Paraffin as a concrete phase change material
Keywords
Paraffin, phase change materials, concrete, latent heat, building materials
Paraffin, colorless to white translucent block, pure paraffin is white, paraffin containing impurities is yellow, tasteless and odorless, with a greasy feeling. The chemical properties are stable, and the color will turn yellow under ultraviolet radiation. It can be burned and decomposed, and it is stable at room temperature.
As a latent heat energy storage material, paraffin wax has the advantages of large latent heat of phase change, small volume change during solid-liquid phase change, good thermal stability, no supercooling phenomenon, and low price.
Latent heat is the ability of a material to absorb or release thermal energy without increasing its temperature when melting or freezing.
A phase change material is a material in which the three phases (solid, liquid, and gas) of an object can be transformed into each other under certain conditions. Phase change materials, especially solid-liquid phase change materials, are widely used in building energy-saving and thermal insulation due to their stability and large latent heat.
Among building materials, phase change paraffin is mainly used in phase change energy storage gypsum board, phase change energy storage concrete, building thermal insulation materials, phase change energy storage mortar, phase change heat storage floor and ceiling, etc.
