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介绍了2001年夏天对南京某一建筑围护结构的衰减倍数与延迟时间进行现场测试的情况.根据房间的内表面吸热频率响应、内表面温度、室内气温和室外综合温度,可计算出建筑围护结构的衰减倍数与延迟时间.实验结果表明,对于建筑围护结构热传导的衰减倍数与延迟时间,0阶和1阶的现场测试值与理论计算值比较吻合,2阶值则相差很大,因此很难精确测试出2阶值.然而,现场条件下基于1阶以内来分析建筑围护结构的衰减倍数与延迟时间仍然是可行的,因为在计算1阶时建筑围护结构的衰减倍数已达到20,完全可以满足工程要求.
This paper introduces the field test of the attenuation multiples and delay time of a building envelope in Nanjing in the summer of 2001. According to the heat absorption frequency response, the inner surface temperature, the indoor air temperature and the outdoor synthesis temperature of the inner surface of a building, the building The attenuation multiples and the delay time of the envelope are shown in the experiment.The experimental results show that the field test values of the 0 order and the 1 order are in good agreement with the theoretically calculated values and the second order values are quite different for the attenuation multiples and the delay times of the heat conduction of the building envelope, , It is difficult to accurately test the second order value.However, based on the first-order analysis of the building envelope under the conditions of attenuation and delay time is still feasible, because in the calculation of first-order building envelope attenuation factor Has reached 20, fully meet the engineering requirements.