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Advances in Materials Science and Engineering
Volume 2015 (2015), Article ID 981854, 6 pages
Research Article

Experimental Study on the Thermal Response of PCM Energy Storage Block with Hole Ventilation

1College of Urban Construction & Safety Engineering, Nanjing Tech University, Nanjing 210009, China
2School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China

Received 26 November 2014; Accepted 11 January 2015

Academic Editor: João M. P. Q. Delgado

Copyright © 2015 Sunqi Zhuang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Under the condition of Nanjing, the effect by the velocity variation of night ventilation on the thermal response of the south wall built by phase-change materials (PCMs) blocks with different configurations has been investigated and analyzed. It shows that the thermal performance when the PCM is placed nearby inner side in hollow block is better than that of the outer side. Meanwhile, the maximum amplitude of the temperature on the interior surface when the PCM is placed at the inner side is 58.3% higher than that of the outer side. The optimal flow velocity of both A and B is 2 m/s. Meanwhile, the minimum amplitudes of the temperature on the interior surface are 1.74°C and 3.72°C as well as the retardation coefficients are 8 h and 7 h. Compared to the structure configuration without ventilation, the heat flow was reduced 38.2% and 29.3%, respectively, and the equivalent heat resistance increased by 115.8% and 88.6%.