Abstract
A surface-contact hollow cubic model is developed for coupled heat transfer of gas and solid in xonotlite-type calcium silicate insulation material based on its microstructure features. Through one-dimensional heat conduction analysis in the unit cell structure, a conductive thermal conductivity expression is obtained. A transient hot strip method is used to measure the thermal conductivity of xonotlite from 300 to 970K and from 0.045Pa to atmospheric pressure. The spectral specific extinction coefficients are derived from transmission measurements on a thin xonotlite sample performed with a Fourier transform infrared (FTIR) spectrometer. The results show that the specific spectral extinction coefficients are larger than 7m2·kg−1 over the whole measured spectra, and the diffusion approximation equation is a reasonable description of radiative heat transfer in xonotlite insulation material. The effective thermal conductivity model matches extremely well with the experimental data, which is important for the thermal design and thermal analysis of xonotlite insulation material.
Similar content being viewed by others
References
Wieslawa N.W. (1999). Cement Concrete Res 29: 1759
Ni W., Cao Z.Y. and Shu X.L. (1996). China Petrol. Mach. 24: 495 [in Chinese]
Li M.Q., Chen F.Y., Xia S.Q., Li J.H. and Liang H.X. (2000). J. Chinese Ceram. Soc. 28: 401 [in Chinese]
Zheng Q.J. and Wang W. (2000). Brit. Ceram. Trans. 99: 187
Hrubesh L.W. and Pekala R.W. (1994). J. Mater. Res. 9: 731
Burns P.J. and Tien C.L. (1979). Int. J. Heat Mass Transfer 22: 929
Russell H.W. (1935). J. Am. Ceram. Soc. 18: 1
Kunii D. and Smith J.M. (1960). AICHE J. 6: 71
Zehner P. and Schlunder E.U. (1970). Chem. Ing. Tech. 42: 933
Nozad S., Carbonell R.G. and Whitaker S. (1985). Chem. Eng. Sci. 40: 843
Verma L.S., Shrotriya A.K., Singh R. and Chaudhary D.R. (1991). J. Phys. D: Appl. Phys. 24: 1729
Hsu C.T., Cheng P. and Wong K.W. (1995). J. Heat Transfer 177: 264
Yu F., Wei G.S., Zhang X.X. and Chen K. (2006). Int. J. Thermophys. 27: 293
Chen K., Yu F., Zhang X.X. and Wei G.S. (2004). J. Univ. Sci. Technol. Beijing 26: 650
Siegel R. and Howell J.R. (2002). Thermal radiation heat transfer. Taylor & Francis, London
Zhang X.X., Wei G.S. and Yu F. (2005). J. Therm. Sci. 14: 281
Gustafsson S.E., Karawack E. and Khan M.N. (1979). J. Phys. D: Appl. Phys. 12: 1411
Lu X., Ardunini-Schuster M.C., Kuhn J., Nilsson O., Fricke J. and Pekala R.W. (1992). Science 221: 971
Lee O.J., Lee K.H., Yim T.J., Kim S.Y. and Yoo K.P. (2002). J. Non-Cryst. Solids 298: 287
Touloukian Y.S., Liley P.E. and Saxena S.C. (1970). Thermal conductivity: nonmetallic liquids and gases. IFI/Plenum, New York
Touloukian Y.S., Liley P.E. and Saxena S.C. (1970). Thermal Conductivity: Nonmetallic Solids. IFI/Plenum, New York
Ni W., Cao Z.Y. and Shu X.L. (1996). J. Univ. Sci. Technol. Beijing 18: 495 [in Chinese]
Mao Z.J. and Sheng J.X. (1997). Bull. Chinese Ceram. Soc. 1: 50 [in Chinese]
Fang C.L. and Song D.S. (2000). Non-Metallic Mines 23: 28 [in Chinese]
Wang Z.Y., Huang Y.M., Wu M.M. and Xue G.Q. (1997). Naihuo Cailiao 31: 134 [in Chinese]
Author information
Authors and Affiliations
Corresponding author
Additional information
Paper presented at the Seventeenth European Conference on Thermophysical Properties, September 5–8, 2005, Bratislava, Slovak Republic.
Rights and permissions
About this article
Cite this article
Wei, G., Zhang, X. & Yu, F. Thermal Conductivity of Xonotlite Insulation Material. Int J Thermophys 28, 1718–1729 (2007). https://doi.org/10.1007/s10765-007-0214-y
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10765-007-0214-y