# [1]张源,杜垲,何嘉鹏,等.建筑构件热阻计算方法[J].东南大学学报(自然科学版),2012,42(1):77-82.[doi:10.3969/j.issn.1001-0505.2012.01.015] 　Zhang Yuan,Du Kai,He Jiapeng,et al.Calculation methods on thermal resistance of building components[J].Journal of Southeast University (Natural Science Edition),2012,42(1):77-82.[doi:10.3969/j.issn.1001-0505.2012.01.015] 点击复制 建筑构件热阻计算方法() 分享到： var jiathis_config = { data_track_clickback: true };

42

2012年第1期

77-82

2012-01-18

## 文章信息/Info

Title:
Calculation methods on thermal resistance of building components

(1东南大学能源与环境学院,南京 210096)
(2南京工业大学城市建设与安全工程学院,南京 210009)
Author(s):
(1School of Energy and Environment, Southeast University, Nanjing 210096, China)
(2College of Urban Construction and Safety Engineering, Nanjing University of Technology, Nanjing 210009, China)

Keywords:

TU522.01
DOI:
10.3969/j.issn.1001-0505.2012.01.015

Abstract:
Considering the simple approximation of a theoretical calculation method on the average thermal resistance of hollow block, the uncertainty of the results calculated by this method was analyzed. A novel calculation method based on CFD(computational fluid dynamics) numerical simulation with finite volume method is proposed to evaluate the thermal characteristics of building components. The accuracy comparison between the CFD numerical method and the theoretical method was conducted by using heat flow meter method and hotbox method to test the thermal resistance of a concrete hollow block with inserting thermal insulation layer. Through the analysis of theoretical method, CFD numerical method and experimental validation, it is concluded that the thermal characteristics of building components from theoretical calculation method quoted in the paper are of uncertainty, the result errors of which are 36. 6% and 33. 8% in respect to the results of heat flow meter method and hotbox method. The result errors of CFD numerical simulation method are 0. 3% and 2. 4% respectively; the accuracy of the numerical simulation method is satisfactory, meanwhile, the method has advantages of wide application fields and visualized result presentation.

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