User Manual

Fire Safety

Building Technologies 049_Archives_and_Libraries_A6

V10271399_a_en.doc

Fire Safety & Security Products 03.2009

sensitive items are stored, such as books, manuscripts or paintings in archives or

libraries, avoiding any type of damage to the irreplaceable goods.

The cooling effect of water droplets or “heat absorption capacity” is inversely pro-

portional to their diameter, with a diameter of 10 μm to 50 μm, the droplets gener-

ated by Sinorix

O Gas are ideally suited.

Fig. 18 Droplet cooling capacity

As the primary purpose of the water fog released by the Sinorix

O Gas system

is to cool the surfaces and the ambient air, smaller droplet diameters are more effi-

cient here.

Water injection is performed simultaneously with the nitrogen through the nozzles,

with the advantage that a single piping network is needed. The water supply is cal-

culated in such a way that the water reserve is fully discharged during the required

extinguishing time. This calculation, as well as the dimensioning of the piping and

nozzles containing the two-phase liquid-gas mixture, is performed by specially de-

veloped calculation software.

Nitrogen and water are extracted from the natural environment, therefore ecologi-

cally harmless. The flooding zone can be ventilated by means of ventilation sys-

tems or simply through windows after a successful flooding process, provided that

no harmful gases have developed during the combustion. Nitrogen and water can

be procured locally, ensuring a faster and economic refilling after a flooding proc-

ess. This reduces the time during which the sector is unprotected.

Sinorix

O Gas is conceived for room protection and appropriated to be engi-

neered as single or multi sector system. Nitrogen is stored under high pressure

(200 or 300 bar), so it is possible to build up complex piping systems over large

distances between the different extinguishing sectors.

During the flooding process the gas flows from the storage cylinders in the mani-

fold, a pressure-reducing orifice is built in after the manifold; this orifice causes a

nitrogen flow into the pipe system, at a maximum pressure of 60 bar. This guaran-

tees a nozzle pressure of at least 10 bar even with complex, long piping systems,

resulting in a good mixing of the flooded nitrogen and the ambient air. The required

nitrogen concentration can be built up quickly. Additionally there is a release of wa-

ter fog, Nitrogen is drained off in front of the gas orifice and is then led into the wa-

ter storage containers, which are unpressurized during the system stand-by. A

second orifice in the gas pipe between the nitrogen high pressure zone and the

water containers reduces the pressure in the following water-bearing pipe system