Combustion is determined by what factor(s): Choose the best answer The amount of fuel mixed with...
Which statement relates to diesel combustion? Choose the best answer Diesel fuel requires a spark plug to ignite Diesel combustion and gas combustion are the same All statements relate to diesel combustion Compressed air gets hot enough to ignite diesel fuel
How do engines transfer combustion into useable energy? Choose the best answer. Using heat from compressed air to ignite the air-fuel mixture By having several cylinders ignite in sequence By the piston moving up and down in a four-stroke cycle By converting reciprocating motion into rotary motion
To achieve good combustion, air (oxygen) must be present and thoroughly mixed with fuel (waste) to produce CO2 and H2O. During combustion, 79% of inert Nitrogen interferes with combustion process. Thus a good combustion do require excess air beyond stoichiometric amount of air (oxygen). Excess air is also used for incinerator temperature control since it absorbs heat from the combustion reaction! 1900 lbs/hr of a waste mixture of 35% Benzene, 60% Toluene and 5% water is incinerated with 35% excess...
Consider following chemical reaction for the combustion of a fuel such as biodiesel in a diesel combustion engine: a C8H17COOCH3 + b O2 yields c CO2 + d H2O, where a, b, c, and d are integer stoichiometric coefficients. A) Balance the above chemical reaction using the smallest integer stoichiometric coefficients and clearly write the balanced chemical reaction. B) Using the stoichiometric coefficients determined in part A), calculate the theoretical molar stoichiometric air to fuel ratio, assuming that there is...
Regarding gas engine combustion, which of the following statements is FALSE? Choose the best answer. Gas engines have a lower compression ratio than diesel engines Gas engines are basically diesel engines with different injectors Gas engines use an ignition module and spark plug Natural gas requires more heat than diesel fuel to ignite
An air-breathing gas-turbine jet engine operates at SSSF with complete combustion of 1 kmol / s of liquid ethanol fuel (C₂H₅OH). The given air-fuel ratio is 33 kg-air/kg-fuel. The constant pressure combustion process (2 → 3) results in a small amount of heat transfer out to the surroundings. Assume the inlet air is composed of 21 % O₂ and 79 % N₂(1 O₂+3.76 N₂)FIND the theoretical air-fuel ratio, AFTHEORETICAL= _______ kg-air/kg-fuelFIND the concentration of CO₂ in the exhaust gas on...
The combustion of fuel in your car engine requires oxygen gas, which is supplied as air (21% oxygen molecules) into the engine. Consider a car that is using 100% ethanol, C2H5OH, as fuel. If your engine intakes 4.11 L of air per minute at 1.00 atm and 25ºC, what is the maximum volume of ethanol (0.789 g/mL) that can be burned per minute? Hint: You can ignore the "per minute" information because both the ethanol and air are being quantified...
Which of the following statements is/are correct? Choose the best answer. A. S = k lnW B. k = R/N C. delta SSURROUNDNINGS = -delta H SYSTEM/T D. delta GSYSTEM = -T delta SUNIVERSE E. All of the above (A-D). F. None of the above (A-D)
O THERMOCHEMISTRY Solving combustion thermoche... On a s day wilderness expedition you'll need to heat 3.0 kg of water to the boiling point each day. The air temperature will average 25 °c. You have available canisters of compressed propane (c,H,) fuel, which you'll burn to heat the water. Each canister has 10. g of propane in it. What is the minimum number of fuel canisters you must bring? The standard heat of formation of propane at 2s c is -...
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28. Choose best answer from drop-down menu: 2 points What fraction of radioactive atoms remains in a sample after five half-lives? Choose 29. Choose best answer from drop-down menu: 2 points Which type of nuclear process requires an extremely high temperature (millions of degrees)? Choose 30. Choose best answer from drop-down menu: 2 points The decay of tin-110 (Sn) by electron capture yields: Choose