Influence Of The Temperature Of Outdoor Air And The Location Of Thermal Insulation On Intermittent Heating Room

Indoor thermal environment has received more and more attentions in HVAC study and application fields with increasing urbanization and industrialization in China. Some standards in hot summer and cold winter(HSCW)zone have been promulageted for guiding the HVAC and energy-efficiency design of residential buildings in these zones.In hot summer and cold winter zone, In order to make room at comfortable temperature, we need room heating. but the heating behavior of this zone is different with the continuous heating in the north, It belongs to the intermittent heating. People can decide the heating time according own need.There are many research about winter heating energy consumption in hot summer and cold winter region. But under the condition of intermittent heating, few people pay attention to a detailed energy consumption analysis of each part in the room. A lot of research has been carried out in the condition of long time continuous heating. Therefore, in order to get energy consumption characteristics of Indoor parts in hot summer and cold winter region, numerical simulations have been carried out for analyzing the energy consumption characteristics of the indoor air, exterior wall, interior wall and regenerator under the condition of intermittent heating. We study the influence of thermal insulation layer location for intermittent heating room energy consumption under the condition of different outdoor temperatures as to provide theoretical basis for building energy conservation.The study show that,in intermittent heating process,at the beginning of heating,the regenerator such as furniture and building envelope has a low temperature. Therefore, after the heating, a large amount of energy is used to heat the regenerator, which forms the invalid energy consumption. The shorter the duration of heating, the longer the intermittent time, the lower the temperature of the regenerator in the initial stage of heating, the greater the invalid energy consumption. The energy consumption of exterior wall with Internal insulation is lower than the way of external insulation. Therefore, the intermittent heating room used internal insulation is more energy saving.Through the analysis of indoor temperature change and energy consumption characteristics under different outdoor air temperature conditions, the results show that the lower the temperature, the shorter the length of heating, the more obvious the advantage of internal insulation. When outdoor temperature reach 4℃,there is no obvious difference between the two kinds of heat thermal insulation for room energy consumption.