Simulation on Heat Storage and Release Performance of Fatty Acid Phase Change Floor Used for Ground with Heating System

【Objective】 In order to provide theoretical bases for the development and application of a new kind phase change energy storage floor used in ground with heating system, the thermal performance of phase change energy storage floor using fatty acid eutectic mixture as phase change material was investigated by a heat transfer mathematic model of ground with heating system in this study.【Method】 Differential scanning calorimetry(DSC)and step cooling curves were used to analyze the thermal properties of eutectic mixtures of fatty acids. The chemical properties and thermal cycling stability was tested by DSC and Fourier transform infrared(FTIR). The applicability of fatty acid eutectic mixture to the ground of ground with heating system was confirmed, and the fatty acid eutectic mixture was selected as the phase change material for the phase change energy storage floor. The energy saving performance and heating effect of phase change energy storage floor was analyzed by a heat transfer mathematic model of electric