Two-phase liquid cooling system based on nanoparticle deposition boiling enhancement mechanism

By adopting the boiling enhancement mechanism of nanoparticle deposition in the data center cooling system, the problems of low efficiency and high cost of traditional cooling systems in high power and high heat flow dissipation are solved, achieving more efficient cooling effects and lower improvement costs.

CN119677034AActive Publication Date: 2025-03-21TONGJI UNIV
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Patent Information

Application Number
CN202411688550.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-03-21
Estimated Expiration
2044-11-25

AI Technical Summary

Technical Problem

When existing data center cooling systems handle chip heat dissipation with high power and high heat flow, traditional air-cooling systems lack heat exchange coefficients, and the two-phase immersion cooling systems have challenges in angle sensitivity and liquid phase supplementation, resulting in low cooling efficiency and high cost.

Method used

Using a boiling enhancement mechanism based on nanoparticle deposition, the high thermal conductivity of the bubble nucleation point and thermal surface is enhanced and the boiling efficiency of the pool is improved. At the same time, the nanoparticle deposition strength is controlled through different thermally conductive materials, selectively strengthening the boiling surface, and improving the efficiency of the cooling system.

Benefits of technology

It significantly improves boiling capacity and cooling efficiency, reduces improvement costs, and effectively enhances the energy utilization efficiency and cooling capacity of the cooling system without changing the server layout.

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Abstract

The invention relates to a two-phase liquid cooling system based on a nanoparticle deposition boiling enhancement mechanism. The two-phase liquid cooling system comprises an external cooling unit, an immersion cooling cabinet, a cooling water distribution unit, a nanofluid distribution unit and a coolant distribution unit, the immersion cooling cabinet, the nanofluid distribution unit and the coolant distribution unit are all arranged in the cabinet area; the data center machine room is formed by connecting multiple cabinets in parallel. Compared with the prior art, through a simple and low-cost nano-particle self-assembly mode, the boiling capacity is improved, and meanwhile the improvement cost is reduced; a non-homogeneous wettability surface is prepared according to a self boiling mechanism, so that the energy utilization efficiency of the two-phase liquid cooling system is effectively improved; the deposition strength of the nanoparticles is controlled through the difference of the heat conduction materials, so that the boiling surface is selectively enhanced, the pool boiling effect is effectively improved, and the efficiency of a cooling system is improved.
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