EBK THERMODYNAMICS: AN ENGINEERING APPR
8th Edition
ISBN: 8220100257056
Author: CENGEL
Publisher: YUZU
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 15.7, Problem 15P
n-Butane fuel (C4H10) is burned with the stoichiometric amount of air. Determine the mass fraction of each product. Also, calculate the mass of carbon dioxide in the products and the mass of air required per unit of fuel mass burned.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Propane (C3Hg) is burned with 34 percent excess air. Determine the mole fractions of each of the products. Also, calculate the mass of
water in the products per unit mass of the fuel and the air-fuel ratio. Use data from the tables.
, the mole fraction of O2 is .0455, and the mole
The mole fraction of CO2 is .0911 , the mole fraction of H₂O is 1214
fraction of N2 is 7420
.
The mass of water in the products per unit mass of fuel burned is 1.636
The air-fuel ratio is 20.39 kg air/kg fuel.
kg H₂O/kg C3H8.
Aliquid fuel has a composition (by volume) C2H6 16% and CH4 84%. It is burned
with theoretical amount of air required for stoichiometric mixture. Calculate the molecular
weight of the fuel and the fuel air ratio of the mixture. Also determine the composition
(weight basis) of the product of combustion (consider that H20 does not condense).
Ans:- 18.24 F/A = 0.059 ; CO₂ 15.7%; H₂O = 12% : N₂ =72.3%.
,
P
Chapter 15 Solutions
EBK THERMODYNAMICS: AN ENGINEERING APPR
Ch. 15.7 - How does the presence of N2 in air affect the...Ch. 15.7 - Prob. 2PCh. 15.7 - Prob. 3PCh. 15.7 - Is the airfuel ratio expressed on a mole basis...Ch. 15.7 - Prob. 5PCh. 15.7 - Prob. 6PCh. 15.7 - Prob. 7PCh. 15.7 - What does 100 percent theoretical air represent?Ch. 15.7 - Consider a fuel that is burned with (a) 130...Ch. 15.7 - Are complete combustion and theoretical combustion...
Ch. 15.7 - What are the causes of incomplete combustion?Ch. 15.7 - Which is more likely to be found in the products...Ch. 15.7 - Methane (CH4) is burned with the stoichiometric...Ch. 15.7 - Prob. 14PCh. 15.7 - n-Butane fuel (C4H10) is burned with the...Ch. 15.7 - Prob. 16PCh. 15.7 - Prob. 17PCh. 15.7 - 15–18 n-Octane (C8H18) is burned with 50 percent...Ch. 15.7 - In a combustion chamber, ethane (C2H6) is burned...Ch. 15.7 - Prob. 20PCh. 15.7 - Prob. 21PCh. 15.7 - 15–22 One kilogram of butane (C4H10) is burned...Ch. 15.7 - 15–23E One lbm of butane (C4H10) is burned with 25...Ch. 15.7 - Prob. 24PCh. 15.7 - A fuel mixture of 60 percent by mass methane (CH4)...Ch. 15.7 - A certain natural gas has the following volumetric...Ch. 15.7 - Prob. 27PCh. 15.7 - A gaseous fuel with a volumetric analysis of 45...Ch. 15.7 - Prob. 30PCh. 15.7 - 15–31 Octane (C8H18) is burned with dry air. The...Ch. 15.7 - Prob. 32PCh. 15.7 - Prob. 33PCh. 15.7 - Prob. 34PCh. 15.7 - Prob. 35PCh. 15.7 - Prob. 36PCh. 15.7 - Prob. 37PCh. 15.7 - Prob. 38PCh. 15.7 - Prob. 39PCh. 15.7 - Prob. 40PCh. 15.7 - Prob. 41PCh. 15.7 - Prob. 42PCh. 15.7 - Prob. 44PCh. 15.7 - Repeat Prob. 1546 for liquid octane (C8H18).Ch. 15.7 - Ethane (C2H6) is burned at atmospheric pressure...Ch. 15.7 - Reconsider Prob. 1550. What minimum pressure of...Ch. 15.7 - Calculate the HHV and LHV of gaseous n-octane fuel...Ch. 15.7 - Prob. 49PCh. 15.7 - Prob. 50PCh. 15.7 - Consider a complete combustion process during...Ch. 15.7 - Prob. 53PCh. 15.7 - Prob. 54PCh. 15.7 - Propane fuel (C3H8) is burned with an airfuel...Ch. 15.7 - 15–56 Hydrogen (H2) is burned completely with the...Ch. 15.7 - Prob. 57PCh. 15.7 - Prob. 58PCh. 15.7 - Octane gas (C8H18) at 25C is burned steadily with...Ch. 15.7 - Prob. 61PCh. 15.7 - Liquid ethyl alcohol [C2H5OH(l)] at 25C is burned...Ch. 15.7 - Prob. 63PCh. 15.7 - Prob. 64PCh. 15.7 - A constant-volume tank contains a mixture of 120 g...Ch. 15.7 - Prob. 67PCh. 15.7 - Prob. 68PCh. 15.7 - Prob. 69PCh. 15.7 - A fuel is completely burned first with the...Ch. 15.7 - Prob. 71PCh. 15.7 - Acetylene gas (C2H2) at 25C is burned during a...Ch. 15.7 - Octane gas (C8H18) at 25C is burned steadily with...Ch. 15.7 - Express the increase of entropy principle for...Ch. 15.7 - Prob. 81PCh. 15.7 - What does the Gibbs function of formation gf of a...Ch. 15.7 - Liquid octane (C8H18) enters a steady-flow...Ch. 15.7 - Benzene gas (C6H6) at 1 atm and 77F is burned...Ch. 15.7 - Prob. 87PCh. 15.7 - Prob. 88PCh. 15.7 - A steady-flow combustion chamber is supplied with...Ch. 15.7 - Prob. 91RPCh. 15.7 - 15–92 A gaseous fuel with 80 percent CH4, 15...Ch. 15.7 - Prob. 93RPCh. 15.7 - Prob. 94RPCh. 15.7 - Prob. 95RPCh. 15.7 - Prob. 96RPCh. 15.7 - Prob. 97RPCh. 15.7 - Prob. 98RPCh. 15.7 - Prob. 99RPCh. 15.7 - Prob. 100RPCh. 15.7 - A 6-m3 rigid tank initially contains a mixture of...Ch. 15.7 - Prob. 102RPCh. 15.7 - Propane gas (C3H8) enters a steady-flow combustion...Ch. 15.7 - Determine the highest possible temperature that...Ch. 15.7 - Prob. 106RPCh. 15.7 - Prob. 107RPCh. 15.7 - A steam boiler heats liquid water at 200C to...Ch. 15.7 - Repeat Prob. 15112 using a coal from Utah that has...Ch. 15.7 - Liquid octane (C8H18) enters a steady-flow...Ch. 15.7 - Prob. 111RPCh. 15.7 - Prob. 112RPCh. 15.7 - Prob. 113RPCh. 15.7 - Consider the combustion of a mixture of an...Ch. 15.7 - A fuel is burned steadily in a combustion chamber....Ch. 15.7 - A fuel is burned with 70 percent theoretical air....Ch. 15.7 - Prob. 123FEPCh. 15.7 - One kmol of methane (CH4) is burned with an...Ch. 15.7 - An equimolar mixture of carbon dioxide and water...Ch. 15.7 - The higher heating value of a hydrocarbon fuel...Ch. 15.7 - Acetylene gas (C2H2) is burned completely during a...Ch. 15.7 - Prob. 129FEPCh. 15.7 - A fuel is burned during a steady-flow combustion...
Knowledge Booster
Learn more about
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
- Ethane (C2H6) is burned with atmospheric air and the volumetric analysis of the dry products of combustion yields the following: 10% CO2, 1% CO, 3% 02 and 86% N2. Develop the combustion equation and determine (a) the percentage of the excess air (b) the air fuel ratio. (Solve for 100 kmol of dry products).arrow_forwardA hydrocarbon with an unknown composition (CxHy) is burned in dry air. The products are 9.6%CO2, 7.3%O2 and 83.1%N2. Determine the x/y ratio and the percentage theoretical air used.arrow_forward1 kmol C2H6 is burned with an unknown amount of air. At the end of combustion since it is known that there is 3 kmol free oxygen in the combustion products, the air fuel ratio and calculate the theoretical percentage of air used during this process.arrow_forward
- Ethane (C2H6) is burned completely with 25% excess air. Show the combustion reaction of fuel and air. Determine the actual air-fuel ratio in kgair/kgfuel.arrow_forwardC4Hs is burned in an engine with a fuel-rich air-fuel ratio. Dry analysis of the exhaust gives the following volume percents: CO2 = 14.95%, C4H8 0.75%, CO = 0%, H2 = 0%, O2 = 0%, with the rest being N2. Higher heating value of this fuel is QHHV = 46.9 MJ/kg. Write the balanced chemical equation for one mole of this fuel at these conditions. Calculate; a) Air-fuel ratio. b) Equivalence ratio. c) Lower heating value of fuel. [MJ/kg] d) Energy released when one kg of this fuel is burned in the engine with a combustion efficiency of 98%. [MJ]arrow_forward5. Dodecane is burned at constant pressure with 120% excess air. What is the air-fuel ratio for this process?arrow_forward
- the full combustion is at constant pressure and the temperature of the products is (3250°C). Calculate 19.2/1) at 300° C. The internal energy of Ethane is equal (AU.= - 47590 kJ/mole) at (25 °C). when B) A cylinder contains a mixture of Ethane (C₂H) and air and the ratio of air to fuel is (A/F= the heat transferred from the combustion. Take specific heat: Reactants (C2H6-1.7, 02= 22.3, N2- 21.2 KJ/mole.K) Products (CO2= 46.5, H2O(Vap)= 27.3, 02-25.5 KJ/mole.K), R= 8.314 KJ/mole.K.arrow_forwardDodecane is burned at constant pressure with 120% excess air. What is the actual air fuel ratio for this process? (A) 55 (B) 22 44 (D) 33arrow_forwardBy analyzing the fuel, it was found that it consists of 85% carbon, 5% hydrogen, and 2% oxygen. 2% sulfur, percentages by weight, and the rest is nitrogen. Calculate the weight of the (standard) air required for each kilogram of fuel in order to complete combustion, and if the real air increases by 25%, calculate the percentage of dry products by weight and volumearrow_forward
- PARTS A & B ( Justify correctly) Gaseous ethane C2H6 is burned at constant pressure P = 1atm. The reagents enter the reaction at 25°C, and the products are at 727°C. Determine the heat released by the system for ethane combustion with PART (a) the theoretical stechiometric amount of oxygen PART (b) the theoretical amount of air (air contains 3.76 kmol of nitrogen per 1 kmol of oxygen). In which case is the heat released by the system larger? Explain .arrow_forward2 PARTS ( A& B) solve carefully and Explain your reasoning Gaseous ethane C2H6 is burned at constant pressure P = 1atm. The reagents enter the reaction at 25°C, and the products are at 727°C. Determine the heat released by the system for ethane combustion with (a) the theoretical stechiometric amount of oxygen (b) the theoretical amount of air (air contains 3.76 kmol of nitrogen per 1 kmol of oxygen). In which case is the heat released by the system larger? Explain why.arrow_forwardTwo moles of octane are burned with stoichiometric amount of air. How much water is formed in the products if the combustion is complete?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Extent of Reaction; Author: LearnChemE;https://www.youtube.com/watch?v=__stMf3OLP4;License: Standard Youtube License