Natural convection heat transfer in the airlayer of insulating glass
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Abstract:
The numerical simulation with FLUENT software is addressed for the natural convection heat transfer under the conditions of different airlayer thickness with 6 mm,9 mm,12 mm,14 mm and 16 mm. The heat transfer rate is compared with that by heat conduction. Gas types, Rayleigh number (Ra),the relative thickness of airlayer,δ/H,and the surface (ΔT) are main factors for natural convection heat transfer. The natural convection heat transfer could be approximately regarded as the pure heat conduction in the conditions of above airlayer thickness. The heat transfer coefficient of the insulating glass with simulation is approximate to that with empirical calculation.
