A Study on Thermal Environment Properties of the Water-Retentive Artificial Turf System

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  • TEBAKARI Taichi
    Department of Civil Enginnering, Fukuoka University Department of Environmental Engineering, Toyama Prefectural University
  • MARUYAMA Tatsuya
    Department of Civil Enginnering, Fukuoka University Ito Land Readjustment Office, Housing & Urban Planning Bureau of Fukuoka City
  • INUI Masahiro
    Faculty of Sports and Health Science, Fukuoka University

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Other Title
  • 保水性人工芝システムの熱環境特性に関する基礎的研究
  • ホスイセイ ジンコウ シバ システム ノ ネツ カンキョウ トクセイ ニ カンスル キソテキ ケンキュウ

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Abstract

To clarify the properties of the thermal environment of a water-retentive artificial turf system (W-ATS), we estimated the hydrologic parameters of thermal conductivity, heat capacity, and surface albedo of the W-ATS and natural grass. We measured surface temperature and evaporation of the W-ATS and natural grass using a model experiment. <BR>As the results, the properties of the thermal environment of the W-ATS were as follows. Thermal conductivity of the W-ATS was lower than that of natural grass and it is difficult for the W-ATS to convey a radiant heat to the ground. Heat capacity of the W-ATS was lower than that of natural grass, and it contributed that surface temperature change of the W-ATS is larger. Therefore, surface temperature of the W-ATS was higher than that of natural grass in the daytime and lower at the nighttime. Albedo of the W-ATS was one fourth of that of natural grass and reflected shortwave radiation from the WATS surface was lower than that from natural grass surface. These results indicate that the WATS leads to the rise of soil temperature. Furthermore, it was found that evaporation of the W-ATS was one fourth of evapotranspiration of natural grass.

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