The high-bandwidth

low-latency and high-density deployment of 5 G applications further increases the demand for computing power

which brings huge challenges to existing cloud computing data centers. In the future

cloud computing data centers will differentiate from hyperscale data centers into edge data centers. In order to solve heat dissipation problem caused by the sharp rise in the power consumption of the processor chip and effectively improve the power usage effectiveness of edge data center

the existing communication room will be transformed and a submerged liquid-cooling system will be introduced. By evaluating the power usage effectiveness and total cost of ownership of the submerged liquid-cooling server system

the article verifies that the introduction of liquid cooling technology in the edge data center nodes with a single cabinet load exceeding 7 k W can recover the cost of transformation within two years

with improving service carrying capacity of the data center. The submerged liquid cooling system will become a weapon for reducing costs and increasing effi ciency of edge data centers in the future.