▎ 摘　　要

NOVELTY - The utility model claims a photo-thermal graphene circulating crude oil heating system, comprising a pre-heating tank of crude oil sequentially a heat storage tank, an electric heating tank, the heat exchange medium in the preheating tank enters into the solar heat collector through the first pipeline, the solar heat collector conveys the heat exchange medium to the preheating tank through the second pipeline, the second pipeline is further connected with a third pipeline connected with the heat storage tank. The utility model when the solar temperature reaches the set temperature, the solar energy to the valve between the preheating turn on, solar heat exchange medium starts to circulate, the solar heat exchange medium enters the preheating tank, the heat is transmitted to the raw oil in the tank; the solar energy surplus heat into the energy storage tank for storage, the temperature in the energy storage tank reaches the phase change temperature, phase change material starts to store energy; when the solar illumination is weak, using electricity valley period, turn on heating, controlling the temperature of the electric heating tank by the system.