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1997•Journal of Architecture and Planning (Transactions of AIJ)Open access

EXPERIMENTAL STUDY ON EFFECTS OF LOCALIZED COOL AIRFLOW ON THERMAL COMFORT IN SUMMER CONDITIONS

Hiroko Kubo, Norio Isoda, Takuko Yanase

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Abstract

To clarify effects of localized airflow on thermal comfort, physiological and psychological responses of the total of 960 female subjects to localized airflow was studied in a climate chamber. Experiments were conducted in summer under 60 kinds of the following conditions : four air temperatures (25℃, 27.5℃, 30℃ and 32.5℃), six types of localized airflow (a uniform airflow, four oscillating airflow and a randomly fluctuating airflow reproducing a natural wind) with average velocity of 1.0m/s and three airflow temperatures (equal to, 5℃ and 10℃ lower than room air temperature). The comfortable zone of combined air temperature and airflow temperature became narrow and shifted to high room temperature and high airflow temperature according to the increase of maximum airflow velocity.

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To clarify effects of localized airflow on thermal comfort, physiological and psychological responses of the total of 960 female subjects to localized airflow was studied in a climate chamber. Experiments were conducted in summer under 60 kinds of the following conditions : four air temperatures (25℃, 27.5℃, 30℃ and 32.5℃), six types of localized airflow (a uniform airflow, four oscillating airflow and a randomly fluctuating airflow reproducing a natural wind) with average velocity of 1.0m/s and three airflow temperatures (equal to, 5℃ and 10℃ lower than room air temperature). The comfortable zone of combined air temperature and airflow temperature became narrow and shifted to high room temperature and high airflow temperature according to the increase of maximum airflow velocity.

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Available abstract

To clarify effects of localized airflow on thermal comfort, physiological and psychological responses of the total of 960 female subjects to localized airflow was studied in a climate chamber. Experiments were conducted in summer under 60 kinds of the following conditions : four air temperatures (25℃, 27.5℃, 30℃ and 32.5℃), six types of localized airflow (a uniform airflow, four oscillating airflow and a randomly fluctuating airflow reproducing a natural wind) with average velocity of 1.0m/s and three airflow temperatures (equal to, 5℃ and 10℃ lower than room air temperature). The comfortable zone of combined air temperature and airflow temperature became narrow and shifted to high room temperature and high airflow temperature according to the increase of maximum airflow velocity.

Key concepts: Airflow, Air temperature, Environmental science, Thermal comfort, Thermal, Meteorology, Mechanics, Materials science

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EXPERIMENTAL STUDY ON EFFECTS OF LOCALIZED COOL AIRFLOW ON THERMAL COMFORT IN SUMMER CONDITIONS — Research Paper | ScholarLens