The invention discloses a
data center negative pressure two-phase liquid cooling
distribution method and device, and relates to the technical field of
data center liquid cooling. A
server cold plate, an outdoor closed
cooling tower and a
data center two-phase cooling distribution unit CDU are connected through a closed circulating pipeline, so that a liquid cooling working medium is conveyed to the
server cold plate through a liquid separator at an outlet of the CDU, absorbs heat of a
server in a
cold plate flow channel and is completely gasified, and the gasified cooling working medium is driven by a
circulating pump through a heat insulation pneumatic pipeline to be conveyed to the server cold plate. A gaseous cooling working medium enters a primary side composite
gas phase pipeline and is directly conveyed to a condensation section of a primary side outdoor closed type
cooling tower, the condensation section adopts a finned tube bundle structure, the gaseous cooling working medium exchanges heat with air / spray water in the condensation section and is liquefied, and the liquefied cooling working medium enters a negative pressure
heat exchanger unit in the CDU under the assistance of a
circulating pump or gravity; a low-temperature gaseous cooling working medium after heat exchange enters a composite
gas phase pipeline on the primary side under the action of a sucking pump and is mixed with a high-temperature gaseous cooling working medium
coming out of a server cold plate, and then the precooled working medium forms a liquid working medium in a supercooled state through a throttling valve and is injected into a liquid
pool at the bottom of a
liquid storage tank; and redistributing to each server cold plate to finish cooling circulation.