This report deals with an experimental and numerical analysis carried out to investigate the discharge characteristics of latent heat storage columns, by using cross-linked cylindrical plastic particles as a phase-change type of heat storage material and ethylene glycol as a heat transfer medium In the experiment, the transient response of the outlet temperature of heat transfer medium was measured under conditions of varying the initial temperature in the column, the inlet temperature of heat transfer medium, the mass flow rate of heat transfer medium, and the mass of heat storage material packed in the column. In the numerical analysis, the transient temperature distribution in the column was calculated by using the empirical formula for estimating the heat transfer coefficient for a fixed bed, which was recommended in the authors＇ previous report. The experimental results were found to be in fair agreement with numerical results.