三种墙体保温隔热性能的数值分析

利用计算流体力学和计算传热学的方法,建立数值仿真的物理模型和数学模型,对比较适合"夏热冬冷"地区的三种外墙进行了传热计算,并用相关资料进行验证.通过数值仿真计算了由墙体传入室内的热量(夏季)或由室内通过墙体传到室外的热量(冬季 ),并对三种墙体的热工性能进行了比较.研究结果表明外挂式封闭间层墙体的夏季隔热性能及冬季保温性能都较好,可以在"夏热冬冷"地区推广使用.

Numerical Analysis on the Heat Presrvation and Heat Insulation Performance of Three Kinds of Walls

A physical model and a mathematic model of numerical simulation were created by using the methods to calculate hydromechanics and heat transfer. The heat transfer of three kinds of outer walls fit for areas hot in summer and cold in winter was calculated and verified with relevant data. The quantity of heat transferred from outside to inside by the walls in summer and the quantity of heat transferred from inside to outside by the walls in winter were calculated by using numerical simulation, and the thermal performance of three kinds of walls were compared. The result has shown that the outside suspension wall with seal intercalated ked has good heat insulation performance in summer and good heat preservation performance in winter. This kind of wall can be widely used in areas hot in summer and cold in winter.