High Pressure Water Mist – The Modern Approach In Fire Fighting

2005 ◽  
Author(s):  
Stefan Gordin
Keyword(s):  
High Pressure ◽  
Fire Protection ◽  
Water Mist ◽  
Fire Fighting ◽  
Modern Approach ◽  
Protection Efficiency ◽  
Sprinkler Systems ◽  
Pressure Water ◽  
In Fire

In only ten years, high pressure water mist fire protection has evolved from theory to becoming widely accepted as an alternative to traditional sprinkler systems, foam, CO2, halon, and other gases. It has proven itself as offering equal fire protection efficiency to these other systems and, in many conditions, exceeding them.

A High-Pressure Water Mist System: Clean Fire Protection for Gas Turbines

2005 ◽  
Author(s):  
Heikki Voutilainen ◽  
Herbert Rohrbacher
Keyword(s):  
High Pressure ◽  
Fire Protection ◽  
Gas Turbines ◽  
Thermal Stresses ◽  
Health And Safety ◽  
Droplet Size Distribution ◽  
Water Mist ◽  
Third Party ◽  
Protection Systems ◽  
Pressure Water

Modern high-pressure water mist systems are an advanced choice for rotating machinery fire protection. High-pressure water mist systems can provide: • Proven extinguishing efficiency, • Proven capability to protect equipment from thermal stresses, • Tolerance to poor enclosure integrity, • A safe and reliable alternative to gaseous systems, and • An environmentally friendly alternative to dry chemicals, halons and halon alternatives. Generally, the systems have total flooding design, which is the most appropriate for protecting rotating equipment in their purpose-built enclosures. Fine water mist with a specific application rate, droplet size distribution and high discharge momentum is used to fill the enclosure quickly and completely. For all fire protection systems, third party testing and appraisal is important. FM and VdS have approved gas turbine fire protection systems for enclosures up to 500m3, while systems for enclosures up to 3300 m3 are (2004) within approval process. This paper explains the water mist system basic terminology and fundamentals. The paper then discusses system design requirements and features. In the end, health and safety, as well as environmental aspects are reviewed.

High Pressure Water Mist Fire Protection Systems

2007 ◽  
Author(s):  
Jaakko S. Ka¨a¨ria¨inen
Keyword(s):  
High Pressure ◽  
Fire Protection ◽  
Gas Turbines ◽  
Open Water ◽  
Water Mist ◽  
Reliable System ◽  
Protection Systems ◽  
Protection Technology ◽  
Industrial Gas Turbines ◽  
Pressure Water

Traditionally the industrial gas turbines have been protected with gaseous systems like CO2 or Halon. These systems depend much on the enclosure integrity because the concentration of the extinguishing media has to be kept on a certain level for a certain time. The enclosure integrity has to be tested periodically, and this often causes high maintenance costs. Most gaseous systems are dangerous to people. The enclosure has to be evacuated prior to discharge. This procedure takes typically 2-20 minutes. High pressure water mist fire protection technology provides a reliable system, which is not depending on enclosure integrity. Actually the testing of these systems has been done with the enclosure door open. Water mist systems are safe to personnel. They can be released immediately after the fire has been detected.

scholarly journals Extinguishing of Pool Fires using the Water Mist

2020 ◽  
Vol 22 (4) ◽  
pp. 191-200
Author(s):  
Daniel Ondrusik ◽  
Dalibor Balner ◽  
Adam Thomitzek
Keyword(s):  
High Pressure ◽  
Fire Protection ◽  
Constant Pressure ◽  
Water Mist ◽  
Spray Characteristics ◽  
Steel Container ◽  
Flammable Liquids ◽  
Protection Systems ◽  
New Knowledge ◽  
Pressure Water

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.

Experimental and numerical study of high-pressure water-mist nozzle sprays

2016 ◽  
Vol 81 ◽  
pp. 109-117 ◽  
Author(s):  
H.M. Iqbal Mahmud ◽  
Khalid A.M. Moinuddin ◽  
Graham R. Thorpe
Keyword(s):  
High Pressure ◽  
Numerical Study ◽  
Water Mist ◽  
Pressure Water
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