Large-scale ring type pulsating heat pipe

Abstract

The invention belongs to the field of passive heat transfer, and relates to a large-scale ring type pulsating heat pipe. The pulsating heat pipe comprises an inner pipe 1, an outer pipe 2, a metal wire 3, a copper ring 4, a sealing ring 5, a gas-liquid channel 6 and a U-shaped elbow channel 7, wherein the inner tube 1 and the outer tube 2 are coaxially arranged, the metal wire 3 with the diametersmaller than the thickness of an annular gap is penetrated at the annular gap formed between the inner tube 1 and the outer tube 2, the metal wire 3, the inner tube 1 and the outer tube 2 are tightlyattached through adopting a mechanical method, the copper ring 4 and the sealing ring 5 are sequentially sleeve at the two sides of the inner tube 1, and then the two sides are welded and sealed intoa whole; and an hole is formed at one side of the copper ring 4 to weld a liquid filling pipe. The large-scale ring type pulsating heat pipe has the advantages of being high in space utilization rate,large in heat flow density, good in heat transfer efficiency and heat transfer limit, stable in operation, flexible in installation and arrangement, excellent in anti-gravity operation characteristics, easy in realizing large scale of the single pulsating heat pipe and the centralized arrangement of multiple heat pipes, compact in structure, small in size, light in weight and low in cost, and issuitable for industrial mass production.

Description

technical field [0001] The invention relates to a ring-type pulsating heat pipe that can be used in nuclear energy, solar energy and geothermal utilization, waste heat recovery, aerospace and high-power electronic equipment cooling and other occasions involving large-scale, high heat flow and high-power energy exchange, and belongs to the technical field of passive heat transfer. Background technique [0002] With the advancement of science and technology, thermal design technology for heat dissipation in high heat flux environments has become an important factor limiting the development of science and technology. With the advent of the "big data" era, data centers need to concentrate more electronic devices in a limited space to process increasing information data, and the heat flux density generated by the heat generation also increases sharply. In addition, the heat flux density required by nuclear reactor cooling technology and laser cooling technology in the near future...

AI Technical Summary

Problems solved by technology

The thermal stress caused by the uneven temperature distribution between the channels of the pulsating heat pipe makes it difficult to operate stably for a long time, and it is also difficult to realize large-scale industrial production

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