Study on Composite for Material Phase Change of Temperature from 19℃ to 26℃

The paper presents a research on preparing a kind of composite phase change material which is suitable for architectural interior and whose phase transition temperature(room temperature) is in an inter-val.This material can achieve the goals of reducing energy consumption and improving energy efficiency.Heating and cooling curves are tested to select the appropriate phase change material by complex formulation of three kinds of phase change material in different proportions.Latent heat of composite phase change mate-rial is estimated through theoretical calculation analysis by combining w ith experimental test.The results in-dicate that phase transformation temperature changes from 19℃ to 26℃ and latent heat is approximately 150kJ/kg.When 5.76kg PCM s is added to surface mortar,it could ensure temperature changes are1℃in the room of 14.85m2.The composite phase change material studied is characterized w ith suitable tempera-ture range and large latent heatwhich is hopefully applied in surface mortar.