▎ 摘　　要

NOVELTY - The device has a box body provided with a heat storage tank and a condenser. An outer layer of the heat storage tank is provided with a heat insulating material and a transparent insulated heat preservation layer, where the heat preservation layer is provided with multiple different diameters of a circular heat inlet and outlet. An end of a soft tubular connector is connected with a heat supply pipe wall. The other end of the soft tubular connector is connected with the circular heat inlet. An inner surface of a plane mirror and a disk concave condenser are fixed on a device cover through a foldable bracket when the plane mirror and the disk concave condenser rotates a proper position. The condenser collects solar heat energy. USE - Graphene material based middle-low temperature heat storage device. ADVANTAGE - The device is convenient to assemble, and has high production efficiency and wide application prospect, and adopts modularized design. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a graphene material based middle-low temperature heat storage device.