Bad Oldesloe / Cologne, December 5, 2022 – Minimax will be presenting the brand new extended version of the Minifog EconAqua low-pressure water mist extinguishing system for the first time at the VdS
The new development of the EconAqua water mist sprinkler U16 now makes EconAqua the low-pressure water mist system with the widest range of applications on the market. Moreover, it is the only one which is approved by VdS for use in car parks and underground parking areas with a ceiling height of up to 3.6 meters.
Confirmed efficacy approved by VdS
With its low-pressure technology, EconAqua achieves an effectiveness comparable to high-pressure water mist sprinkler systems, meaning that the new U16 sprinkler is just as effective as conventional sprinklers. This was proven in a series of standardized fire tests in accordance with VdS 3883-4 and prEN 14972-5, where the arrangement of vehicles typical of a parking garage was simulated in the Minimax fire safety research center. In the fire tests supervised by VdS Schadenverhütung, it was possible to show that the EconAqua low-pressure water mist system provides fire protection with a ceiling height of 3.6m similar to classic water sprinkler systems, while using far less extinguishing water.
Consequently, Minifog EconAqua has far greater efficiency regarding water used to extinguish fires than conventional sprinklers. This can even mean savings of up 85 percent in water in certain cases. Due to the extremely low amount of water required, possible extinguishing water damages in the event of a fire are kept to a minimum.
Minifog EconAqua water mist extinguishing equipment can also be used to safeguard against fires in car parks and other areas at risk of frost without the need to install costly pipe heat tracing, because dry pipe systems can be set up like with conventional sprinkler equipment. In a standby state, these are filled with compressed air.
Minifog EconAqua systems also have an advantage over conventional sprinkler systems because they take up considerable less space. This is due to the compact water supply and the smaller pipe diameters in the pipe network – especially within suspended ceilings. This not only saves on construction costs. In many existing buildings, it makes it possible, for the very first time, to retrofit an extinguishing system at all.
Consequently, Minifog EconAqua provides particularly efficient fire safety in buildings, not only in offices and public administration buildings but also hospitals, museums, hotels or even car parks and underground parking areas. This is especially the case where damage caused by extinguishing water needs to be avoided at all costs, in areas where there is an acute shortage of space, or in places where a conventional sprinkler system cannot be connected directly to the drinking water supply.
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Minimax switches thyssenkrupp Steel Europe Fire Protection Systems to Fluorine-free Foam Concentrate
In May, Minimax and its competence team ‘Steel’ carried out a series of tests with fluorine-free foam concentrate at MPA Dresden GmbH, an independent fire protection competence center. The reason for the efficacy tests, which were supervised by VdS Schadenverhütung GmbH, was conducted at the request of our customer thyssenkrupp Steel Europe AG to convert its extinguishing systems to a fluorine-free extinguishing foam. All the tests were successful, and VdS approved the use of the new, 1% fluorine-free foam extinguishing agent for the protection areas and system types concerned.
Time is of the essence: On April 8, 2020, the EU Regulation 2020/784 was passed, further restricting the use of PFOA (perfluorooctanoic acid). Admittedly, firefighting foams are still considered to have a special status because every fire that can be prevented means that other, incalculable environmental damages are averted. The transitional period until July 4, 2025 still applies to fire extinguishing foams that are already filled in existing systems or mobile extinguishing equipment. From this date onwards, mixtures or products must not contain more than 25ppb (=μg/kg) of PFOA or a total of more than 1000ppb11 (=1ppm=1mg/kg) of all precursors. PFOA foams will no longer be allowed for educational purposes, and for testing only if there is a possibility of capturing all releases. As early as January 1, 2023, use will only be permitted at sites where all releases can be captured.
What needs to be done?
As a result, many operators are concerned about the future of their fire protection facilities and would like to see a switch to fluorine-free foams. However, a number of requirements has to be considered in terms of the switchover: The VdS recognition for the use of foam extinguishing agents in water extinguishing systems according to VdS CEA 4001 and VdS 2109 always refers to the recognized foam agent and defined applications. If the intended area of application (type of system / fire load) is not already covered by the proof of effectiveness from the acceptance procedure, additional proof of efficacy needs to be provided. In this case, the foam concentrate was already certified for risks associated with plastics. The testing has since been carried out for certain flammable liquids.
In May, Minimax conducted extinguishing tests for thyssenkrupp Steel Europe at MPA Dresden GmbH. The parties involved were VdS Schadenverhütung as the testing and certification institution, the risk manager, the foam agent manufacturer Dr. Sthamer, the operator, and Minimax with its competence team ‘Steel’ and the extinguishing system management ‘Water’.
The configuration of the tests was prepared at length and tailored to the specific application. For the tests, Minimax installed both a deluge system and a water mist suppression system matching the real conditions of the existing system in terms of sprinklers, operating pressures and distances to the fire object. The extinguishing of three selected flammable liquids was tested, each using water and foam extinguishing agents.
The effort was worthwhile: VdS approved the tested foam agent for use in the given types of systems in combination with the three examined flammable (hydraulic) liquids and for use in accordance with the protection concept as per VdS CEA 4001 (sprinkler systems), VdS 2109 (deluge systems) and VdS 2108 (low expansion foam extinguishing systems).
For Marcel Esper, Head of the Minimax competence team ‘Steel’, and Thorsten Gieseke, Minimax suppression system manager, the results of the extensive extinguishing tests are even more far-reaching: "Beyond the approval, we gained a lot of additional knowledge that we will take into account for the further procedure with fluorine-free foam agents." The competence team ‘Steel’ is the specialist for stationary fire protection in the steel industry, providing single-source support in the Ruhr region for the plants of thyssenkrupp Steel Europe AG, among others.
For thyssenkrupp Steel Europe AG, the switch to fluorine-free foam concentrate is a particular concern, both to ensure fire protection and, at the same time, to contribute even more to environmental and water protection. The fact that this can be achieved with comparatively little effort means enormous potential savings for the customer. Converting the plant would incur costs and, on the other hand, production would be impaired during conversion periods.
Our company has changed its legal form in order to simplify the structure of the Minimax Viking group in Germany. With effect from August 11, 2021, Minimax GmbH & Co. KG has been renamed Minimax GmbH.
All contracts, general terms and conditions, terms of sale and delivery, etc. are still valid. Our contact address, too, remains valid.
You will find the current company data in the imprint of our website.
We would like to take this opportunity to thank our customers and partners their trust and confidence in us and look forward to a continued successful working relationship. If you have any questions on the above, please do not hesitate to contact your representative.
Digital format of the leading trade fair for recycling, materials and waste management
As part of the RWM DIGITAL SERIES, a digital format of the leading trade fair for recycling, materials and waste management, on 20 May Jan Weimann (Minimax) introduces Minimax's high-performance firefighting turbine MXOne. He will show video footage of extinguishing tests in our Fire Protection Research Center. During the lecture and afterwards you can ask questions via chat.
Certain remote, hard to reach or large areas in the industry, energy or infrastructure sector cannot be covered in an efficient or economical way by conventional fire protection systems. MXOne uniquely meets the demands posed by special fire risks in numerous industry and risk areas, both inside and outside buildings – incl.: Recycling operations, Wood-processing industry, Chemical plants/refineries, Airports/hangars, Substations/transformers.
20 May 2021 | 11 a.m. – 1 p.m. (BST) | 12 p.m. – 2 p.m. (MET)
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Innovative fire protection using water mist from a safe distance
Today, Minimax is launching the extinguishing turbine MXOne. This unique system has a 360° operating range and enables the highly precise application of water mist from a significant and safe distance. In the event of a fire, the water mist absorbs a huge amount of energy, cools particularly effectively and reaches hidden fire sources better than classic monitors. It binds flue gases, pollutants and odors, and is able to exert its efficiency quickly over large areas. The effectiveness of the turbine has been examined and confirmed in full-scale fire trials conducted by independent bodies, including DMT.
MXOne can be operated with potable water, seawater and with/without foaming agents. Spray patterns can range from a fine water mist to a full jet. The firefighting system reaches a flow rate of up to 4,000 liters per minute. MXOne can be aimed at a hot spot either fully automatically or manually via remote control. Thanks to a smart operating system, a single turbine can supply water alternately to two or more neighboring areas. Consequently, several fires can be fought in parallel, or nearby facilities threatened by fire can be specifically cooled in a targeted manner. The turbine can be easily integrated into existing plants and is suitable for use in areas with temperatures ranging from -15°C to +55°C.
A decisive innovation: throw distance
MXOne has the unique ability to fight a fire with water mist from a significant distance. The turbine is able to offset the susceptibility of small droplets to external factors such as crosswinds or headwinds using a smart control system and activating a supporting air stream. Furthermore, the system can be flexibly adapted to meet almost any challenge posed by different fire scenarios.
Efficient firefighting with water mist
When extinguishing a fire with water mist, the water is atomized under high pressure, meaning the smallest of water droplets and a larger reaction surface are formed that absorb heat. When water evaporates, its volume is increased many times over, thus displacing the oxygen at the source of the fire. The smothering effect fights the fire directly. The cooling aspect of the water mist protects people and property from the effects of heat. The volume of water consumed during the firefighting effort as well as the consequential damage caused by the water are extremely low.
Maximal flexibility in positioning and application
The control and direction of the extinguishing turbine can be done fully automatically, as follows: Information from at least two fire detectors (e.g. UniVario industrial fire detectors or infrared cameras) is assessed in the fire alarm and control panel and the location of the source of the fire is accurately determined before MXOne is activated. Alternatively, manual control of the turbine is always an option. Both stationary and mobile control variants can be implemented according to the operator's requirements.
Self-monitoring of detector optics in spark detection
The UniVario YMX5000 series offers new possibilities in spark detection in the wood-processing industry: for the first time there is a cyclic optics monitoring of all sensor units, as well for spark detectors. A new feature is that this detector series is suitable for extreme temperature ranges, and thanks to its modularity offers maximum flexibility in use.
The detection system of the UniVario YMX5000 series consists of a control unit with three connectors for remote sensor units. The electronics of the evaluation unit is self-monitoring, displays for example alarms or faults, and thus offers extra functional safety. The sensor units are connected to a control unit and allow dependable detection wherever there is an increased fire risk from sparks. The spark detection system is audited and approved by VdS.
New standards for additional safety: Self-monitoring in spark detection
Self-monitoring of optics has since become standard in flame detection. The UniVario YMX5000 system has succeeded for the first time in the world in transferring this standard to spark detection. At cyclic intervals the optics are monitored with regard to contamination or damage - a functionality that again significantly increases the operation safety of the system in the sometimes harsh areas of deployment in a wood-processing plant.
Extreme temperatures: From ice-cold to hot
The UniVario YMX5000 system is suitable for applications in extreme temperature ranges. The corresponding FUX sensor unit can even be used without fiber optic adapter at temperatures from -40°C to 105°C. The sensor units will be also available in an “Ex” version for use in explosion-hazard zones in Ex zones 1, 2, 20, 21 and 22.
Minimal downtimes: Easy, secure and long-lived system
Installing the sensor units is simple and safe thanks to the single-hole mounting with bayonet locking. The flush wall connection within transport- or suction channels minimizes the wear of the optics and guarantees a long lifetime. Possible air flushing does not affect the 120 degree viewing angle of the sensor system. Maintenance, for example for defective optics, is particularly easy thanks to a quick-change replaceable optics, so downtimes can be reduced to a minimum.
Minimax will be displaying the new UniVario YMX5000 detection system as a world first on the occasion of LIGNA 2017. In addition to this visitors to the Minimax trade stand at LIGNA can find out more about Minifog PressProtect, a solution for the protection of industrial presses, DryerProtect, the combined fire detection-, water mist- and spark extinguishing technology for driers, thermography systems and the Inveron hazard management system.
LIGNA 2017, Stand C24 in Hall 26
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