Thermodynamics: An Engineering Approach
9th Edition
ISBN: 9781259822674
Author: Yunus A. Cengel Dr., Michael A. Boles
Publisher: McGraw-Hill Education
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Chapter 13.3, Problem 75P
To determine
Comment on the statement whether there can be any process to separate the mixture into its components by itself without any work input.
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In an adiabatic steady state control volume with two inlets and one outlet,
air and CO2 enter separately and are mixed; then, the mixture exits from the outlet. The
temperature and the pressure of air at the inlet are 305 K and 0.1 MPa and the volumetric flow
rate of air is 2 m/s. The temperature and the pressure of CO2 are 400 K and 0.1 MPa. The
temperature and the pressure of the mixture at the outlet are 320 K and 0.1 MPa. Determine,
a) The mass flow rates of air and CO2 at the inlet
b) The rate of entropy generation
1.
A rigid insulated tank is divided into two sections by a
membrane. One side contains 1.5 kg-of nitrogen at 200 kPa
and 320 K, and the other side contains 1.5kg of helium at 300
kPa and 400 °K. The membrane is removed. Determine (a) the
mixture temperature and pressure; (b) the change of entropy
for the system c) Cp of the mixture; d) Cv of the mixture;
e) volumetric analysis; f) MWm; g) Rm
Nitrogen
Helium
A vessel of 1.5 m3 capacity contains oxygen at 7 bar and 40°C. The vessel is connected to another vesselof 3 m3 capacity containing carbon monoxide at 1 bar and 15°C. A connecting valve is opened and the gases mix adiabatically. Calculate : (i) The final temperature and pressure of the mixture. (ii) The changein entropy of the system.Assume : For oxygen Cv= 21.07 kJ/mole KFor carbon monoxide Cv= 20.86 kJ/mole K.
[Ans. (i) 34°C, 3 bar ; (ii) 4.108 kJ/K]
That are the answers all i need is the correct solutions
Chapter 13 Solutions
Thermodynamics: An Engineering Approach
Ch. 13.3 - What are mass and mole fractions?Ch. 13.3 - Consider a mixture of several gases of identical...Ch. 13.3 - The sum of the mole fractions for an ideal-gas...Ch. 13.3 - Somebody claims that the mass and mole fractions...Ch. 13.3 - Consider a mixture of two gases. Can the apparent...Ch. 13.3 - What is the apparent molar mass for a gas mixture?...Ch. 13.3 - Prob. 7PCh. 13.3 - The composition of moist air is given on a molar...Ch. 13.3 - Prob. 9PCh. 13.3 - Prob. 10P
Ch. 13.3 - A gas mixture consists of 20 percent O2, 30...Ch. 13.3 - Prob. 12PCh. 13.3 - Prob. 13PCh. 13.3 - Consider a mixture of two gases A and B. Show that...Ch. 13.3 - Is a mixture of ideal gases also an ideal gas?...Ch. 13.3 - Express Daltons law of additive pressures. Does...Ch. 13.3 - Express Amagats law of additive volumes. Does this...Ch. 13.3 - Prob. 18PCh. 13.3 - How is the P-v-T behavior of a component in an...Ch. 13.3 - Prob. 20PCh. 13.3 - Prob. 21PCh. 13.3 - Prob. 22PCh. 13.3 - Consider a rigid tank that contains a mixture of...Ch. 13.3 - Prob. 24PCh. 13.3 - Is this statement correct? The temperature of an...Ch. 13.3 - Is this statement correct? The volume of an...Ch. 13.3 - Is this statement correct? The pressure of an...Ch. 13.3 - A gas mixture at 300 K and 200 kPa consists of 1...Ch. 13.3 - Prob. 29PCh. 13.3 - Separation units often use membranes, absorbers,...Ch. 13.3 - Prob. 31PCh. 13.3 - The mass fractions of a mixture of gases are 15...Ch. 13.3 - The volumetric analysis of a mixture of gases is...Ch. 13.3 - An engineer has proposed mixing extra oxygen with...Ch. 13.3 - A rigid tank contains 0.5 kmol of Ar and 2 kmol of...Ch. 13.3 - A mixture of gases consists of 0.9 kg of oxygen,...Ch. 13.3 - Prob. 37PCh. 13.3 - One pound-mass of a gas whose density is 0.001...Ch. 13.3 - A 30 percent (by mass) ethane and 70 percent...Ch. 13.3 - Prob. 40PCh. 13.3 - Prob. 41PCh. 13.3 - A rigid tank that contains 2 kg of N2 at 25C and...Ch. 13.3 - Prob. 43PCh. 13.3 - Prob. 44PCh. 13.3 - Prob. 45PCh. 13.3 - Is the total internal energy of an ideal-gas...Ch. 13.3 - Prob. 47PCh. 13.3 - Prob. 48PCh. 13.3 - Prob. 49PCh. 13.3 - Prob. 50PCh. 13.3 - The volumetric analysis of a mixture of gases is...Ch. 13.3 - A mixture of nitrogen and carbon dioxide has a...Ch. 13.3 - The mass fractions of a mixture of gases are 15...Ch. 13.3 - A mixture of gases consists of 0.1 kg of oxygen, 1...Ch. 13.3 - An insulated tank that contains 1 kg of O2at 15C...Ch. 13.3 - An insulated rigid tank is divided into two...Ch. 13.3 - Prob. 59PCh. 13.3 - A mixture of 65 percent N2 and 35 percent CO2...Ch. 13.3 - Prob. 62PCh. 13.3 - Prob. 63PCh. 13.3 - Prob. 66PCh. 13.3 - Prob. 67PCh. 13.3 - Prob. 68PCh. 13.3 - Prob. 69PCh. 13.3 - The gas passing through the turbine of a simple...Ch. 13.3 - Prob. 71PCh. 13.3 - A pistoncylinder device contains 6 kg of H2 and 21...Ch. 13.3 - Prob. 73PCh. 13.3 - Prob. 74PCh. 13.3 - Prob. 75PCh. 13.3 - Prob. 76PCh. 13.3 - Prob. 77PCh. 13.3 - Prob. 78PCh. 13.3 - Prob. 79PCh. 13.3 - Prob. 81PCh. 13.3 - Fresh water is obtained from seawater at a rate of...Ch. 13.3 - Is it possible for an adiabatic liquid-vapor...Ch. 13.3 - Prob. 84PCh. 13.3 - Prob. 85RPCh. 13.3 - The products of combustion of a hydrocarbon fuel...Ch. 13.3 - A mixture of gases is assembled by first filling...Ch. 13.3 - Prob. 90RPCh. 13.3 - Prob. 91RPCh. 13.3 - Prob. 92RPCh. 13.3 - A rigid tank contains a mixture of 4 kg of He and...Ch. 13.3 - A spring-loaded pistoncylinder device contains a...Ch. 13.3 - Prob. 95RPCh. 13.3 - Reconsider Prob. 1395. Calculate the total work...Ch. 13.3 - Prob. 97RPCh. 13.3 - Prob. 100RPCh. 13.3 - Prob. 101RPCh. 13.3 - Prob. 102FEPCh. 13.3 - An ideal-gas mixture whose apparent molar mass is...Ch. 13.3 - An ideal-gas mixture consists of 2 kmol of N2and 4...Ch. 13.3 - Prob. 105FEPCh. 13.3 - Prob. 106FEPCh. 13.3 - An ideal-gas mixture consists of 3 kg of Ar and 6...Ch. 13.3 - Prob. 108FEPCh. 13.3 - Prob. 109FEPCh. 13.3 - Prob. 110FEPCh. 13.3 - Prob. 111FEP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A vessel of 1.5 m3 capacity contains oxygen at 7 bar and 40°C. The vessel is connected to another vesselof 3 m3 capacity containing carbon monoxide at 1 bar and 15°C. A connecting valve is opened and the gases mix adiabatically. Calculate : (i) The final temperature and pressure of the mixture. (ii) The changein entropy of the system.Assume : For oxygen Cv= 21.07 kJ/mole KFor carbon monoxide Cv= 20.86 kJ/mole K.arrow_forwardA well-insulated rigid vessel, divided by a partition, has 0.2 kmol of carbon dioxide at 30 deg. C and 2 bar in one section and 3 kmol of hydrogen gas at 40 deg. C and 4 bar in the other section. The partition is removed and the gases mix. The specific heat capacity, pc of hydrogen and carbon dioxide are14.35 Jkg-1K-1 and 0.84 Jkg-1K-1 respectively. Determine the final equilibrium pressure of the gas mixture.arrow_forwardDefine “entropy” and discuss some of its implications;arrow_forward
- In a heating application, moist air enters a steam heating coil at 10°C, 50% RH and leaves at 30°C. Determine the sensible heat transfer, if mass flow rate of air is 100 kg of dry air per second. Also determine the steam mass flow rate if steam enters saturated at 100° C and condensate leaves at 80°C.arrow_forwardConsider 0.75 kg of N2 at 300 K, 1 bar contained in a rigid tank connected by a valve to another rigid tank holding 0.3 kg of CO2 at 300 K, 1 bar. The valve is opened and gases are allowed to mix, achieving an equilibrium state at 280 K. determine the entropy change of each gas and of the overall system, in kJ/K.arrow_forwardFrom a conditioned space 6000 cfm of air at 75 F(db) and =50% are recirculated and mix with 2000 cfm of outside air at 100 F(db) and 75 F(wb). The enthalpy of the resultant mixture is equal to 30.7 BTU/lb. O True O Falsearrow_forward
- Use the following Data for Nitrogen gas: R= 0.2968 kJ/kg.K, C,=1.0418 kJ/kg.K, C,=0.745 kJ/kg.K, Required: Draw consistent, clear and standard schematic for the problem representing the inlet and outlet conditions and label your schematic with the given operating conditions. Analyze the problem systematically using step-by-step CV energy and mass analyses, state your assumptions (wherever applicable), and determine the following (circle your final answers): (a) The specific volume and density at the inlet and exit of the compressor; (b) The difference in the specific enthalpy between the exit and inlet of the compressor assuming a constant specific heat Cp; (c) The specific heat loss from the compressor;arrow_forwardA stream of water at 300 kPa and specific volume of 0.2 m³/kg is mixed with another stream (water) at 300 kPa and 250 °C. The volume flow rate of the cold stream is 0.3 m³/s. The mixture leaves the mixing chamber at 200 °C. Required: Draw a standard and clear schematic of the problem and label the performance data on the schematic. Perform step by step energy and mass analyses, state your assumptions and determine the mass flow rate of the hot stream required.arrow_forwardA stream of 50 m3/min of outdoor air at 27°C dry-bulb temperature and 30%RH is adiabatically mixed with 100 m3/min of recirculated air at 43°C dry-bulb temperature and 38°C. Find the psychrometric properties of the resulting mixture. Then if this mixture is passed through a 15 m2 tunnel to mix again with 75 m3/min 15°C/10°C air stream what would be the resulting American effective temperature, work efficiency and comment on the possible dangers on human health if any.arrow_forward
- An ideal-gas mixture with a mass fraction of 5% hydrogen, 15% helium and 80% nitrogen enters an isentropic turbine at 5 MPa and 600°C and leaves at 200 kPa and 35°C. Calculate the work output of the turbine per unit mass of the mixture, in kJ/kg. (Assume: constant specific heats for all 3 components at room temperature) 1313.6 0.1313 1212.4 565arrow_forwardA mole sample of liquid ammonia at 273 Kelvin is cooled to liquid ammonia at 240 Kelvin. The process is done irreversibly by placing the sample in liquid nitrogen at 77 Kelvin. The heat capacity relationship for ammonia gas is given below. Assuming that the heat of vaporization is 23.4 KiloJoules per mole, answer the questions that follow. What is the entropy change of this process (in Joules per Kelvin)? Express answer in THREE SIGNIFICANT FIGURES. What is the entropy change of the surroundings for this process (in Joules per Kelvin)? Express answer in THREE SIGNIFICANT FIGURES. What is the total entropy change (or the entropy of the universe) for this process (in Joules per Kelvin)? Express answer in THREE SIGNIFICANT FIGURES.arrow_forwardExample 14.2. Calculation of the Work in a Batch Process One kilogram mole of N2 gas is in a horizontal cylinder at 1000 kPa and 20°C. A 6 cm2 piston of 2 kg mass seals the cylinder and is fixed by a pin. The pin is released, and the N, volume is doubled, at which time the piston is stopped again. What is the work done by the gas in this process?arrow_forward
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