Patent ID: 11950393
Assignee: SOUTHEAST UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. The heat dissipation method for the two-phase flow active and passive multi-level data center cabinet cooling device according to claim 7, wherein when the CPU junction temperature monitored by the first CPU temperature sensor (27-1) and the second CPU temperature sensor (27-2) is lower than a CPU high temperature threshold, a cooling medium inlet temperature control valve (19), a cooling medium outlet temperature control valve (20) and a gas valve (21) are all closed, and the rack-level loop thermosiphon (11) performs passive two-phase flow cooling;
when the CPU junction temperature monitored by the first CPU temperature sensor (27-1) or the second CPU temperature sensor (27-2) is higher than the CPU high temperature threshold, the sensor that exceeds the threshold temperature sends a signal, the cooling medium inlet temperature control valve (19) and the cooling medium outlet temperature control valve (20) are opened, the gas valve (21) is kept closed, the cooling medium in the liquid reservoir (6) at a high position and the cooling medium inlet flows to the rack-level loop thermosiphon (11), and to the liquid reservoir (7) at a low position and the cooling medium outlet through a pipeline, and the rack-level loop thermosiphon (11) begins to perform active two-phase flow cooling;
when the CPU junction temperature monitored by the first CPU temperature sensor (27-1) and the second CPU temperature sensor (27-2) is lower than a CPU low load threshold temperature, and the cooling medium inlet temperature control valve (19) and the cooling medium outlet temperature control valve (20) are opened, the first CPU temperature sensor (27-1) and the second CPU temperature sensor (27-2) send a signal, the cooling medium inlet temperature control valve (19) is closed, the gas valve (21) is opened, the cooling medium in the top pipeline of the rack-level loop thermosiphon (11) flows to the low-position liquid reservoir (7) at the cooling medium outlet, then the cooling medium outlet temperature control valve (20) and the gas valve (21) are closed, and the rack-level loop thermosiphon (11) returns to the passive two-phase flow cooling mode.