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FireSeeker
1. General.
The IFEX 3000 Impulse fire extinguishing technology utilising high performance Intruder impulse cannons mounted on a remote controlled vehicle to enable the fire fighters to create a safe working environment before entering the tunnel.
The system consists of a remote controlled electro-hydraulic robot. The vehicle is designed for external water supply through any standard fire hose. It carries sufficient air supply, PLC monitoring system and 2 off 12, 15 or 25 litre IFEX 3000 high performance Impulse cannons.
The cannons are provided with a hydraulically operated tilt mechanism, left right adjustment is possible through the vehicle swivel mechanism.
A supply vehicle (trailer) with water and compressed air can also be adapted to the vehicle.
2. Water as a fire-extinguishing agent.
Water as a fire-extinguishing agent has been used since the beginning of time and is still the most versatile and effective fire-extinguishing agent. Water has a large heat capacity or heat volume. At a temperature of 100 degrees C., one litre of water has the capacity to heat absorb 2.246 Mjoule. It is a unique ability when water demands large amounts of energy for the evaporation process.
When one litre of water evaporates to steam at 100 degrees C., 539,1 Kcal energy is released or absorbed. 1 Kcal is equivalent to 426,9 kgm. 1 kW is equivalent to 101,98 kgm/sec. 1 Kcal/sec. is equivalent to 4.168 kW. One litre of water evaporated in one second requires 539,1 Kcal. One litre of water is capable of heat absorbing 2,246MW. At 300 degrees C., one litre of water evaporated in one second requires 719,7 Kcal. One litre of water at 300 degrees C. can heat absorb 3,0 MW. When water evaporates the expansion factor is 1700 at 100 degrees C. and 2000 at 300 degrees C.
By utilising IFEX 3000 impulse fire extinguishing technology and water fog, where water with small water droplets is propelled at high velocity, two important factors of efficiency are achieved. The overall cooling surface area and the momentum. High velocity means that water can be transported with high energy at a distance and large cooling surface area accommodates rapid evaporation and less water usage.
Typically, one litre of water in the IFEX 3000 system creates a cooling surface area of approximately 200 m2, while a conventional spray nozzle system only will create a cooling surface area of 6 m2. The IFEX 3000 technologies have shown efficiency factor of 0,45 which means that one litre of water can heat absorb 1,01MW/100 degrees C. and 1.35MW at 300 degrees C.
3. Calculation Parameters.
When water fog is used for fire extinguishing, the scientific figures in respect of fire control, inerting and fire extinguishing are basics for the sequential and overall water flow within the section or area on fire.
Minimum fire controlling density, 0,05 litre/m3. Design density minimum, 0,168 litre/m3 Inert threshold, 0,168 litre/m3. Flux density minimum 0,60 litre/m2/min. Calculated density 1,2 litre/m2/min.
The IFEX 3000 Fire Tracer Impulse Fire Extinguishing system is designed to maintain full inert atmosphere, 0,168 ltr. /m3 under the duration of the system.
Actual water discharge per minute is designed with 4 x 25 litre Impulse cannons, discharging every 10 seconds. Cascade frequency 2 x 5 seconds. 100 x 6 = 600 litres/min.
4. Technical Specifications IFEX 3000, 12, 15 and 25 litre Intruder Cannons.
The IFEX 3000 Intruder Impulse cannons are developed for fast response fire protection and instant cooling of the environment. Small amounts of water with small water droplets discharged at high velocity within a short period of time. The technology as such accommodates extremely high performance, fire controlling capacity and rapid cooling of the temperature. The large cooling surface area and high kinetic energy reduces the overall water usage down to a minimum.
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* Water capacity per impulse shot
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12,15 or 25 litres
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* Velocity of impulse shot
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120 m/sec
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* Valve opening and Closing Period of Time - milliseconds
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20
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* Maximum throw distance
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75 m
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* Width of impulse shot at 10 metres from outlet
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6 m
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* Effective Fire Extinguishing Distance
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10 to 45 m
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* Effective Fire Controlling Distance
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5 to 55 m
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* Average Droplet Sizes - micron
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2 to 250
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* Mean Droplet Size - micron
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100
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* Operating Pressure
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25 bar
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* Recharge time - Compressed Air
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2 sec
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* Refilling Time - Water
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3 sec
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* Operating, control and release
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PLC
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5. Specifications IFEX 3000 Fire Seeker.
* Remote controlled electro-hydraulic vehicle mounted with IFEX 3000 impulse cannons
* Tracked vehicle, with long track design for great access and stability
* Water connection for external water feed
* 2 off pressure air vessels for air buffer to impulse cannons.
* Built in PLC - monitoring and operation system.
6. Technical Specifications
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* Length vehicle only
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xxx mm
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* Width
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800 mm
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* Height without Impulse Cannons
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1200 mm
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* Overall weight
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2500 kg
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The Fire Seeker is a prototype only and further research needs to be done. This document was prepared by IFEX GmbH in . In Australasia IFEX is represented by Fire Fighting Technologies International Pty Ltd, Level 14, 2 Bulletin Place, Sydney NSW 2000. www.firefightingtechnologies.com.au
