculate (b) The heat transfer (Q).
A tank of volume 10 m3 contains dry air and water vapor mixture at 40oC and 100 kPa at a relative humidity of 90%. The tank is cools down to 10oC by transferring heat to the surroundings. Determine (a) The amount of water condensed and (b) The heat transfer (Q).
A 50 m3 insulated chamber containing air at 40oC, 100 kPa and R.H. 20% is connected to another 50 m3 insulated chamber containing air at 20oC, 100 kPa and R.H. 100%. The valve is opened and the system is allowed to reach thermal equilibrium. Determine (a) The final pressure (p3), (b) Temperature
A 50 m3 insulated chamber containing air at 5oC, 100 kPa and R.H. 100% is connected to another 50 m3 insulated chamber containing air at 22oC, 100 kPa and R.H. 100%. The valve is opened and the system is allowed to reach thermal equilibrium. Will there be condensation? (Answer 1 if Yes and 2 if No).
Methane is burned with the theoretical amount of air during a combustion process. Assuming complete combustion, determine the air-fuel ratio on. (a) Mass basis, (b) Mole basis. (c) Volume basis.
Octane, C8H18, is burned with theoretical amount of air at 500 kPa. Determine (a) The air fuel ratio on a mole basis. (b) The air fuel ratio on a mass basis. (c) IF the products are cooled at a constant pressure of 500 kPa, at what temperature will dew start to form? (d) Suppose the products are

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