Study on WBGT for heat stroke evaluation during summer in Japanese living rooms
Nokuto Mizutani*, Naja Aqilah, Supriya Khadka, H. B. Rijal
Tokyo City University, Tokyo, Japan
DOI: 10.62744/CATE.45273.1168-362-370
Email: mizutani.nokuto@gmail.com
Abstract:
As the number of heat stroke cases in residential buildings has increased countermeasures have to be
taken. Although there are many studies on the relationship between heat stroke and outdoor environment, there are only a few studies which used Wet-Bulb Globe Temperature (WGBT) for the evaluation of heat stroke in the dwellings. The main objective of this study is to evaluate the risk of heatstroke occurrence using WBGT for the indoor environment during summer. A field measurement was conducted in summer of 2021 and 2022 in 33 dwellings to measure the indoor air temperature, relative humidity, and globe temperatures for every 10 minutes in the living room. Outdoor WBGT data was obtained from the Japan Meteorological Agency. The result suggests that indoor WBGT was 23~27 C in 2021 and 22~26 C in 2022, indicated that the risk of heatstroke occurrence is low in investigated dwellings. In both years, a correlation was observed between indoor air temperature and WBGT. The result showed that when indoor air temperature increased, WBGT is also increased.
Keywords: Living Room, Summer, Field Survey, WBGT, Heat Stroke