公开(公告)号：US11889663B1

公开(公告)日：2024-01-30

申请号：US18368026

申请日：2023-09-14

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xu Liu ,  Ao Li ,  Jiangfeng Yao ,  Zilong Deng ,  Chengbin Zhang

IPC: H05K7/20

CPC classification number: H05K7/20818 ,  H05K7/203 ,  H05K7/20236 ,  H05K7/20272 ,  H05K7/20327 ,  H05K7/20781

Abstract: An immersion dual-cycle multi-mode liquid cooling regulation system and method for a data center comprises data center cabinets, a microchannel condensation heat exchanger, a plate heat exchanger, waste heat recovery devices, a cooling water storage tank, a fluorinated liquid storage tank, a liquid pump, a fluorinated liquid, pipelines, and pipeline valves. The system switches between single-phase and two-phase circulation loops according to the working power consumption of a server and the thermophysical property of a cooling working medium, and realizes flexible adjustment and control according to the cooling demand of the cabinet, the load magnitude and the working environment, thus avoiding the waste of resources caused by different loads in the data center; and cooling water flows through the waste heat recovery devices to recover heat, to reduce the electricity consumption of the system and greatly improve the utilization efficiency of cooling capacity.

公开(公告)号：US11950393B2

公开(公告)日：2024-04-02

申请号：US17620628

申请日：2021-06-25

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xu Liu ,  Junming Du ,  Haitao Jiang ,  Chengbin Zhang ,  Dongping Yin

IPC: H05K7/20

CPC classification number: H05K7/20327 ,  H05K7/20318 ,  H05K7/20818 ,  H05K7/20836

Abstract: The invention provides a two-phase flow active and passive multi-level data center cabinet cooling device and method, wherein the system includes a cabinet cooling device, a condensate system, a waste heat recovery device, a liquid reservoir, a liquid pump, a gas chamber, a fluid working medium, and a corresponding pipeline. The system comprise a closed loop, the loop is filled with nitrogen to maintain a low pressure state, and the pipeline fluid is driven by the liquid pump to flow; the gas chamber maintains a relatively stable air pressure in the two-phase flow loop; the liquid reservoir is connected with the gas chamber, providing an enough gas space to make a phase change occur more easily; the cabinet cooling device can be switched between an active mode and a passive mode to minimize PUE under good heat dissipation capability.