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- When performing a combustion efficiency test, digital flue gas will measure what four parameters?____________, and________.7. Describe the difference(s), if any, between pre-mixed and diffusion type combustion. Please select all answers that apply: a) In pre-mixed type combustion, the fuel and oxidizer are mixed before entering the combustion chamber. b) In diffusion type combustion the fuel and oxidizer enter the combustion chamber from two separate inlet streams. c) In pre-mixed combustion the fuel and oxidizer enter the combustion chamber through a single stream. d) In diffusion combustion, the fuel is injected through a nozzle. e) In diffusion combustion, the oxidizer swirls around the fuel nozzle.H1. Assume that 3.75 kg/s of air, at 750k and 20 bars, enters the premix chamber of a combustor. The target temperature inside the combustion chamber is 1900K. The following cases are to be analysed a) 100% Methane b) Blends of Methane and Hydrogen, with 30%-50% and 80% H2 by volume c) 100% Hydrogen For each case assume that Nitric Oxide (NO) is present in the products and is in equilibrium Calculate i. The mass flowrate of fuel required for each case ii. The resulting parts-per million of NO produced for each case
- A Methanol pool fire shows a fuel mass loss rate of 0.01 kg/s on a load cell Estimate the heat release rate Assume a combustion efficiency of 08 The heat of combustion of Methanol can be obtained from the text book (Table 76) O A 160 KW O B. 20000 KW OC. 200 kW O D. 16000 kW QUESTION 2 Estimate the heat release rate for a keroene pool fires with a mass loss rate of 0 123 kg/s Assume combustion officiency 08 O A. 2000 KW O B. 200 kW OC 4250 kW OD. 34500 KW QUESTION 3 If the diameter of the kerosene pool fire from the above question (Question 2) is2 m, estimate the flame hoight of the pool fire. O A.04 m OB.4 46 m OCB0M O D. 42mNatural gas with an analysis as follows CO2 = 0.4% CH4 = 97.3%, N2 = 2.3%, is burned in a furnace. The Orsat analysis of the flue gases shows: CO2-8.5%, 02-5.6 %, CO = 0.1% and the rest is Nitrogen. Find the percentage of excess air supplied to the furnace.q5) I need your help with the question attached.
- External Problem: Fuel, air and combustion Gasoline having a chemical formula CgH17 is burned in an engine at a fuel-air equivalence ratio = 1.19 and a temperature of 1000K. a) Write the stoichiometric combustion equation of the fuel; b) Write the reaction equation corresponding to the given fuel-air equivalence ratio.Within the cylinder of an internal combustion engine, gasoline with an ordinary octane rating (C8H18) is intended to burn with an excess of air equal to fifty percent. a) Please display the actual equation for combustion.b) You need to calculate the actual air fuel ratio.c) Figure out the mass of wet products of combustion produced per kilogram of fuel, as well as the mass of dry products of combustion produced per kilogram of fuelPart 1:Design a three-component gasoline blend. Specify the boiling temperature of your blend.Additionally, determine the Research Octane Number (RON), Motor Octane Number (MON), andAnti-Knock Index (AKI) for this blend. Lastly, evaluate whether this fuel is sensitive to combustionchamber geometry.Part 2:Hydrogen is utilized as a fuel in an experimental engine and is combusted with stoichiometricoxygen. Assume the reactants initiate at a temperature of 25°C. Write the balanced chemicalreaction equation for this combustion.Perform the following calculations:(a) Determine the fuel-air (fuel-oxygen) ratio.(b) Calculate the equivalence ratio for the combustion process.
- A) A natural gas-fired industrial boiler operates with an oxygen concentration of 3 mole percent. Determine the operating air-fuel ratio and the equivalence ratio. Treat the natural gas as butane B) Write the equation of pentane-air combustion and determine the stoichiometric air-fuel ratioProvide schematic diagram and complete solutions.A substance has a melting point of 20°C and a boiling point is 150°C. The latent heat of fusion of 3.5 x 104 J/kg and the latent heat.of vaporization of 7.0 x 10* J/kg. The specific heat for the solid phases is 600 J/(kg. °C). The specific heat for the liquid phase is 1050 J/(kg.°C) and the specific heat for the gas phase is 400 J/(kg.°C). The specific heat capacity for water is 4190 J/(kg.°C). Water has a melting point of 0°C and a boiling point is 100°C. What mass of water initially at a temperature of 70°C was added to 0.50 kg of the substance, at a temperature of 16°C, if the final temperature is measured to be 30°C.. Assume no heat was lost to the surroundings or the container. Give the mass in kg stated to 3 decimal places.