Gravity-assisted heat pipe ground cooling source cold storage system and chiller set

A chiller set for a cold storage system,

• wherein the cold storage system comprises a gravity-assisted heat pipe, a cold storage pool, a heat exchanging and cold condensing device and a heat exchanger pipe;
• wherein an inlet and an outlet of the cold storage pool are parallelly connected to the cold water pipes of the chiller set, and are connected or disconnected via control valves;
• the gravity-assisted heat pipe is a separating heat pipe, an evaporating segment of the gravity-assisted heat pip is arranged in the cold storage pool and a condensing segment is arranged in the heat exchanging and cold condensing device;
• the heat exchanger pipe is buried underground, and comprises a flow inlet pipe and a flow return pipe, an upper end of the flow inlet pipe and an upper end of the flow return pipe are connected with an inlet and an outlet of the heat exchanging and cold condensing device via heat insulating pipes to form a circulation;
• an outer wall of the flow inlet pipe is connected with an outer wall of the flow return pipe, the flow inlet pipe is mutually parallel with the flow return pipe, the flow inlet pipe comprises four pipes having circular cross sections, and a cross section of the flow return pipe is formed by a first arc, a second arc, a third arc and a fourth arc connected sequentially to one another, wherein, the second arc and the fourth arc are S-shaped arcs, the first arc has a radius larger than that of the third arc, centers of circles of the first arc and the third arc are located at a cross section of the flow return pipe, and the flow inlet pipe is arranged around the third arc;
• and
• the cold storage pool is parallel-connected to the chiller set.