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Topic: Help with this exercise  (Read 1490 times)

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Offline kidzao

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Help with this exercise
« on: September 26, 2014, 08:34:52 AM »
In the event of an explosive combustion of vapor at atmospheric pressure, the vapor cloud
can be modeled as adiabatic because the combustion occurs so rapidly. The vapor cloud
expands rapidly due to the increase in moles due to combustion, but also due to the adiabatic
temperature rise. Estimate the volume increase of a 22°C, 1 m3 mixture of propane and a
stoichiometric quantity of air that burns explosively to completion. Estimate the temperature rise.

Offline sjb

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Re: Help with this exercise
« Reply #1 on: September 26, 2014, 09:39:00 AM »
In the event of an explosive combustion of vapor at atmospheric pressure, the vapor cloud
can be modeled as adiabatic because the combustion occurs so rapidly. The vapor cloud
expands rapidly due to the increase in moles due to combustion, but also due to the adiabatic
temperature rise. Estimate the volume increase of a 22°C, 1 m3 mixture of propane and a
stoichiometric quantity of air that burns explosively to completion. Estimate the temperature rise.

Do you have any thoughts? How about the first part- can you for instance write an equation for this process?

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