Thermodynamics: An Engineering Approach
9th Edition
ISBN: 9781260048766
Author: CENGEL
Publisher: MCG
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Chapter 13.3, Problem 84P
To determine
The second-law efficiency of the plant.
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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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- A frictionless piston-cylinder device contains a saturated liquid-vapor mixture of water at 400K. During a constant pressure, process, 960 kJ of heat is transferred to the surrounding air at 300K. As a result, part of the water vapor contained in the cylinder condenses. Determine the total entropy generation during this process in kJ/K.arrow_forwardA frictionless piston-cylinder device contains a saturated liquid-vapor mixture of water at 400K. During a constant pressure, process, 960 kJ of heat is transferred to the surrounding air at 300K. As a result, part of the water vapor contained in the cylinder condenses. Determine the entropy change of the water in kJ/K.arrow_forward1. A refrigeration system using R-22 has a capacity of 320 kW of refrigeration. The evaporating temperature is -10°C and the condensing temperature is 40°C. Calculate the fraction of vapor in the mixture before the evaporator. Properties of R-22: At -10°C; hg = 401.60 kJ/kg, hf = 188.43 kJ/kg At 40°C; hf 249.69 kJ/kgarrow_forward
- A frictionless piston-cylinder device contains a saturated liquid-vapor mixture of water at 400K. During a constant pressure, process, 960 kJ of heat is transferred to the surrounding air at 300K. As a result, part of the water vapor contained in the cylinder condenses. Determine the entropy change of the surrounding air in kJ/K.arrow_forward1. A four -cylinder Carnot engine having a 90 x 120-mm bore and stroke operates between 420 deg C and 30 deg C . The engine rejects 20 KJ of heat to the atmosphere while running at 320 rpm . Determine the mean effective pressure in KPa 2.One kg of gas at 240 OC,expands adiabatically , so that its volume is doubled and the temperature falls to 115 OC . The work done during expansion is 90 KJ.Determine the molecular weight of this gas .arrow_forwardWhat is entropy and its application?arrow_forward
- It is proposed to have carbon dioxide (CO2) gas pass through an uninsulated nozzle. The CO2 is to enter at 253 K, 400 kPa, at a velocity of 9 m/s. The CO2 is to exit the nozzle at 468 K, 105 kPa, and a velocity of 146 m/s. The mass flow rate of the CO2 is 0.33 kg/s. The nozzle surface is maintained at 393 K. From the data give the heat trasfer rate dtermined is____ k..... to 2 d.p. Use cold-air standard analysis and Take R= 0.1889 kJ/kgK and Cp=0.846 kJ/kgKarrow_forwardIt is proposed to have carbon dioxide (CO2) gas pass through an uninsulated nozzle. The CO2 is to enter at 307 K, 400 kPa, at a velocity of 6 m/s. The CO2 is to exit the nozzle at 382 K, 105 kPa, and a velocity of 115 m/s. The mass flow rate of the CO2 is 0.25 kg/s. The nozzle surface is maintained at 350 K. The change in specific entropy is____ k..... to 40.864 d.p. Use cold-air standard analysis and Take R= 0.1889 kJ/kgK and Cp=0.846 kJ/kgK Provide the unit symbol.arrow_forwardA thermal plant utilizes 125 gallons of 28oAPI fuel at 26oC in 24 hours while the power guarantee for the same period amounts to 2300 kW-hrs. Determine the thermal efficiency of the plant.arrow_forward
- Octane is heated in a heat exchanger under constant pressure of 10 bar from 200 K to 400 K. Use the SRK equation to calculate the change in entropy of the system. Report your answer in units of J/(mol K) using three decimal places. The ideal gas heat capacity of octane may be assumed constant and CPig/R=23.174. Under these conditions octane is a liquid.arrow_forwardEstimate the Joule-Thomson coefficient of refrigerant-134a at 240 kPa and 20°C. Assume the second state will be selected for a pressure of 200 kPa. Use data from the tables. The Joule-Thomson coefficient of refrigerant-134a is K/kPa.arrow_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_forward
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