房中房型精密机房围护结构节能设计

Energy-saving Design of Building Envelope for Precision Computer Room with “Room in Room” Structure

本文以成都市天府软件园的房中房型精密机房作为研究对象,借助Energy Plus软件针对机房的墙体和楼板在不同保温性能时的全年负荷进行数值模拟计算,从而确定该机房的围护结构的节能措施。模拟结果表明:精密机房隔墙和上下楼板在不作保温处理时的全年负荷最低,其负荷值相比参照GB 50189—2015《公共建筑节能设计标准》进行外墙、屋面热工性能设计时的负荷值分别降低0.84%、11.45%。若机房的墙体为钢筋混凝土剪力墙结构,对降低机房全年冷负荷更为有利。

The precision computer machine room with ＂room in room＂structure in Chengdu Tianfu Software Park was studied in this research. By using Energy Plus software,the annual energy load of machine room under different thermal performance of walls and floors was numerically computed,based on which the building envelope design was finally determined. The simulation results show that the minimal energy load can be found when wall,ceiling and floor were treated with no insulation. It achieves 0. 84% energy saving compared with the case in which walls are insulated according to the GB 50189—2015 ＂Design standard for energy efficiency of public building＂. About11. 45% energy saving is showed compared with the case in which the floors are insulated according to the GB50189—2015 ＂Design standard for energy efficiency of public building ＂. Additionally the concrete shear wall structure is helpful for reducing cooling load of computer machine room.