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[1] Peng Changhai, Wu Zhishen, Chen Zhenqian, et al. Decay rates and time lags of heat conductionin building construction under field conditions [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 249-253. [doi:10.3969/j.issn.1003-7985.2010.02.023]
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Decay rates and time lags of heat conductionin building construction under field conditions()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
26
Issue:
2010 2
Page:
249-253
Research Field:
Architecture
Publishing date:
2010-06-30

Info

Title:
Decay rates and time lags of heat conductionin building construction under field conditions
Author(s):
Peng Changhai1 2 Wu Zhishen1 Chen Zhenqian1 Li Min1
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
Keywords:
decay rates time lags heat conduction building construction field
PACS:
TU111
DOI:
10.3969/j.issn.1003-7985.2010.02.023
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.

References:

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Memo

Memo:
Biography: Peng Changhai(1970—), male, doctor, associate professor, pengchanghai1@yahoo.com.cn.
Foundation items: The Advance Research Projects of Southeast University for 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).
Citation: Peng Changhai, Wu Zhishen, Chen Zhenqian, et al.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.
Last Update: 2010-06-20