A dual-circuit cryogenic loop heat pipe working in the temperature range of 160k to 220k

Abstract

The invention discloses a two-loop cryogenic loop heat pipe adapting to a 160K-220K work temperature zone. Temperature-zone-crossing starting and operating functions from a normal temperature zone to a 160K low temperature zone can be achieved, and therefore the technical problems that an existing conventional loop heat pipe fails to start in the normal temperature zone, reservoirs and the filling quantity of work mediums difficultly adapt to crossing of a large temperature zone are solved. Two sets of loop heat pipes are adopted to solve the heat transfer problem of the 160K - 220K temperature zone, wherein evaporators and condensers of the two sets of loop heat pipes are thermally coupled together correspondingly; one set of loop heat pipe uses an ethane work medium, and the other set of loop heat pipe uses a propylene work medium; the evaporators of the two sets of loop heat pipes are thermally coupled together through a heat-collecting seat and are attached to a heat source to absorb heat, and the condensers of the two sets of loop heat pipes are thermally coupled together and attached to a heat sink to release heat.

Description

technical field [0001] The invention relates to a loop heat pipe, in particular to a double-circuit deep-cooling loop heat pipe, which belongs to the technical field of heat dissipation of electronic equipment in low-temperature regions. Background technique [0002] The loop heat pipe is a high-efficiency two-phase heat transfer device, which has the characteristics of high heat transfer performance, long-distance heat transfer, excellent temperature control characteristics, arbitrary bending of the pipeline, and convenient installation. With comparable advantages, the loop heat pipe has very broad application prospects in many fields such as aviation, aerospace, and ground electronic equipment heat dissipation. [0003] Such as figure 1 As shown, the loop heat pipe mainly includes: an evaporator 1, a condenser 2, a liquid receiver 3, a vapor pipeline 4 and a liquid pipeline 5. Evaporation, absorbing the heat outside the evaporator 1, the generated steam flows from the st...

AI Technical Summary

Problems solved by technology

If the loop heat pipe uses propylene as the working medium, although it can be started normally in the normal temperature zone, the heat transfer capacity of the loop heat pipe is too poor in the temperature zone below 220K, and cannot meet the heat transfer performance requirements of the loop heat pipe in the temperature zone of 160K to 220K

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