IJSTR

International Journal of Scientific & Technology Research

IJSTR@Facebook IJSTR@Twitter IJSTR@Linkedin
Home About Us Scope Editorial Board Blog/Latest News Contact Us
CALL FOR PAPERS
AUTHORS
DOWNLOADS
CONTACT
QR CODE
IJSTR-QR Code

IJSTR >> Volume 6 - Issue 11, November 2017 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Alternative Hybrid Core Material For Vacuum Insulation Panels (Silica-Fly Ash-Glass Fiber)

[Full Text]

 

AUTHOR(S)

Desire Emefa Awuye, Zhaofeng Chen, Binbin Li, Wang Xuejia

 

KEYWORDS

Core material, Fly ash, Fumed silica, Microstructure, Thermal conductivity, VIP

 

ABSTRACT

Vacuum insulation panels, one of the most promising insulation materials consisting of an evacuated core material, an air tight envelope and in special cases an absorbent known as getter. However, despite its outstanding properties, it faces some challenges such as relatively high cost and quite a short service life which can be attributed to the core material used. In this paper, Hybrid core materials (HCM) consisting of various percentages of fly ash, fumed silica and glass fiber were used as a core material for vacuum insulation panels, and the composition ratio vs thermal conductivity were investigated to ascertain the optimum composition ratio that showed the lowest thermal conductivity and best insulation properties. This was to produce VIPs at a relatively cheaper cost. The optimum ratio of the HCM that showed the best insulation properties including lower thermal conductivity is that of 65% fly ash (FA), 30% fumed silica (FS) and 5% glass fiber (GF). The HCM produced exhibited similar qualities as that of silica powder core VIPs. Even though produced at a relatively lower cost, the insulation properties were not compromised. Furthermore, the thermal conductivity of each of the VIPs from the HCMs prepared were measured after undergoing a temperature stress of 60 °C for 6 months.

 

REFERENCES

[1] Y. S, E. M, and S. Q, "Analysis of the Chinese Market for Building Energy Efficiency," U.S. Department of Energy, vol. PNNL-22761, p. 68, 2014.

[2] S. S. Alotaibi and S. B. Riffat, "Vacuum insulated panels for sustainable buildings: a review of research and applications," International Journal of Energy Research, vol. 38, pp. 1-19, 2014.

[3] C. Li, M. Saeed, N. Pan, Z. Chen, and T. Xu, "Fabrication and characterization of low-cost and green vacuum insulation panels with fumed silica/rice husk ash hybrid core material," Materials & Design, vol. 107, pp. 440-449, 2016.

[4] F. E. Boafo, Z. Chen, C. Li, B. Li, and T. Xu, "Structure of vacuum insulation panel in building system," Energy and Buildings, vol. 85, pp. 644-653, 2014.

[5] C. Peng and J. Yang, "Structure, Mechanism, and Application of Vacuum Insulation Panels in Chinese Buildings," Advances in Materials Science and Engineering, vol. 2016, pp. 1-12, 2016.

[6] R. Baetens, B. P. Jelle, J. V. Thue, M. Tenpierik, S. Grynning, S. Uvslokk, et al., "Vacuum insulation panels for building applications: A review and beyond," Energy and Buildings, vol. 42, pp. 147-172, 2010.

[7] B. Chang, L. Zhong, and M. Akinc, "Low cost composites for vacuum insulation core material," Vacuum, vol. 131, pp. 120-126, 2016.

[8] B. Axel and J. Par, "Literature Review of High Performance Thermal Insulation," Chalmers University of Technology, Gothenburg, Sweden2012.

[9] M. Alam, H. Singh, and M. C. Limbachiya, "Vacuum Insulation Panels (VIPs) for building construction industry – A review of the contemporary developments and future directions," Applied Energy, vol. 88, pp. 3592-3602, 2011.

[10] B. Yrieix, B. Morel, and E. Pons, "VIP service life assessment: Interactions between barrier laminates and core material, and significance of silica core ageing," Energy and Buildings, vol. 85, pp. 617-630, 2014.

[11] J. Fricke, U. Heinemann, and H. P. Ebert, "Vacuum insulation panels—From research to market," Vacuum, vol. 82, pp. 680-690, 2008.

[12] M. Davraz and H. C. Bayrakci, "Performance properties of vacuum insulation panels produced with various filling materials," Science and Engineering of Composite Materials, vol. 21, p. 521, 2014.

[13] R. Caps, "Monitoring Gas Pressure in Vacuum Insulation Panels," Technical University Delft, Hermann Beyrichen, Germany2005.

[14] M. Davraz, H. C. Bayrakci, and Y. Yusufoglu, "The Effect of Fiber, Opacifier Ratios and Compression Pressure on the Thermal Conductivity of Fumed Silica Based Vacuum Insulation Panels," Arabian Journal for Science and Engineering, vol. 41, pp. 4263-4272, 2016.

[15] R. Zhang, J. Feng, X. Cheng, L. Gong, Y. Li, and H. Zhang, "Porous thermal insulation materials derived from fly ash using a foaming and slip casting method," Energy and Buildings, vol. 81, pp. 262-267, 2014.

[16] Z. Yao, M. S. Xia, P. K. Sarker, and T. Chen, "A review of the alumina recovery from coal fly ash, with a focus in China," Fuel, vol. 120, pp. 74-85, 2014.

[17] Z. Yao, X. Ji, P. K. Sarker, J. Tang, L. Ge, M. S. Xia, et al., "A comprehensive review on the applications of coal fly ash," Earth-Science Reviews, vol. 141, pp. 105-121, 2015.

[18] H. Cho, D. Oh, and K. Kim, "A study on removal characteristics of heavy metals from aqueous solution by fly ash," Journal of Hazardous Materials, vol. 127, pp. 187-195, 2005.

[19] K. S. Manas, "Strength Characteristic Study of Fly ash Composite Material," Bachelor, Mining Engineering, National Institute of Technology, Rourkela, 2010-11.

[20] R. D. Ritesh, "Geo-Engineering Properties of fly ash," Bachelors, Civil Engineering, NationalInstitute of Technology, Rourkela, 2011.

[21] L. Sutter, "Class C and Class F Fly Ash: Comparisons, Applications, and Performance," Michigan Technological UniversityAssesed : 2017.06.12.

[22] A. Mahmood, "Development of Vacuum Insulation Panel with Low Cost Material " Doctor of Philosophy, Mechanical, Aerospace and Civil Engineering, Brunel University, London, 2015.

[23] R. Kunic, "Vacuum Insulation Panels (VIP) - An Assessment of the Impact of Accelerated Ageing on Service Life," Strojniski Vestnik-journal of Mechanical Engineering, vol. 58, pp. 598-606, 2012.