Abstract
This paper deals with the transient heat storage characteristics of high-density polyethylene pellets used as a latent heat storage material by the condensed heat from the ethylene glycol vapor. The polyethylene pellets are fabricated by the shape-stabilization treatment in which the molten pellets maintain the same shape as the solidified ones. The polyethylene pellets packed in the cylindrical heat storage vessel are melted by the condensed heat from the flowing vapor. The effects of vapor temperature, flow rate and the amount of the pellets on the latent heat storage characteris-tics are investigated experimentally. Moreover, the vapor movement among the packed pellets is enhanced by using the partition plate in the pellets layer. The nondimensional correlation equations of the completion time of heat storage are defined in terms of various nondimensional parameters.
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