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Calculation emergency vent

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Tchico76

Tchico76

Civil/Environmental
Joined
Sep 11, 2010
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Location
FR
Hi,
How to calculate (formulae) emergency vent located on a horizontal cylindrical storage tank in case of fire, please ? Are the formulae similar to vertical cylindrical storage tank ?
Thank for your help
 
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See NFPA 30. You will need to calculate the tank's wetted area. The equations in NFPA 30 are based on n-heptane, and you can modify your calculations based on the latent heat of vaporization of the tank contents.
 
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If memory serves me correctly horizontal vessels use 75% of the surface area, as heat input.
 
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