Currently, there is progressive use of fire protection systems that use the high-pressure water mist. The extinguishing effect of water mist on flammable liquids is not sufficiently elucidated. Therefore, experiments were designed to gain new knowledge about the mechanism of the high-pressure water mist extinguishing.As a source of the pool fire, gasoline, kerosene, diesel and ethanol were used. Flammable liquids were stored in a circular steel container with a diameter of 165mm and a depth of 12mm. The container was placed in an enclosed room of 2.7 x 2.7m x 3m. In the experiment, the time to extinguish flammable liquids was measured using nozzles of different spray characteristics of the water mist. The nozzles with orifice 400 µm, 800 µm and 1000 µm were used at a constant pressure of 70 bar.

The fire produce harms and damage environment. The fire assessment of photovoltaic power stations is based on testimony, photographic and some next records of during fire, data recorded by Weather Station of photovoltaic’ s station and from inspection of fireplace after extinguishing of fire.

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.

This article evaluates the knowledge obtained in firefighting tests using compressed air foam system (CAFS) within a confined space. Six experiments were conducted for verification during the cooling of rooms and the self-extinguishing effect. The simulation was for a fully developed fire within a room. The fuel was chosen to simulate ordinary combustible materials utilized in residential areas. Mantel thermocouples were placed in the rooms to record the temperature changes. Compressed air foam was first applied with a standard fire hose nozzle to the ceiling and then to the epicenter of fire. Fire extinguishing was initiated after reaching the desired temperature in the room. The temperature for the start of fire extinguishing matched the third phase of development of a fire. Fire extinguishing was terminated after no obvious signs of fire were shown in epicenter of fire. The outputs of the experiments were evaluated on the basis of the amount of time passed for the temperature to drop below the suggested limit. Individual experiments were also conducted with various different admixing foaming agents over different locations. In the experiments, it has been verified that the application of compressed air foam has a positive effect on room cooling. Use of a compressed air foaming agent does not allow for the development of steam that can scald firefighters and reduce visibility. Furthermore, the extinguishing agent used is more efficient utilizing less water flow out of the fire area.

The current management of the world’s fresh water resources is not optimal. Due to the uneven distribution of water, many parts of the world are entering a passive water management balance due to climate change and the growth of the human population. The Czech Republic is one of the countries with a passive balance. With ongoing climate change, it will be difficult in many regions to maintain sufficient raw water for technological and technical purposes without intensification in the water management process. Scientific progress and current technical possibilities offer ways to increase the way water is treated and the possibilities of re-using the realized water in the area of its use for various purposes, from the water source to the final cycle. One of these possibilities and the way of intensive use of water is dealt with in the following article.