液相流動床による伝熱管周りへの着氷抑制

抄録

An experimental study was performed on ice formation around a brine-cooled tube embedded horizontally in a liquid-fluidized bed. Tested particles for fluidization were total 4 kinds of glass and ceramics having a diameter of 1.87 to 2.50mm. Experimental data of ice layer thickness for single-phase flow (without particles) agreed with an existing correlation within ± 15%.When particles were charged in the test section and fluidized, the ice layer thickness became remarkably thinner than that for the single-phase flow. Applying the heat transfer coefficient obtained for the liquid-fluidized bed without ice formation, analytically calculated ice layer thickness agreed with the experimental data within ± 0.5mm.