Purpose - It is rather easy to control thermal air conditions in narrow-air tight living spaces. However, it is not so easy to keep good air quality in the spaces. Indoor air condition is especially important to keep the health condition of the people. We researched the environmental condition of the temporary houses. Methodology -...

Purpose / Context – To clarify the association between the indoor environment of residential build-ings and cerebrovascular disease, an epidemiological survey of elderly persons living in three areas of Japan that have different rates of death due to cerebrovascular disease was conducted. Methodology / Approach – This paper describes field measurements of indoor temperatures and...

Purpose / Context - The aim of this study is to clarify an estimation method of humidification for infection control in residences. In Japan indoor humidity is very low in winter especially in recent insulated houses without unvented stoves. Dwellers know that it is necessary to keep humidity ade-quate for infection control, but most of...

Purpose / Context - Particulate matter (PM) is one of the main indoor air pollutions, and it can cause a wide range of diseases that lead to a significant reduction of human life. This study aimed at investigating of characteristics of particle concentrations for PM2.5 and size distribution during different activities in residential houses. Methodology...

Purpose / Context –The purpose of this study is to investigate indoor environment and energy saving performance of houses, which employ passive ventilation systems, built in mild climate region and hot humid region in Japan.