RP-1 is highly refined form of kerosene used for many first stage rocket engines. The averagecomposition of it is indicated by CH1.9a.What is the stoichiometric mixture ratio (MR) for RP-1 and oxygen?b. Now, you have a mixture of air and RP-1 with three times more air (in terms of moles)than is needed to burn all the fuel. How high is the final temperature? The heats offormation are given in the table below. In molar quantities, assume 1 mole of air is(O2+3.76N2). The reactants have a temperature of 25°C before combustion. You may usethe average values of the specific heats for each constituent.C. Would the adiabatic flame temperature be lower or higher for a rocket engine that usespure oxygen instead of air? Explain.ConstituentQf kJ/kmol @ 298 KCp kJ/kmol KCH199,358CO2 (g)-393,52251.9O2 (g)034.0N2 (g)031.6H₂0 (g)-241.82740.6

Approach to solving the question: Detailed explanation:a. To find the stoichiometric mixture ratio…

Answered: RP-1 is highly refined form of kerosene…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2. An automobile engine is being operated with pure methyl alcohol using 10% excess air over that necessary for theoretical combustion and securing substantially complete combustion of the fuel. A sample of the exhaust gases is removed from the exhaust pipe and carefully analyzed in the Orsat. What analysis would you Suspect to get? 3. Assume that in the operation of the engine in the previous problem, the air supply is reduced below in the theoretical value to the point such that 90% of the carbon in the fuel burns to CO2 and the remaining to CO. Assume also that under these conditions, the hydrogen in the gaseous combustion products is 40% of the CO in them, the oxygen being all consumed. Calculate the following: a. The Orsat analysis for the gases from the exhaust pipe b. The pounds of dry air required per pound fuel burnt c. The cubic feet of dry air that must be supplied to the engine per pound of fuel bumt, on the assumption that the barometer is normal and the air temperature is…
An engine operates on methanol with an equivalence ratio of 0.9. The air and fuel enter the engine at 298 K, and the exhaust is at 527 °C. The heat rejected to the coolant is 340 MJ/kmol fuel. (a) What is the enthalpy of the exhaust combustion products in kJ/kg.fuel? (b) What is the specific work output of the engine in kJ/kg.fuel? (c) What is the thermal efficiency of the engine?
Find the volume of the combustion products of 1 cu ft. Methane with 32% excess air at a pressure of 0.4 psi above atmospheric and a temperature of 1000 degree F.
Determine the theoretical weight of air needed in kgair/kgfuel if the fuel used has 40.3°API.
The heat of combustion of H2(g) to form H2O(l) under constant-pressure conditions is -285.83 kJ/mol at 25°C. If the water is formed at 1 bar and has a density of 1000 kg/m³, calculate the change in internal energy for this reactionA. -187 kJ/molB. -210 kJ/molC. -282 kJ/molD. -310 kJ/mol
Ql:- C4HS is burned in an engine with a fuel-rich air-fuel ratio. Dry analysis of the exhaust gives the following volume percents: COz 14.95%, C4HS 0.75%, CO 0%, Hz 0%, Oz 0%, with the rest being Nz. 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 the fuel. [MJ/kg] (d) The energy released when one kg of this fuel is burned in the engine with a combustion efficiency of 98%. [MJ]
Prob. # 3] A producer gas has the following percentage volumetric composition: CO2 = 10.8 %,CO = 18.3 %, CH4 = 3.10 %, O2 = 0.10 %, H2 = 12.9 %, N2 = 54.6 %, and C2H4 = 0.20.Calculate: a) the weight analysis by elements; b) the weight analysis by compound; and c) theair-fuel ratio for an excess air of 35 %.
Methane fuel is burned with air in a boiler system (open system). For this system, the HFK value for the air supplied to the combustion environment is 1.4. If the temperature and pressure of the air and fuel entering the combustion environment is 25 ° C and 1atm, we calculate the flue gas temperature value of the boiler, assuming that the boiler's thermal efficiency is 60%. All reacting species and reaction products are perfect gases. There is no water condensation in the products. METANAID = 50000 kJ / kg HFK = Air excess coefficient All reacting species and reaction products are excellent gas. Products "no water condensation.
1. A bituminous coal has the following composition as follows: C=71.5%, O=6%, S-4.6% W=3.4% H=5% N=1.3% Ash=3.2% Compute the amount of nitrogen produced during combustion process in lb/lb-coal. Also, determine the stoichiometric amount of air present in the combustion.
C,Hs is burned in an engine with a fuel-rich air-fuel ratio. Dry analysis of the exhaust gives the following volume percents: CO, 14.95%, C,H, 0.75%, CO 0%. H = 0%, O, 0%, with the rest being N. Higher heating value of this fuel is Quav 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]
What is the air-fuel ratio (mass basis) at 200 % excess air?
- Q₂) Find the stoichiometric air-fuel ratic for the combustion of C8H18 in petrol engine. Calculate the air fuel ratios for the extreme mixture strengths 75% and 130% > Determine the wet analysis by volume of the exhaust gas for each mixture strength. (Hint: mixture strength= stoichiometric (A/F) ratio/Actual (A/F) ratio).

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