Prediction of the Behavior of a CNG Tank Exposed to Flames Politecnico di Bari

Format:

Conference/Event

Author/Creator:

D'Introno, D'Introno, author.

Contributor:

Amorese, C.

Camporeale, S. M.

De Matthaeis, S.

Fortunato, B.

Torresi, M.

Conference Name:

7th International Conference on Engines for Automobile (2005-09-11 : Naples, Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Naples, ITALY Consiglio Nazionale delle Ricerche 2005

Summary:

The increasing request of vehicles fuelled by Compressed NaturalGas (CNG) requires that the safety issues related to this kind offuel should be analyzed more and more thoroughly. So far, theminimum requirement for a CNG tank is to set up a Pressure ReliefDevice (PRD) triggered by temperature.This work aims to develop a procedure able to perform thoroughlytank behavior analyses, in presence of fire, in order to reduce thenumber of expensive experimental tests and to improve the designcriteria of tank safety devices. The procedure consists in thesolution of the unsteady solid-fluid conjugate heat transferproblem, by means of numerical simulations, in order to evaluatethe transient behavior of both the temperature field inside thesolid walls of the tank and the thermo-fluid-dynamic field of thecompressed gas inside it, when it is exposed to a heating source.Moreover, the melting process of the fusible plug, inside the PRD,is simulated. In order to validate this procedure, experimentaltests have been carried out on a suitable test rig.Several heating conditions, even unlikely, but able tojeopardize safety, have been considered. The conditioncharacterized by a flame located on the opposite side of the PRDhas been recognized to be the most critical with respect toexplosion risk. In this case, the relationship between time andtank pressure has been numerically evaluated. The fusible plug,inside the PRD, has been checked to be completely melted of thefusible plug before the pressure reaches the safety limit

Notes:

Vendor supplied data

Publisher Number:

2005-24-030

Access Restriction:

Restricted for use by site license