Abstract:

This study is designed to prepare, characterize, and determine the heat energy storage characteristics of silicaphum/polyethylene glycol(PEG) composite as a solid new phase exchange material. Composites are prepared by the method of emitting under the vacuum into PEG's insilikafume. In the mixed PEG silicafume it could be imprisoned by 30% without showing flow behavior. Produced composite phase exchange material (FDM) is characterized by using SEM and FT-IR analysis techniques. The heat energy storage characteristics of the composite FDM are determined by DSC analyses. DSC analysis results showed that the composite FDM’s erosion point and erosion entalpsis were 27.70 oC and 87.09J/g respectively. A number of conducted heating and cooling cycles have shown that the composite FDMs are chemically stable and maintain significant levels of energy storage properties. TG analysis results showed that the thermal stability of the PEG absorbed into silicone is high. The thermal conductivity of composite FDMs is increased by adding carbon nano pipe (CNTs) in different proportions. The effect of the compound FDM of the CNTs supplement on the heat energy storage and release periods has also been studied.

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