The Influence of Wall Orientation and Exterior Surface Solar Absorptivity on Time Lag and Decrement Factor

Yun Xia Zhang; San Xiang Sun; Tian Peng Wang

doi:10.4028/www.scientific.net/AMR.113-116.161

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 113-116The Influence of Wall Orientation and Exterior...

The Influence of Wall Orientation and Exterior Surface Solar Absorptivity on Time Lag and Decrement Factor

Abstract:

In this work, an analysis and numerical study have been carried out in order to determine how time lag and decrement factor are affected by wall orientation and exterior surface solar absorptivity for specific climatic conditions in Budongquan station of Qinghai-Tibet railway. The model employing a dynamic thermal-network simulates heat transfer through the wall according to the measured data. The time lag and decrement factor with different wall orientation and surface absorptivity are investigated based on the hourly heat flow density from outside to inside of building wall. The results of present study are useful for reducing the energy load demands by predicting the thermal reaction of building.

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Periodical:

Advanced Materials Research (Volumes 113-116)

Pages:

161-164

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.113-116.161

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Online since:

June 2010

Authors:

Yun Xia Zhang, San Xiang Sun, Tian Peng Wang

Keywords:

Decrement Factor, Orientation, Surface Absorptivity, Time Lag

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