EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
9th Edition
ISBN: 9781119321453
Author: Sonntag
Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT
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Chapter 2, Problem 2.60P
To determine
The mass of air and the maximum pressure of air and identify if air behaves as an ideal gas at final state.
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I need the solution for this problem pls. Thanks a lot.
N2 gas enters a turbine at P = 275.79 kPa, 130°F and leaves at 101.353 kPa and 80°F. How much heat is lost if 8 Btu of work per lbm of nitrogen is produced?
Cp nitrogen = 3.5R where R = 1.9859 Btu/lbmol-oR.
a. 10.24 Btu per lbm of the gas
b. 4.41 Btu per lbm of the gas
c. None of the choices
d. 3.98 Btu per lbm of the gas
Q1:
A cylinder/piston contains 0.1m³ of air at 110 kPa, 25°C. The air is compressed in a
reversible polytropic process to a final state of 800 kPa, 200°C. Find the work done by
the air, the heat transfer and the total entropy change for the process.Sketch the process
on a P-V diagram.
Chapter 2 Solutions
EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
Ch. 2 - Are the pressure in the tables absolute or gauge...Ch. 2 - What is the minimum pressure for liquid carbon...Ch. 2 - When you skate on ice, a thin liquid film forms...Ch. 2 - Is it possible to have water vapor at 5 ?Ch. 2 - At higher elevations, as in mountains, air...Ch. 2 - Water at room temperature and room pressure has...Ch. 2 - Can a vapor exist below the triple point...Ch. 2 - Ice cubes can disappear and food can dry out...Ch. 2 - In Example 2.lb, is there any mass at the...Ch. 2 - Prob. 2.10P
Ch. 2 - Prob. 2.11PCh. 2 - How does a constant-v process for an ideal an as...Ch. 2 - Prob. 2.13PCh. 2 - As the pressure of a gas becomes larger, Z becomes...Ch. 2 - Carbon dioxide at 280K can be in three different...Ch. 2 - Find the lowest temperature at which it is...Ch. 2 - Water at 27C can exist in different phases,...Ch. 2 - Dry ice is the name of solid carbon dioxide. How...Ch. 2 - Prob. 2.19PCh. 2 - A substance is at 2MPa and 17C in a rigid tank....Ch. 2 - Prob. 2.21PCh. 2 - Determine the phase of water at a. T260°C.P5MPa b....Ch. 2 - Determine the phase of the substance at the given...Ch. 2 - Give the missing property of PvT and x for water...Ch. 2 - Prob. 2.25PCh. 2 - Determine whether refrigerant R410A in each of the...Ch. 2 - Prob. 2.27PCh. 2 - Fill out the following table for substance...Ch. 2 - Prob. 2.29PCh. 2 - Prob. 2.30PCh. 2 - Determine the specific volume for R410A at these...Ch. 2 - Place the three states ac listed in previous...Ch. 2 - Find P and x for CH4 at a. T=155K,v=0.04m3/kg b....Ch. 2 - Give the specific volume of carbon dioxide at 40C...Ch. 2 - You want a pot of water to boil at 105C . How...Ch. 2 - Water at 400kPa a quality of 75 has its pressure...Ch. 2 - Prob. 2.37PCh. 2 - Saturated water vapor at 200kPa is in a...Ch. 2 - Saturated liquid water at 60C is put under...Ch. 2 - A constant pressure piston cylinder has water at...Ch. 2 - A glass jar is filled with saturated water at...Ch. 2 - Prob. 2.42PCh. 2 - Saturated vapor R4l0A at 60C has to pressure...Ch. 2 - Prob. 2.44PCh. 2 - Ammonia at 20C with a quality of 50 and a total...Ch. 2 - Repeat the previous problem if the outlet valve is...Ch. 2 - R134a is in a sealed, rigid vessel of 2m3 as...Ch. 2 - A storage tank holds methane at 120K , with a...Ch. 2 - A 400m3 storage tank is being constructed to hold...Ch. 2 - Prob. 2.50PCh. 2 - Carbon dioxide at 6000kPa,40C is cooled in a...Ch. 2 - Prob. 2.52PCh. 2 - A 1m3 tank is filled with a gas at room...Ch. 2 - Prob. 2.54PCh. 2 - A pneumatic cylinder (a piston cylinder with air)...Ch. 2 - Is it reasonable to assume that at the given...Ch. 2 - Helium in a steel tank is at 250kPa,300K with a...Ch. 2 - A spherical helium balloon l0m in diameter is at...Ch. 2 - A glass is cleaned in hot water at 35°C and placed...Ch. 2 - Prob. 2.60PCh. 2 - Prob. 2.61PCh. 2 - A rigid tank of 1m3 contains nitrogen gas at...Ch. 2 - Assume we have three states of saturated vapor...Ch. 2 - Prob. 2.64PCh. 2 - Prob. 2.65PCh. 2 - Prob. 2.66PCh. 2 - A cy1inica1 gas tank 1m long, with an inside...Ch. 2 - Ammonia in a piston cylinder arrangement is at...Ch. 2 - Find the compressibility factor (Z) for saturated...Ch. 2 - Find the compressibility factor for methane at a....Ch. 2 - Find the compressibility for carbon dioxide at 60C...Ch. 2 - What is the percent error in specific volume if...Ch. 2 - Estimate the saturation pressure of R142b at 300K...Ch. 2 - A bottle a volume of 0.1m3 contains butane with a...Ch. 2 - Find the volume of 2kg of ethylene at 270K,2500kPa...Ch. 2 - Prob. 2.76PCh. 2 - Argon is kept in a rigid 5m3 tank at 30C and 3MPa...Ch. 2 - Prob. 2.78PCh. 2 - A new refrigerant, R152a . is stored as a liquid...Ch. 2 - Determine the pressure of nitrogen at...Ch. 2 - Prob. 2.81PCh. 2 - Determine the pressure of nitrogen at...Ch. 2 - Carbon dioxide at 60C is pumped at a very high...Ch. 2 - Prob. 2.84PCh. 2 - Prob. 2.85PCh. 2 - A tank contains 8.35kg of methane in 0.1m3 at 250K...Ch. 2 - Do the previous problem using the Redlich-Kwong...Ch. 2 - Prob. 2.88PCh. 2 - Determine the unknowns of T, v and x if two phase...Ch. 2 - Prob. 2.90PCh. 2 - Give the phase and the missing properties of P, T,...Ch. 2 - Refrigerant R410A in a piston/cylinder arrangement...Ch. 2 - Water in a piston cylinder is at 90C,100kPa , and...Ch. 2 - A tank contains 2kg of saturated ammonia vapor at...Ch. 2 - Prob. 2.95PCh. 2 - Prob. 2.96PCh. 2 - Determine the mass of methane gas stored in a 2m3...Ch. 2 - Prob. 2.98PCh. 2 - What is the percent error in pressure if the ideal...Ch. 2 - Prob. 2.100PCh. 2 - Use a linear interpolation to estimate the missing...Ch. 2 - Use a linear interpolation to estimate Tsat at...Ch. 2 - Use a double linear interpolation to find the...Ch. 2 - Cabbage needs to be cooked (boiled) at 250 F. What...Ch. 2 - Prob. 2.105EPCh. 2 - If I have 1ft3 of ammonia at 15psia,60F , what is...Ch. 2 - Prob. 2.107EPCh. 2 - Prob. 2.108EPCh. 2 - A substance is at 300lbf/in.2,65F in a rigid tank....Ch. 2 - For water at 1 atm with a quality of 10 find the...Ch. 2 - Prob. 2.111EPCh. 2 - Determine the phase of the substance at the given...Ch. 2 - Prob. 2.113EPCh. 2 - Prob. 2.114EPCh. 2 - Prob. 2.115EPCh. 2 - Give the missing property of P, T, v, and x for a....Ch. 2 - Saturated liquid water at 150F is put under...Ch. 2 - Prob. 2.118EPCh. 2 - You want a pot of water to boil at 220F . How...Ch. 2 - Prob. 2.120EPCh. 2 - Saturated vapor R4l0A at 100F has its pressure...Ch. 2 - Prob. 2.122EPCh. 2 - Prob. 2.123EPCh. 2 - A pressure cooker has the lid screwed on tight. A...Ch. 2 - Prob. 2.125EPCh. 2 - Repeat the previous problem if the outlet valve is...Ch. 2 - Prob. 2.127EPCh. 2 - Prob. 2.128EPCh. 2 - A cylindrical gas tank 3ft long, with an inside...Ch. 2 - A spherical helium balloon 30ft in diameter is at...Ch. 2 - Helium in a steel tank s at 36psia , 540R with a...Ch. 2 - A 35ft3 rigid tank has propane at 25psia,540R and...Ch. 2 - What is the percent error in specific volume if...Ch. 2 - Air in a car tire is initially at 10F and 30psia ....Ch. 2 - Prob. 2.135EPCh. 2 - Prob. 2.136EPCh. 2 - R4l0A at 200psia , 100F is cooled in a closed...Ch. 2 - Refrigerant- 410A in a piston cylinder arrangement...Ch. 2 - A substance is at 70F,300Ibf/in.2 in a 10ft3 tank....Ch. 2 - Estimate the saturation pressure of R142b at 540R...Ch. 2 - Determine the mass of an ethane gas stored in a...Ch. 2 - Determine the pressure of R410Aat100F,v=0.2ft3/ibm...Ch. 2 - Prob. 2.143EP
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- (b) Steam at 140 bar has an enthalpy of 3001.9 kJ/kg, find the temperature, specific volume and the internal energy.arrow_forwardA piston/cylinder arrangement initially contains air at 150 kPa, 400°C. The setup is allowed to cool to the ambient temperature of 20°C. a. Is the piston resting on the stops in the final state? What is the final pressure in the cylinder? b. What is the specific work done by the air during this process?arrow_forward5. The piston/cylinder as shown in figure 2 contains 0.1 kg water at 500 C, 1000 kPa. The piston has a stop at half of the original volume. The water now cools to a room temperature of 25°C. a. Sketch the possible water states in a P-v diagram. b. Find the final pressure and volume. c. Find the work in the process.arrow_forward
- Four kilograms per second of Methane is compressed isentropically from 104.3 kPa, 140 degree Fahrenheit to 440.6 degree Fahrenheit. Assuming that the process is for ideal gas, find: Final Pressure, torr Change in entropy Work, HParrow_forward9. Air is expanded from 400 kPa, 600 K in a polytropic process to 150 kPa, 400 K in a piston cylinder arrangement. Find the polytropic exponent n and the work and heat transfer per kg air using constant heat capacity.arrow_forwardThermodynamics Please help. With a clear T-s diagramarrow_forward
- A piston cylinder containes 0.1 kg air at 100 kpa, 126.85 C which goes through a polytropic compression process with n=1.3 to a pressure of 300 kpa. How much work has the air done in the process? I 8 13 !!arrow_forwardQ2: A piston/cylinder initially contains air at 150 kPa, 400°C. The setup is allowed to cool to the ambient temperature of 20°C. a. Draw the process on P-V diagram ? b. What is the final pressure in the cylinder? c. What is the specific work done by the air during this process? Assume V₂= 0.5 V₁, R=0.287 KJ/kg.K ark)arrow_forwardFind the dryness fraction, specific volume and internal energy of steam at 7 bar and enthalpy 2550 kJ/kg.arrow_forward
- 1. Find enthalpy if 5kg of certain gas go through a reversible non flow that has constant pressure process from initial volume 2.129m³and pressure of 700 kPa to a state where T2 550°C. A certain gas has R= 350J/kg-K and Cv = 0.94 kJ/kg-K a. 731.9675kJ b. 813.8610kJ c. 878.3610kJ d. 891.2610kJarrow_forward4. A) Wet steam at 200 deg C has a specific enthalpy of 2300 kJ/kg (in the 2 phase region). Determine the quality and specific volume and specific entropy of the mixture. B) Calculate change in entropy of an ideal gas that expands freely to twice its volume, assume isothermal reversible process. What is the work done in the process 2arrow_forwarda b c d earrow_forward
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