太阳能单户建筑室内热性能分析

Indoor thermal performance analysis of solar single residential building

鉴于中国寒冷地区的单户建筑存在能源消耗高、能源利用率低等众多问题,根据农民冬季生活用能习惯,构建三套太阳能单户建筑分别是砖混结构建筑、混凝土结构建筑以及土坯建筑,利用Fluent软件模拟冬季工况下这三种建筑室内的温度场,同时还计算了砖混结构建筑的PMV指标.通过计算发现低温辐射床无论是303K还是308K砖混结构建筑的室内温度都符合GB/T 18883—2002《室内空气质量标准》相关规定,而钢混结构建筑或土坯建筑,只有当室内低温辐射床为308K时,室内温度才符合相关规定;且砖混结构建筑具有更好的保温效果和热舒适度;太阳能单户建筑定为砖混结构建筑.

In view of numerous problems of thermal isolation of single residential building in cold area of China such as high energy consumption and low energy efficiency,three sets of solar single residential building are constructed in accordance to the living customs of peasantry in winter in connection with energy usage,namely brick-concrete structure building,steel-reinforced concrete structure building,and adobe building.Indoor temperature field in these three buildings in winter season condition is simulated with software Fluent and the PMV index of the brick-concrete structure building is evaluated.It is found that when the temperature of the low-temperature radiation bed is either 303 Kor 308K,the indoor temperature of the brick-concrete structure building will be consistent with the relevant stipulations in GB/T18883—2002＂Standard of indoor air quality＂.As for the reinforced structure or adobe building,only when the temperature of low-temperature radiation bed is 308 K,the indoor temperature will meet the relevant stipulations.Moreover,the brick-concrete structure will have better thermal insulation effect and thermal comfortableness.In conclusion,the single residential solar building the brick-concrete structure building.