Field Measurements of Bedroom Environment in Winter and Summer on Qinghai-Tibet Plateau

Department of Architecture, School of Design, Shanghai Jiao Tong University, China

^* Corresponding author: lanli2006@sjtu.edu.cn

Abstract

Field measurements of the bedroom environment on Qinghai-Tibet Plateau was conducted by continuously measuring the air temperature, relative humidity, and CO₂ concentration in the bedrooms of 197 residents (100 in winter and 97 in summer) for 7 days. And the daily environmental controls of residents were recorded. The results showed that the night-time thermal environment in bedrooms on the Qinghai-Tibet Plateau was more warmer and wetter in summer than in winter, but the CO₂ concentration was lower in winter. On both winter and summer nights, drops in air temperature, relative humidity and CO₂ concentration in the bedrooms were found when doors or windows were opened, increases in relative humidity and CO₂ concentration in bedrooms were found when there were more occupants in the bedrooms. This study also found there was a greater reduction of CO₂ concentrations when doors or windows were opened in the bedrooms of multiple occupants compared to the bedrooms of a single occupant. And on winter nights, the humidity increase in the bedrooms caused by the action of the humidifier was not affected by the status of doors and windows.