Study on the Method of Relative Comparison of Cool Spots Based on WBGT Reduction Effect

A Case Study of Station Squares in Osaka Prefecture

Abstract

The purpose of this study is to evaluate the heat mitigation effect of cool spots in front of train stations with combined installation of sunshades and mist spraying devices. a method was proposed to compare and rank cool spots with sunshades and misting devices using WBGT. Field measurements were conducted at three sites in Osaka Prefecture, and the WBGT differences between cool spots with and without heat mitigation measures were analyzed. We also proposed an evaluation method using the WBGT values observed by the Osaka District Meteorological Observatory as reference values, and made it possible to rank the WBGT values measured at different dates and times at the three sites by making them relative.