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http://dx.doi.org/10.3795/KSME-B.2006.30.8.772

Experimental Study on Manufacturing of Insulation Vacuum Glazing and Measurement of the Thermal Conductance  

Lee Bo-Hwa (한국항공우주연구원 항공추진그룹)
Yoon Il-Seob (한국과학기술원 기계공학과)
Kwak Ho-Sang (금오공과대학교 기계공학부)
Song Tae-Ho (한국과학기술원 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.30, no.8, 2006 , pp. 772-779 More about this Journal
Abstract
Window is a critical component in the design of energy-efficient buildings. To minimize the heat loss, insulation performance of the glazing has to be improved. Manufacturing of vacuum glazing has been motivated by the possibility of making windows of very good thermal insulation properties for such applications. It is made by maintaining vacuum in the gap between two glass panes. Pillars are placed between them to withstand the atmospheric pressure. Edge covers are applied to reduce conduction through the edge. Accurate measurements have been made of the radiative heat transfer, the pillar conduction and the gas conduction using a guarded hot plate apparatus. Vacuum glazing is found to have low thermal conductance roughly below $1W/m^2K$. Among the heat transfer modes of residual gas conduction, conduction through support pillar and the radiative heat transfer between the glass panes, the last one is the most dominant to the overall thermal conductance. Vacuum glazing using very low emittance AI-coated glass has an overall thermal conductance of about $0.7W/m^2K$.
Keywords
Insulation; Vacuum Glazing; Guarded Hot-plate Apparatus; Low Emittance Coated Glass; Thermal Conductance;
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  • Reference
1 Geotti-Bianchini, F. and Lohrengel, J., 1989, 'Measured Angular Distribution of the Emissivity and Calculated Radiation Heat Transfer of Architectural Coated Flat Glass,' Part 1, Theory, Glastechnische Berichte, Vol. 62, pp. 312-319
2 Geotti-Bianchini, F. and Lohrengel, J., 1989, 'Measured Angular Distribution of the Emissivity and Calculated Radiation Heat Transfer of Architectural Coated Flat Glass,' Part 2, Results and Discussion, Glastechnische Berichte, Vol. 62, pp. 351-357
3 Pilkington K glass information sheet, Pilkington Glass Limited, England, 1989
4 Zhang, Q. -C., Simko, T. M., Dey, C. J., Collins, R. E. and Turner, G M., 1997 'The Measurement and Calculation of Radiative Heat Transfer Between Uncoated and Doped Tin Oxide Coated Glass Surfaces,' Int. J. Heat Transfer, pp. 61-71   DOI   ScienceOn
5 Corrucini, R. J., 1957, 'Gaseous Heat Conduction at Low Pressures and Temperatures,' Vacuum, Vol. 7, 8, pp.19-29   DOI   ScienceOn
6 Collins, R. E., Davis, C. A., Dey, C. J., Robinson, S J., Tang, J. -Z. and Turner, G M., 1993, 'Measurement of Local Heat Flow in Flat Evacuated Glazing,' Heat Mass Transfer, Vol. 36, No. 10, pp. 2553-2563   DOI   ScienceOn
7 Arasteh, D., Selkowitz, S. and Wolfe, J.R., 1989, 'The Design and Testing of a Highly Insulating Glazing System for Use with Conventional Window Systems,' Journal of Solar Energy Engineering, Vol. 111, pp. 44-53   DOI
8 Benson, D. K., Tracy, C. E., Susemihl, J., Potter, T. and Soule, D. E., 1987, 'Vacuum Window Glazings for Energy-efficient Buildings,' International Report PR3159, Solar Energy Research Institute, Golden, CO, pp 887-904
9 Robinson, S. J. and Collins., R. E., 1989, 'Evacuated Windows-theory and Practice,' ISES Solar World Congress, International Solar Energy Society, Kobe, Japan, pp. 887-904
10 Determining the Steady State Thermal Transmittance of Fenestration Systems, ASTM Standard E. 1423, 1991
11 Collins, R. E., Turner, G. M., Fischer-Cripps, A. C., Tang, J. -Z., Simko, T. M., Dey, C. J., Clugston, D. A., Zhang, Q. -C. and Garrison, J. D., 1995, 'Vacuum Glazing-A New Component for Insulating Windows,' Building and Environment, Vol. 30, pp. 459-492   DOI   ScienceOn
12 Wilson, C. F., Simko, T. M. and Collins, R. E., 1998, 'Heat Conduction Through the Support Pillars in Vacuum Glazing,' Solar Energy, Vol. 63, pp. 393-406   DOI   ScienceOn