Microclimate and Human Thermal Comfbrt in Pipe Greenhouses with Insect-proof Screens for Vegetable Cultivation with Restricted Use of Chemical Pesticides
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- SHIMAZU Teruaki
- National Agricultural Research Center for Western Region
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- HAMAMOTO Hiroshi
- National Agricultural Research Center for Western Region
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- OKADA Toshihisa
- National Agricultural Research Center for Western Region
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- IKFDA Takashi
- National Agricultural Research Center for Western Region
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- TANAKA Kazuo
- National Agricultural Research Center for Western Region
抄録
The influence of insect-proof screens in the vents of a greenhouse on the microclimate and on human thermal comfort was investigated in this research. Komatsuna (Brassica campestris L.) was cultivated in the screened greenhouse and in an unscreened greenhouse. In the screened greenhouse, wind speed seldom exceeded 0.5m・s-1 at a height of 1.5m, and the air temperature and vapor pressure deficits at a height of 0.2m were comparable to those in the unscreened greenhouse. However, the air-temperature difference between heights of 0.2 and 3.0m was much larger (8℃) in the screened greenhouse than in the unscreened greenhouse (2℃) during days with high solar radiation and low wind speed. The inside-outside temperature difference was much higher than that in the unscreened greenhouse when the outside wind speed was lower than 2 m・s-1. The wet-bulb globe temperature (WBGT) in the screened greenhouse was 3 to 7 ℃ higher than that in the unscreened greenhouse during the day. The level of human thermal comfort measured by WBGT in the screened greenhouse was improved by means of forced airflow directed onto the worker to promote convection, and by means of the addition of skylights to promote chimney-effect ventilation.
収録刊行物
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- 農業気象
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農業気象 60 (5), 813-816, 2005
日本農業気象学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390282679645636352
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- NII論文ID
- 130006847481
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- ISSN
- 18810136
- 00218588
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可