Impact of building envelope design parameters on diurnal building anthropogenic heat emission

Anthropogenic heat fluxes from buildings (QF,B) are a major source of additional heating in cities, but vary both spatially and temporally. Knowledge temporal variations QF,B is critical to modulate urban climate through appropriate building design. Based on new method determine [1], this study investigates the influences envelope design parameters magnitude diurnal pattern by season parametric energy modelling Beijing. Using K-mean clustering, distinctly representative patterns each identified. With classification-based analysis, we rank understand their roles causing these distinct patterns. We conclude that: (1) most important influencing U-value thermal mass. (2) U-values effectively daily all seasons. Buildings with small (e.g., U-0.2) have lower consumption, resulting an up 73% reduction mean winter. (3) Thermal mass more autumn/spring QF,B. It can reduce peak 68% shift dominated mechanical cooling (peak during 15:00–17:00) into natural ventilation 01:00–06:00) 8–15 h lag. (4) Combined ventilation, designs lightweight fabric) should be considered achieve energy-saving improving outdoor environment. Our results could help identify useful strategies mitigate warming/cold periods that hot or cold cities.