When the polluted air goes through the
mechanical pre-filter the particles *50 μ are
eliminated (powder, insects, etc).
Then the smallest particles (50 ÷ 0.01 μm) are
exposed to an intensive ionizing field and are polarized (Phase 1).
The charged particles passing through the second filter section, are
pushed back by the anode and attracted to the collection surfaces
by a strong, induced magnetic field (Phase 2).
The air which leaves the unit is free from polluting particles.
re
Operating principle
of the electrostatic filter
The expression Indoor Air Quality (IAQ) covers all the procedures and methodologies used to improve the
quality of the air we breathe in the places where we live and work, from all points of view, from temperature
to cleanliness, to relative humidity, etc. (EN 15251 and EN 13779). Thanks to its new patented electronic filter,
the Crystall electrostatic filter totally eliminates the pollutants present in the air, including tobacco smoke,
dust (PM10, PM2.5), fibres, microbiological substances such as bacteria, fungi, etc., which are harmful to human
health (source: OMS 2009). Purifying the air means not only greater well-being, but also energy saving, as the
fresh air changes that are required to restore ideal climatic conditions and that entail greater consumption, are
significantly reduced (it is sufficient to enter the quantity of air required to restore the optimum level of CO2- source:
EN 1379:2008). Moreover, according to the UNI 10339rev, air recirculated by the Crystall appliance can be
considered as fresh air, to be added to the minimum requirements (0,5 ls/m2). Purifying the air with the Sabiana
Crystall appliance also entails no reduction of living room space, as the dimensions of the fan convector
are practically unchanged (just 3 cm higher). The positioning of the electronic filter allows simple and effective
maintenance and, as it is easy to wash, its working life is practically unlimited. The modularity of the filter
components and their ease of mounting make the system extremely competitive in terms of cost compared
with other types of filters present on the market. In spring and autumn, if air conditioning/heating is not required,
the appliance acts simply as an air purifier.
Indoor air quality (IAQ)
THE AMBIENT CONDITION IS ACCEPTABLE WHEN:
• Microclimatic parameters are normal
• 80% of people are satisfied by the quality of air
• Specific internal contaminants are not in harmful concentrations
“Guidelines for the protection and promotion of health in confined areas O.G.
No. 276 dated 27 Nov 01 ordinary supplement no. 252”
The method for obtaining the air quality required in confined areas and thus succeeding in ensuring that the
contaminants present are in concentrations less than those considered dangerous to health are:
Prescriptive approach: ventilation of the internal area using only properly filtered fresh air, in the quantity
and quality needed to dilute the internal contaminants in order to reach the required
maximum acceptable concentration values (see WHO limits).
Performance approach:
ventilation with fresh air and recirculated air from the same area, both properly filtered,
in the quantity and quality needed to dilute the internal contaminants in order to reach
the required maximum acceptable concentration values (see WHO limits).
Standards and legislation
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