著者

清澤 裕美 野崎 淳夫 吉澤 晋

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.70, no.596, pp.29-35, 2005-10-30 (Released:2017-02-11)

参考文献数

13

被引用文献数

2

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The purpose of this paper is to quantitatively determine the removal performance on cedar pollen of domestic air cleaners which have widely been utilized in ordinary houses. Five domestic air cleaners were tested in an experimental chamber, using cedar pollen and the JIS Test Powder. The evaluation were made with an index of equivalent clean air rates (ECAR). The results showed that the removal rates of cedar pollen were 19.12〜180.2(m^3/h) for 0.3μm particles, and 18.7〜213.0 (m^3/h) for 0.5μm particles except for one type and with JIS Test Powder 20〜50(m^3/h) for all type of domestic air cleaners. The pollen has smaller particle portion than the JIS Test Powder No.11 and the performance of cleaners cannot be estimated simply from the morphological size distribution of the test aerosols. The analytical prediction of pollen concentration were made and compared with the results of experiment to show a fairly good fit for particles smaller than 1μm.

著者

野崎 淳夫 清澤 裕美 吉澤 晋

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.69, no.576, pp.37-42, 2004-02-28 (Released:2017-01-27)

参考文献数

7

被引用文献数

2 4

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In recent years, air cleaners are often used because of increasing interest in room air quality. However, there is currently no unified method for determining the removal effectiveness of air-cleaners. Here, we report the results of experiments on five type of domestic air cleaner units in a experimental room, using ETS(Environmental Tobacco Smoke). This study was carried out to determine the removal effectiveness of air cleaners on suspended particulate matter evaluated employing an index of equivalent clean air rates(ECAR). The results showed that the removal rates of suspended particulate matter were 59.1〜125.7(m^3/h) for 0.3μm particles, and 115.5〜188.7(m^3/h) for 0.5μm particles respectively with fan-filter units. The rates were much lower for the electro-static collector type unit without fan : 3.9(m^3/h) for 0.3μm particles, and 14.8(m^3/h) for 0.5μm particles respectively

著者

清澤 裕美 吉澤 晋

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.66, no.548, pp.63-68, 2001-10-30 (Released:2017-02-04)

参考文献数

16

被引用文献数

5

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The purpose of this paper is to quantitatively determine the rate of intrusion of cedar pollen to indoor environment, to estimate the exposure dose and to provide the control measures. Cedar pollens were determined microscopically on settle plates covered with adhesive material in wooden dwellings, flats, and several buildings. The settlements were variable according to the height and position of the rooms. The settlements on the floor were 1.5 to 2 times higher than at the breathing zone and those at just the inside of the windows were 5 to 6 times as much as at the center of the rooms. The rates of settlement were 0.4 to 0.8 p/cm2/day at the center of house and 1.9 to 2.8 at inside of windows. The intrusion rates were about 1.6% at the center of the house, 3.1% at the window and 26% at the places with opened windows. Throughout all the measurements, inside/ outside ratio, which is the simple ratio of settled pollen inside to those outside, was 1 to 2%. The calculated doses inside the room were 1 to 2% of outside. The doses become about twice at the windows and 10 to 20 times at places with opened windows of values at the center of house.