A mixture of propane in air containing 403 mole c3h8 is the

Reference no: EM13639973

There is a percentage of fuel in a fuel-air mixture called the lower flammable limit (LFL), below which the mixture cannot be ignited. There is also an upper flammable limit (UFL), a percentage of fuel above which ignition will not take place. The LFL and UFL are collectively known as the flammability limits of the fuel. The LFL and UFL of propane in air at 1 atm are, respectively, 2.05 mole % C3H8 and 11.4 mole% C3H8. If the mole percent of propane in a propane-air mixture is between 2.05% and 11.4%, the gas mixture will burn explosively if exposed to a flame or spark; if the percentage is outside these limits, the mixture is safe-a match may burn in it but the flame will not spread. If the percentage of propane is below the LFL, the mixture is said to be too lean to ignite; if it is above the 1.JFL the mixture is too rich to ignite.

(a) Which would be safer to release into the atmosphere-a fuel-air mixture that is too lean or too rich to ignite? Explain.

(b) A mixture of propane in air containing 4.03 mole% C3H8 is the feed to a combustion furnace. If there is a problem in the furnace, the mixture is diluted with a stream of pure air to make sure that it cannot accidentally ignite. If propane enters the furnace at a rate of 150mol C3H8/s in the original fuel-air mixture, what is the minimum molar flow rate of the diluting air?

Reference no: EM13639973

Questions Cloud

What are the vertical forces exerted on the ends of the bow : if the archers left hand is pushing against the bow handle with a force p 50 lb what is the tension in the string as a

Calculate the composition of the vapor phase at 25 degc if : 1-propanol p1 20.9 torr at 25 degc and 2-propanol p2 45.2 torr at 25 degc form ideal solutions in all proportions.

Now consider a second inclined plane with the same tilt : a block slides up a frictionless incined plane set at an angle of 25 degrees.a if the block reaches a maximum height on

The question two distinct integers are chosen at random and : the question two distinct integers are chosen at random and without replacement from the first six positive integers.

A mixture of propane in air containing 403 mole c3h8 is the : there is a percentage of fuel in a fuel-air mixture called the lower flammable limit lfl below which the mixture cannot

A university has 1000 computers available for students to : a university has 1000 computers available for students to use. each computer has an 850-gigabyte hard drive. the

Two blocks of mass m1 15 kg and m2 9 kg are pushed : two blocks of mass m1 15 kg. and m2 9 kg. are pushed against each other m1 on top and sliding down an incline of 35

The valve is closed when no liquid is left in the tank and : a 0.12m3 rigid tank contains saturated refrigerant r134a at 800kpa. initially 25 percent of the volume is occupied by

She sampled 20 teams from 2012 nfl season and found the : a fan cost index is calculated for each of the professional sports to give an idea of what it costs a family to go to a

User Account

All Pages