Energy-collection type domestic solar water heater

The utility model discloses an energy-collection type domestic solar water heater which comprises a water tank. Superconductive heat pipes are arranged perpendicular to the longitudinal axis of the water tank at intervals. A heat preservation layer is arranged on the inner wall of the water tank. A water inlet pipe allowing cold water to flow into and a water outlet pipe allowing hot water to flow out are arranged on the water tank. A copper coil pipe is arranged between the water inlet pipe and the water outlet pipe. The opening end of each superconductive heat pipe penetrates into the water tank. The water tank is filled with a phase change heat storage material capable of absorbing and storing heat transferred through the superconductive heat pipes. The copper coil pipe is coated with the phase change heat storage material and receives heat released by the phase change heat storage material. By the adoption of the characteristic that the heat storage capacity of the phase change heat storage material is fi