Reliability of electret filters

Matti Lehtimäki, Kimmo Heinonen

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Abstract

The properties of electret filter materials have been investigated. The removal efficiency of electret filter materials used in ventilation filters and in room air cleaners has been measured for particle sizes ranging from 0.1 to 5 μm. The results indicate that the efficiency and reliability of an electret filter depend to a great extent on the stability of the electrostatic charge in the filter material. It has been found that the efficiency of electret filter material can decrease significantly when exposed to diesel fume aerosol or cigarette smoke aerosol. Arizona road dust aerosol, however, causes only a minor decrease in efficiency. The extensive use of electret filter materials in ventilation applications should be avoided until the stability and the reliability of the filtration has been verified by long-term field tests.
Original languageEnglish
Pages (from-to)353-355
Number of pages3
JournalBuilding and Environment
Volume29
Issue number3
DOIs
Publication statusPublished - 1994
MoE publication typeA1 Journal article-refereed

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Electrets
filter
Aerosols
efficiency
Ventilation
aerosol
Air cleaners
ventilation
Fumes
Smoke
Dust
Electrostatics
Particle size
air
road
smoke
diesel
cause
particle size
material

Cite this

Lehtimäki, Matti ; Heinonen, Kimmo. / Reliability of electret filters. In: Building and Environment. 1994 ; Vol. 29, No. 3. pp. 353-355.
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Reliability of electret filters. / Lehtimäki, Matti; Heinonen, Kimmo.

In: Building and Environment, Vol. 29, No. 3, 1994, p. 353-355.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Reliability of electret filters

AU - Lehtimäki, Matti

AU - Heinonen, Kimmo

PY - 1994

Y1 - 1994

N2 - The properties of electret filter materials have been investigated. The removal efficiency of electret filter materials used in ventilation filters and in room air cleaners has been measured for particle sizes ranging from 0.1 to 5 μm. The results indicate that the efficiency and reliability of an electret filter depend to a great extent on the stability of the electrostatic charge in the filter material. It has been found that the efficiency of electret filter material can decrease significantly when exposed to diesel fume aerosol or cigarette smoke aerosol. Arizona road dust aerosol, however, causes only a minor decrease in efficiency. The extensive use of electret filter materials in ventilation applications should be avoided until the stability and the reliability of the filtration has been verified by long-term field tests.

AB - The properties of electret filter materials have been investigated. The removal efficiency of electret filter materials used in ventilation filters and in room air cleaners has been measured for particle sizes ranging from 0.1 to 5 μm. The results indicate that the efficiency and reliability of an electret filter depend to a great extent on the stability of the electrostatic charge in the filter material. It has been found that the efficiency of electret filter material can decrease significantly when exposed to diesel fume aerosol or cigarette smoke aerosol. Arizona road dust aerosol, however, causes only a minor decrease in efficiency. The extensive use of electret filter materials in ventilation applications should be avoided until the stability and the reliability of the filtration has been verified by long-term field tests.

U2 - 10.1016/0360-1323(94)90033-7

DO - 10.1016/0360-1323(94)90033-7

M3 - Article

VL - 29

SP - 353

EP - 355

JO - Building and Environment

JF - Building and Environment

SN - 0360-1323

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ER -