In this study

a composite phase change heat storage material was prepared based on paraffin wax and foamed metal copper

and a visual heat storage experimental device was designed and developed. The enhanced heat transfer mechanism of the foamed metal copper filling rate in the paraffin heat storage process was analyzed. The experimental results showed that when the filling rate of metallic copper increased from 0 to 2.13%

the melting time of the composite phase change heat storage material was shortened from 901 s to 782 s (12.21%). When the filling rate of the foamed metal copper was 2.13%

the temperature gradient inside the paraffin wax was the lowest (22.52 K). In addition

with the increase in the foamed metal copper filling rate

the heat storage capacity of the composite phase change heat storage material was reduced from 15 932 J to 13 296 J (16.55%)

and the heat storage rate first decreased and then increased (18.41 J/s

18.33 J/s

18.64 J/s

and 19.13 J/s). When the filling rate of foamed metal copper was 0.99%

the heat storage capacity of paraffin wax in the heat storage device was 14 539 J

and the heat storage rate was 18.52 J/s

which indicated improved heat storage performance of the composite phase change heat storage material.