Thermal and humidity environment and bathing behavior in residential bathrooms in hot summer and cold winter zone

The thermal and humidity environment of residential bathrooms in Shanghai is measured on the spot, the characteristics of thermal and humidity environment are analysed, and the bathing behavior of typical people is investigated by web-based questionnaires. The results show that the thermal and humidity environment of the bathroom is obviously influenced by the bathing behaviors. The air temperature rises rapidly after the shower starts, the relative humidity approaches saturation, and it takes a long time for the relative humidity to return to the initial state after the shower ends. Compared with the conventional home scene, the thermal and humidity environment in the bathroom deviates from the conventional thermal comfort zone. The bathing behavior of residents in hot summer and cold winter zone is significantly influenced by the seasons, and the showering water temperature is warmer in winter (about 43.3 ℃) and cooler in summer (generally 36-40 ℃). The bathing frequency is mainly once a day or once every two days, the duration is mostly 5-10 min in summer and 10-20 min in winter. This paper also discusses some measures to improve the bathroom environment and the particularity of bathroom thermal comfort.