As part of its measures to deal with the hot conditions expected at the 2020 Tokyo Olympic and Paralympic Games, on Aug. 13 the Tokyo Metropolitan Government conducted an experiment to measure the effects on pavement surface temperature of spraying the road surface with water. Data from the experiments were released to the media.
The experiment was conducted from 4:00 a.m. to 10:00 a.m. along a 120 m section of sidewalk along Uchibori Street in the Imperial Palace's outer gardens in Chiyoda Ward. In the experiment, open-ended tubes used in agricultural work eres placed at the edge of the sidewalk to supply water. Surface temperature readings were taken every 30 minutes for three different experimental scenarios:
spraying water beginning at 4:00 a.m.spraying water beginning at 7:00 a.m.not spraying any water The experiment found that where water had been sprayed, the road surface temperature remained in the 27 to 29˚C range even when the air temperature exceeded 30˚C. Where no wa…
The experiment was conducted from 4:00 a.m. to 10:00 a.m. along a 120 m section of sidewalk along Uchibori Street in the Imperial Palace's outer gardens in Chiyoda Ward. In the experiment, open-ended tubes used in agricultural work eres placed at the edge of the sidewalk to supply water. Surface temperature readings were taken every 30 minutes for three different experimental scenarios:
spraying water beginning at 4:00 a.m.spraying water beginning at 7:00 a.m.not spraying any water The experiment found that where water had been sprayed, the road surface temperature remained in the 27 to 29˚C range even when the air temperature exceeded 30˚C. Where no wa…