Experts in fire protection

Advantages

By using innovative low-pressure water mist technology, Minifog EconAqua water mist sprinkler systems offer particularly effective building protection. Compared to conventional sprinkler systems, EconAqua systems require up to 85 percent less extinguishing water, which reduces potential water damage to a minimum. The EconAqua pump room can be designed considerably more compact than conventional sprinkler pump rooms. This saves space, on-site costs and makes Minifog EconAqua water mist sprinkler systems ideal for retrofitting in existing buildings.

Advantages of Minifog EconAqua in comparison to classic sprinkler systems

  • Up to 85% less water used – water damage is reduced to a minimum.
  • Substantial space savings along the pipe routes, particularly in suspended ceilings, thanks to smaller pipe diameters.
  • Significantly lower space requirements for water supply, as EconAqua pump rooms can have smaller dimensions than classic sprinkler pump rooms.
  • EconAqua water mist sprinklers generally offer greater coverage than classic sprinklers.
  • Lower one-off and recurring costs for connection to the water and electricity supplies as a result of to reduced water consumption and pump power demand.
  • Ideal for retrofits in existing buildings.

Advantages of Minifog EconAqua in comparison to high-pressure water mist systems

  • Significantly lower costs for installing the equipment through the use of low-pressure components.
  • Minifog EconAqua systems allow use of galvanized pipes, plastic pipes, or concrete cast pipes.
  • Minifog EconAqua can be combined with both, classic sprinklers and hydrant systems.
  • Minifog EconAqua can be fed through a fire brigade supply – as additional backup, e.g. in the event of power failure.
  • Lower one-off and recurring costs for connection to the electricity supply as a result of reduced pump power demand.
  • Minifog EconAqua systems can also be used as dry pipe systems without trace heating in cold areas.

Design

1
Pump control cabinet
2
Storage tank
3
EconAqua master pump
4
EconAqua section valve set dry
5
Compressor unit
6
Fire detection and control panel
7
Wet pipe system for frost-protected rooms
8
Alarm station EconAqua
9
EconAqua section valve set wet
10
Dry pipe system for rooms subject to frost hazard
  1. Pump control cabinet
  2. Storage tank
  3. EconAqua master pump
  4. EconAqua section valve set dry
  5. Compressor unit
  6. Fire detection and control panel
  7. Wet pipe system for frost-protected rooms
  8. Alarm station EconAqua
  9. EconAqua section valve set wet
  10. Dry pipe system for rooms subject to frost hazard

Function

Extinguishing area

The nominal pipe diameters used in these areas mainly lie between DN20 and DN40 and are much smaller than those used in classic sprinkler pipework. In standby conditions the pipework in the sections is filled with pressurized water (wet system for frost-proof rooms) or with compressed air or nitrogen (dry system for rooms subject to frost hazard). In the event of a fire, the water mist sprinklers located in the immediate vicinity of the fire activate.

EconAqua pump room

In addition to the units which maintain the pressure in the pipework of the sections, the EconAqua pump room also includes the fire detection panel, the central alarm station, the master pump, a water source, and various other components that ensure safe operation of the fire-fighting system. The much smaller amount of water used in the Minifog EconAqua system means that the EconAqua pump room is up to 80% smaller than a classic sprinkler pump room.

The signals of the section valve sets and of the central alarm valve are transmitted to the fire detection panel. From here, alarms are set off to alert internal and external rescue teams. The main pump automatically starts if the pressure in the main distribution piping drops as a result of one of the section valve sets opening. The source of water may either be a water tank with automatic feed or – when using suitable safety devices – a direct connection to the public drinking water system.

Section valve sets

Every section is allocated an EconAqua valve set. In the event of a fire, i.e. after a sprinkler release, the pressure in the pipework of the affected section drops to a level such that the associated valve set is tripped and the fire-fighting process is started. At the same time a signal is sent to the fire detection control panel, in order to transmit an alarm and to better localize the fire.

Protected areas

The Minifog EconAqua water mist sprinkler systems can be used for a number of applications, covering several fire hazard classes. Classes which are defined in the VdS guidelines for sprinkler systems (VdS CEA 4001).

Archives

Protection zone

Archives house documents and information in the form of paper files or data carriers. Shelving bays or mobile storage racks make for transparent storage and as needed for quick access to specific information. The ceiling height is typically used to the limit.

Risks

  • Technical defects in devices such as the motors of electric mobile storage racks
  • Overheating of ceiling lighting
  • Highly flammable materials

Fire Protection

Sprinkler systems installed for the overall protection of the building typically provide the necessary safety in archives. The use of Preaction sprinklers prevents an unintentional triggering of the extinguishing system caused by accidental damage to a sprinkler. Oxeo inert gas extinguishing systems completely exclude water damage to archived materials. They are also an optimal solution if the distance between the upper edge of the shelves and the ceiling is too narrow for sprinklers. Oxeo extinguishing systems are triggered by a fire detection system using HELIOS AMX5000 aspirating smoke detectors.

Hotel rooms

Protection zone

Hotel rooms are retreat and relaxation rooms, mostly occupied at night by guests. During the day it is mainly staff that enter the rooms. There is often a very stringent demand for convenience and interior design in these rooms. For this reason, the rooms have already been fitted extensively with electrical devices, and this trend can be expected to continue in future.

Risks

  • Defective electrical devices, e.g. kettles, radio, or TV
  • Incompletely extinguished cigarette butts
  • Highly flammable materials

Fire Protection

Minifog EconAqua water mist extinguishing systems are a water and space-saving alternative to sprinkler systems in hotel rooms. In hotel rooms, they can be designed as extended coverage wall sprinklers, which means that a standard room can be safely protected against fire with a single sprinkler. When using undercover sprinklers, the extinguishing system fits particularly unobtrusively into the ceiling. 

Offices

Protection zone

Offices, conference rooms and dining rooms are generally used by staff and guests. In addition, staff members may also retire to break rooms or smoking rooms and to kitchens during work. Corridors run through the entire building, serving as a main traffic route.

Risks

  • Defective electrical devices such as projectors and computers
  • Overheating of the lighting
  • Short circuits at vending machines

Fire Protection

Minifog EconAqua water mist extinguishing systems offer space- and water-saving protection and can be connected to an existing sprinkler system. In areas with higher ceilings, sprinkler systems provide reliable fire protection. 

Parking areas

Protection zone

Extensive parking facilities are especially convenient for customers and employees. Due to space limitations, parking is often provided in highly frequented, multi-story car parks.

Risks

  • Technical defects in parked vehicles
  • Careless smoking
  • Arson
  • Rapid spreading of fire and development of smoke

Fire Protection

Minfog EconAqua water mist extinguishing systems offer a water and space-saving fire extinguishing method for underground car parks. For higher ceilings, sprinkler systems are a reliable alternative. 

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