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    초록·키워드

    An experimental investigation was undertaken to characterize the effect of inlet air humidity and inlet air temperature on the frost formation on a horizontal circular cylinder in cross flow. Experimental conditions were limited to air temperature from 5 to 15℃, air humidity ratio from 0.003 to 0.0055㎏/㎏, Reynolds number 17000, cylinder surface temperature -15℃. Frost thickness, frost surface temperature and cylinder inner and outer temperature were measured at front and rear positions of the cylinder. Frost mass was measured from front and rear area corresponding to θ=±30° after 3 hours. Average density and effective thermal conductivity of frost layer were calculated from measured data.

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      UCI(KEPA) : I410-ECN-0101-2009-553-015413897