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Calculation emergency vent

thread1203-281086

Calculation emergency vent

Calculation emergency vent

(OP)
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

RE: Calculation emergency vent

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.

RE: Calculation emergency vent

If memory serves me correctly horizontal vessels use 75% of the surface area, as heat input.

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