Our Company
- Danfoss Fire Safety A/S is part of the Danfoss Group, a family owned global company, with more than 24,000 employees worldwide. Our company is located in Odense, Denmark and operates three main business areas. We are a global leader in the sale, development, production and service/commissioning of certified fixed fire fighting systems under the brand name SEM-SAFE®. Our fire fighting system are based on two key technologies: high-pressure water mist and low-pressure CO2. We are engineering a safer tomorrow for people and assets in buildings, industry and the marine sector.
- Within the Land area, Danfoss has a successful track record with different applications, ranging from complex high-pressure water mist fire fighting systems for museums and heritage sites to industrial applications, office buildings and universities. Within the Marine area, we have pushed the boundaries for development and design to offer a wide portfolio of high-pressure water mist fire fighting solutions for numerous application areas on almost any type of vessel. Our gas division is one of the leading low-pressure CO2 based fire fighting systems suppliers for the marine industry.
- Danfoss operates in-house research, development and manufacturing facilities of all critical components to ensure uncompromising performance and cost-effective systems. This puts us in a unique position to maintain our technological leadership in the future. Danfoss and all our employees have begun a journey to transform the company and our identity from a traditional workshop based culture to a modern industrial company. We aspire to be recognised as an innovative and customer focused company that delivers quality products on time and at a competitive price. Our mission is to develop, produce, sell and service cost-effective fire protection components and systems which offer the highest possible safety for human beings and reduces the damage to properties and other assets to an absolute minimum. As one of the pioneers of high-pressure water mist systems, Danfoss has been for many years an active board member of the International Water Mist Association (IWMA), established to advance knowledge of water mist technology in the fire protection industry.
The intelligent use of water
- For centuries, water has been used as a medium to fight fires by cooling the fire. The breakthrough that water mist represents is to use the same method as traditional sprinklers but to add the effect of converting the water into steam. This means that the cooling effect is up to seven times higher. If we look at the fire triangle, a fire relies on the presence of three elements in order to survive; oxygen, heat and combustible material. The removal of any one of these elements will extinguish a fire. A high pressure water mist system goes further: it attacks two elements of the fire triangle: oxygen and heat. This means that water mist combines the suppression effect of gas and traditional sprinkler systems. As well as removing the oxygen like gas system, it simultaneously cools the fire like a traditional sprinkler.
The power behind SEM-SAFE®
- The SEM-SAFE® water mist system is a unique fire fighting system. By forcing water at a high pressure through nozzles, an extremely fine mist is created. Water is supplied via a pump unit. The SEM-SAFE® pump unit can supply all water mist applications. This is beneficial because you only need one unit for all applications, and it is easy to add more sections and applications, if needed. In addition, servicing of only one unit is easier and less costly.
1. SEM-SAFE® water mist system with closed nozzles
- On stand-by, the system maintains a pipe pressure of approx. 12 bar. When the temperature exceeds e.g. 57 °C, the heat-sensitive glass bulbs mounted in the nozzle heads melt. At this point, the high-pressure pump is automatically activated and water is forced through nozzles at high-pressure (60 or 100 bar depending on nozzle type) to create a fine mist. Only nozzles with melted bulbs are activated. This means that only the heat-affected area will be actively sprayed.
2. SEM-SAFE® water mist system with open nozzles
- On stand-by, the system has dry piping. This system will activate manually or when sensors have detected heat, smoke or a flame, depending on type and application. The nozzles are grouped in sections and all the nozzles in the activated section will be released.
3. SEM-SAFE® water mist system in operation
- During operation, the high-pressure pump draws water from the tank on unit (a non-pressurised stainless steel tank) and forces it through a non-return valve to a high-pressure manifold. From here, it is distributed to the relevant section(s) via the section valve. A pressure relief valve controls the pump pressure and is designed to return the full pump capacity to the tank on unit.
The benefits of SEM-SAFE® high-pressure water mist system - Quick fire fighting
- As water mist both cools the fire and removes the oxygen, it results in quicker fire fighting
- Due to the cooling effect of water mist, re-ignition is avoided
- The SEM-SAFE® water mist system is ready for re-use immediately after a fireLess damage
- Water damage is kept at a minimum due to the low water consumption of the high pressure water mist system
- The SEM-SAFE® system can be deployed instantly, resulting in less damage
- Using only pure water, the SEM-SAFE® water mist system gives you the best possible protection of equipment and human lives Reduced down time
- The reduced amount of damage often means less down time, resulting in much lower costs
- There is no need to fill up cylinders, thus saving expensive refilling time and overall costs
- No need for extra installations
- The pump unit takes up little space and needs no special room or safe storage
- Easy and fast installation is possible due to small pipe sizes and low system weight
Actual case
Delicate Equipment and Factories
Culture Monument
Medical Long term Care
Museums hotels shopping malls and laboratories
Ship
Mechanical space
