Study of the Behavior of Wall Sandwich Panels Irrigated with a Drencher Curtain at the Unilateral Thermal Exposure


In the last ten years, drencher curtains are widely used at the large production facilities to increase fire resistance of the building structures. The length of the drencher curtains used as a compensating measure instead of fire walls can reaches 250 m. 

A three-dimensional modeling of the operation of a drencher curtain together with a type 1 fire barrier in the form of a sandwich panel was performed. FireCat software package was used for modeling.  One of its components is the PyroSim software package designed for fire modeling. A field model was chosen as a mathematical model of fire development.

A number of simulations was carried out at a given sprinkler flow rate of 1 l/s, but at different distances between the sprinklers (different number of sprinklers operating in one stream was used) — from 0.5 to 5 m. 

As a result, it is established that when sprinklers are placed at a distance of no more than 2.5 meters from each other, the model meets the fire resistance requirements for type 1 fire walls.

The experiments were carried out in the irrigation intensity range of 0.1–0.5 l/s·m. It is established that in order to achieve fire resistance limit REI 150, the irrigation intensity must be at least 0.37 l/s·m.

The studies carried out made it possible to obtain qualitative data on the efficiency of drencher curtains plaсed in one line as a measure to increase the time limits of fire resistance of fire barriers from 45 to 150 minutes.

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DOI: 10.24000/0409-2961-2022-2-27-31
Year: 2022
Issue num: February
Keywords : fire resistance building structure sandwich panel drencher curtain fire curt 3D modeling heating intensity
  • Sharafutdinov A.A.
    Cand. Sci. (Eng.), Assoc. Prof., Ufa state petroleum technological university, Ufa, Russia
  • Krasnov A.V.
    Cand. Sci. (Eng.), Assoc. Prof.,, Togliatti State University, Togliatti, Russian Federation
  • Gazizov A.M.
    Dr. Sci. (Eng.), Prof. Ufa State Petroleum Technical University, Ufa, Russia