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以南京地区冬季的室外空气综合温度为计算条件,利用FLUENT软件模拟分析了空心混凝土砌块、EPS外保温、复合相变混凝土砌块应用于南向外墙时对空调房间和非空调房间室内热环境的影响。研究结果表明:对于空调房间和非空调房间,相变石膏板内置时的利用效果均优于外置;对于空调房间,EPS外保温和内置相变温度为19℃的相变石膏板的复合相变混凝土砌块下的内壁面热流波幅分别较空心混凝土砌块减小73%、43%,而房间总散热量分别较空心混凝土砌块减小6%、45%;对于非空调房间,内置相变温度为15℃的相变石膏板的复合相变混凝土砌块下的室内空气平均温度分别较空心混凝土砌块和EPS外保温提高2.45℃和2.24℃,而温度波幅分别较空心混凝土砌块和EPS外保温减小82%和51%。
Based on the winter outdoor air temperature in Nanjing area, the FLUENT software was used to simulate the air-conditioned room and non-air-conditioned room with hollow concrete block, EPS external insulation and composite phase change concrete block Environmental impact. The results show that: for air-conditioned rooms and non-air-conditioned rooms, the use of phase change gypsum board built-in effect are better than external; for air-conditioned rooms, EPS external insulation and phase transition gypsum board built phase transition temperature of 19 ℃ composite phase The heat flow amplitude of the inner wall under the variable concrete block decreased by 73% and 43% respectively compared with that of the hollow concrete block, while the total heat dissipation in the room decreased by 6% and 45% respectively compared with that of the hollow concrete block. For non-air-conditioned rooms, The average indoor air temperature under phase change gypsum board with phase change gypsum board changed by 15 ℃ was 2.45 ℃ and 2.24 ℃ higher than that of hollow concrete block and EPS respectively. EPS insulation is reduced by 82% and 51%.