Limiting criteria for human exposure to low humidity indoors

David Wyon; Lei Fang; H. Meyer; Jan Sundell; C. Weirsoee; N. SederbergOlsen; H. Tsutsumi; T. Agner; Povl Ole Fanger

Limiting criteria for human exposure to low humidity indoors

David Wyon, Lei Fang, H. Meyer, Jan Sundell, C. Weirsoee, N. SederbergOlsen, H. Tsutsumi, T. Agner, Povl Ole Fanger

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

Thirty subjects (17 female) were exposed for 5 hours to clean air at 5%, 15%, 25% and 35% RH at 22 deg.C. Another 30 subjects (15 female) were similarly exposed to air polluted by carpet and linoleum at 18, 22 and 26 deg.C with humidity 2.4 g/kg dry air (=15% RH at 22 deg.C), and at 22 deg.C, 35% RH. The subjects performed simulated office work throughout each exposure. Building Related Symptom (BRS) intensity was reported on visual-analogue scales. Tests of eye, nose and skin function were applied. In these short exposures subjective discomfort, though significantly increased by low humidity, was very moderate even at 5% RH. However, tear film quality as indicated by the Mucous Ferning Test deteriorated significantly at RH22 deg.C, significantly more rapid blink rates were observed at 5% than at 35% RH, and skin became significantly more dry at 15% than at 35% RH.

Original language	English
Title of host publication	Proceedings of Indoor Air 2002
Publication date	2002
Publication status	Published - 2002
Event	9th International Conference on Indoor Air Quality and Climate - Monterey, CA, United States Duration: 30 Jun 2002 → 5 Jul 2002 Conference number: 9 http://www.indair.org/index_files/Page325.htm

Conference

Conference	9th International Conference on Indoor Air Quality and Climate
Number	9
Country/Territory	United States
City	Monterey, CA
Period	30/06/2002 → 05/07/2002
Internet address	http://www.indair.org/index_files/Page325.htm

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title = "Limiting criteria for human exposure to low humidity indoors",

abstract = "Thirty subjects (17 female) were exposed for 5 hours to clean air at 5%, 15%, 25% and 35% RH at 22 deg.C. Another 30 subjects (15 female) were similarly exposed to air polluted by carpet and linoleum at 18, 22 and 26 deg.C with humidity 2.4 g/kg dry air (=15% RH at 22 deg.C), and at 22 deg.C, 35% RH. The subjects performed simulated office work throughout each exposure. Building Related Symptom (BRS) intensity was reported on visual-analogue scales. Tests of eye, nose and skin function were applied. In these short exposures subjective discomfort, though significantly increased by low humidity, was very moderate even at 5% RH. However, tear film quality as indicated by the Mucous Ferning Test deteriorated significantly at RH22 deg.C, significantly more rapid blink rates were observed at 5% than at 35% RH, and skin became significantly more dry at 15% than at 35% RH.",

author = "David Wyon and Lei Fang and H. Meyer and Jan Sundell and C. Weirsoee and N. SederbergOlsen and H. Tsutsumi and T. Agner and Fanger, {Povl Ole}",

year = "2002",

language = "English",

booktitle = "Proceedings of Indoor Air 2002",

note = "9th International Conference on Indoor Air Quality and Climate, Indoor Air 2002 ; Conference date: 30-06-2002 Through 05-07-2002",

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TY - GEN

T1 - Limiting criteria for human exposure to low humidity indoors

AU - Wyon, David

AU - Fang, Lei

AU - Meyer, H.

AU - Sundell, Jan

AU - Weirsoee, C.

AU - SederbergOlsen, N.

AU - Tsutsumi, H.

AU - Agner, T.

AU - Fanger, Povl Ole

N1 - Conference code: 9

PY - 2002

Y1 - 2002

N2 - Thirty subjects (17 female) were exposed for 5 hours to clean air at 5%, 15%, 25% and 35% RH at 22 deg.C. Another 30 subjects (15 female) were similarly exposed to air polluted by carpet and linoleum at 18, 22 and 26 deg.C with humidity 2.4 g/kg dry air (=15% RH at 22 deg.C), and at 22 deg.C, 35% RH. The subjects performed simulated office work throughout each exposure. Building Related Symptom (BRS) intensity was reported on visual-analogue scales. Tests of eye, nose and skin function were applied. In these short exposures subjective discomfort, though significantly increased by low humidity, was very moderate even at 5% RH. However, tear film quality as indicated by the Mucous Ferning Test deteriorated significantly at RH22 deg.C, significantly more rapid blink rates were observed at 5% than at 35% RH, and skin became significantly more dry at 15% than at 35% RH.

AB - Thirty subjects (17 female) were exposed for 5 hours to clean air at 5%, 15%, 25% and 35% RH at 22 deg.C. Another 30 subjects (15 female) were similarly exposed to air polluted by carpet and linoleum at 18, 22 and 26 deg.C with humidity 2.4 g/kg dry air (=15% RH at 22 deg.C), and at 22 deg.C, 35% RH. The subjects performed simulated office work throughout each exposure. Building Related Symptom (BRS) intensity was reported on visual-analogue scales. Tests of eye, nose and skin function were applied. In these short exposures subjective discomfort, though significantly increased by low humidity, was very moderate even at 5% RH. However, tear film quality as indicated by the Mucous Ferning Test deteriorated significantly at RH22 deg.C, significantly more rapid blink rates were observed at 5% than at 35% RH, and skin became significantly more dry at 15% than at 35% RH.

M3 - Article in proceedings

BT - Proceedings of Indoor Air 2002

T2 - 9th International Conference on Indoor Air Quality and Climate

Y2 - 30 June 2002 through 5 July 2002

ER -

Limiting criteria for human exposure to low humidity indoors

Abstract

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