A study on indoor thermal environment of wooden detached house retrofitted with inner envelope in summer

Abstract

In Japan, energy conservation in houses is accelerating to achieve the target of reducing greenhouse gas emissions. In this situation, inner envelope was proposed, that ensures thermal insulation with the spatial configuration of non-residential space and partition walls. However, the thermal environment has not been discussed yet. In this study, actual measurement survey was conducted to clarify the issues of the indoor thermal environment in summer in the house retrofitted with inner envelope. As a result, it was confirmed that the room temperature rises due to solar radiation. Furthermore, to improve thermal environment in summer, the effects of solar shading, cross ventilation, and air conditioning were investigated by simulation. It was found that solar shading is effective in improving the thermal environment of habitable room during the daytime.