Numerical study on the influence of insulation position on energy consumption under intermittent heating room

Abstract

The most commonly used way of heating devices is “part-time and part-space” in hot summer and cold winter zone. In order to explore the energy-saving effect of using inside and outside insulation location for external walls under this heating method, the load characteristics and heat transfer characteristics of intermittent heating rooms with different outdoor temperatures and insulation location are simulated by numerical study. The results show that there is a critical heating duration when the more energy-saving insulation method is selected for intermittent heating buildings. When the operation duration of heating device is less than the critical value, the internal insulation wall is more energy saving. While the outside insulation of external wall has a better energy-saving effect with a heating duration longer than critical value.