Filter Technology

Soluduğumuz Hava

THE AIR WE BREATHE

Air is a mixture of gases composed of approximately 21% oxygen, 78% nitrogen, 1% argon, and traces of other gases. The air we breathe also includes particulate material and gases generated by nature, by man, and by industrial processes as seen in the Figure.

Ölçüm Methodunun Etkisi

EFFECT OF MEASURING METHOD

Work done under the sponsorship of ASHRAE and private organizations such as filter manufacturers showed that the percentage distribution of particle sizes in the atmosphere depended significantly on the method of measurement.

Elek-Etkis-2

MECHANISM OF AIR FILTER

The total efficiency of a filter is the sum of the four filtration effects. Under certain conditions, total efficiency will have a certain minimum value.

test1

TEST METHODS

There are basically two sources for filter testing; USA based standards (ASHRAE, IEST; MIL) or European based standards (CEN; EN779 and EN1822). For HEPA and ULPA filters similarly CEN standards are used in Europe, IEST and MIL recommended practices are used in the United States.

HEPA_Filtreler

HEPA FILTERS

The use of HEPA filters used in air conditioning systems in clean rooms is increasing day by day in pharma, food and hospitals.

Gaz Phase Filtration

CHEMICAL FILTRATION

Kimyasal filtrasyon medyası havadaki kirletici gazları kimyasal reaksiyon ile absorbe eden pelletlerden oluşur ve diğer hava filtreleme sistemlerindeki filtre medyaları gibi çalışmaz.

EN779 Classification

EN 779

G ve F gruplarından oluşan EN779:2002 standardı, G, M ve F gruplarından oluşacak şekilde EN779:2012 ile revize olmuştur.

EN1822 Classification

EN 1822

Havalandırma ve iklimlendirme sistemlerinin olduğu temizoda uygulamalarında örneğin ilaç endüstrisinde kullanılan verimli hava filtreleri (EPA).

ISO14644 Cleanroom Classification

EN ISO 14644-1

EN ISO 14644-1 standardı; temiz odalar ve temiz odalarda birlikte kontrol edilen ortamların hava temizliğinin özellikle hava ile taşınan partikül konsantrasyonuna göre sınıflandırılmasını kapsar.