A New Type Phase Change Energy-Saving Device for Building Field

Abstract:

The heat transfer enhancement in a latent heat energy storage device through embedment of copper foam (CF) is reported. The CF had a 96% porosity and the phase change material (PCM) was 25# paraffin. The CF and PCM were contained in a cuboid sample. A prototype test room was designed to numerically investigate the performance of the device. The melting and freezing process of the PCM and the day-night temperature of the room were observed. The results show that the tested totally melting time of the PCM is 8.72 hours during the daytime while the freezing time is 8.19 hours at night, and the phase change process could accomplish within 8-9 hours. The maximum temperature difference of the room is reduced 8.3°C. The room comfort could be significantly enhanced under the premise of less air conditioning energy consumption by applying the device.

• Periodical: Advanced Materials Research (Volumes 608-609)
• Pages: 1147-1150
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.608-609.1147
• Online since: December 2012
• Authors: Yong Qi Xie*, Peng Tao Chi, Jian Zu Yu, Jun Song
• Keywords: Building Field, Copper Foam, Energy Saving, Heat Transfer, Phase Change Materials (PCM)

References

[1] F. Ye, J. L. Qu, J.Y. Zhong. The Chinese J. of Proc. Eng., Vol.10(6)(2010), p.1231, In Chinese

[2] L. J. Wang, D. Sun. Mater. Rev., Vol.24(2010), p.275

[3] L. J. Zhang, Y. D. Xu. Low Temperature Architecture Technology, Vol.5(2008), p.137.

[4] L. Wang, J. Xiong. The World of Building Materials, Vol.31(3)(2010), p.4

[5] F. Jun, Y. C. Hamada, Y. Morozumi. Int. J. Heat and Mass Transfer, Vol.45(2002), p.4781

[6] T. Zhang, J. Z. Yu. J. Beijing Univ. of Aero. and Astro., Vol.33(9)(2007), p.1021, In Chinese

[7] R. Velraj, R.V. Seeniraj, B. Hafner. Solar Energy, Vol.65(1999), p.171

[8] K. Shankar, Y. M. Jayathi, V.G. Suresh. J. Heat Transfer, Vol.127(2005), p.995

[9] H. J. Wang, G. Xie, J. M. Cheng. Energy conservation technology, Vol.29(3)( 2011), p.214