Water Supply for Cooling Tertiary Containments for High Storage Tanks

Abstract

This paper presents a numerical investigation of water supply for cooling tertiary containment wall. These type of tanks are used as a part of petroleum high storage tank. Minimum quantity reasonably needed is perform by heat – balance equation. The calculation in is done for the most heat stressed wall part for a case when neighbouring tank is on fire.

Determining of Damages Caused by Fire on Photovoltaic Power Stations

“…For our calculation it was essential to carry out a certain simplification. Although dealing with a dynamic event, the flame surface was in accordance with the photographic recording of the fire and the dimensions of the building substituted by a rectangle at a height of 4 m and a width 20 m [3,6]. For this situation the calculation is on the safety side, because the selected flame height for the calculation is characteristic in regards to data recorded in the course of the fire.…”

“…For this situation the calculation is on the safety side, because the selected flame height for the calculation is characteristic in regards to data recorded in the course of the fire. The emissivity of the flame was stated at a value of 0,8 [3,6]. In literature it is shown that the emissivity of a flame for a substance rich in volatile components moves in the range of 0,7 -0,8 [6].…”

“…The higher the value is, the higher the thermal flow is and this causes higher radiation. Since temperatures were not measured in the course of the fire, the thermal course of the fire was measured using the programme Fire Dynamics Simulator [3]. The calculation was carried out for an average wind speed of 3,45 m.s -1 [2], which acted perpendicularly towards the north-west attic of the roof and was recorded by the meteo station of the operator of the photovoltaic power station.…”