| 现场条件下建筑结构的热传递衰减倍数与延迟时间 |
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| 引用本文： | 彭昌海,吴智深,陈振乾,李敏.现场条件下建筑结构的热传递衰减倍数与延迟时间[J].东南大学学报,2010,26(2):249-253. |
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| 作者姓名： | 彭昌海 吴智深 陈振乾 李敏 |
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| 作者单位： | 彭昌海(东南大学城市工程科学技术研究院,南京,210096;东南大学城市与建筑遗产保护教育部重点实验室,南京,210096);吴智深,陈振乾,李敏(东南大学城市工程科学技术研究院,南京,210096) |
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| 基金项目： | The Advance Research Projects of Southeast Universityfor the National Natural Science Foundation of China（No.XJ0701262）; the National Key Technologies R＆D Program of China during the 11th Five-Year Plan Period（No.2008BAJ12B04 2008BAJ12B05 2006BAJ03A04） |
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| 摘 要： | 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.
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| 关 键 词： | 衰减倍数 延迟时间 热传递 建筑结构 现场 |
Decay rates and time lags of heat conduction in building construction under field conditions |
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| Peng Changhai,Wu Zhishen Chen Zhenqian Li Min.Decay rates and time lags of heat conduction in building construction under field conditions[J].Journal of Southeast University(English Edition),2010,26(2):249-253. |
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| Authors: | Peng Changhai Wu Zhishen Chen Zhenqian Li Min |
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| Institution: | 1 .International Institute for Urban Systems Engineering,Southeast University,Nanjing 210096,China;2. Key Laboratory of Urban and Architectural Heritage Conservation of Ministry of Education,Southeast University,Nanjing 210096,China) |
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| Abstract: | The field measurements of decay rates and time lags of heat conduction in a building construction taken in Nanjing during the summer of 2001 are presented.The decay rates and time lags are calculated according to the frequency responses of the heat absorbed by the room＇s internal surfaces,inside surface temperature,indoor air temperature and outdoor synthetic temperature.The measured results match very well with the theoretical results of the zeroth and the first order values of the decay rates and time lags of heat conduction in the building construction,but the difference between the measured values and the theoretical values for the second order is too great to be accepted.It is therefore difficult to accurately test the second order value.However,it is still advisable to complete the analysis using the zeroth-and the first-orders values of the decay rates and time lags of heat conduction in building construction under field conditions,because in these cases the decay rates of heat conduction reach twenty which meets the requirements of engineering plans. |
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| Keywords: | decay rates time lags heat conduction building construction field |
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