- Hangzhou startup bags shy of 100 million yuan as proliferating data centers pushes demand for liquid cooling
- Immersion cooling systems target surging power consumption from AI computing infrastructure
Hangzhou-based liquid cooling startup KeenCool (云酷智能) has raised nearly 100 million yuan ($14.7 million) in a Series B funding round, betting that the rapid expansion of AI computing will accelerate demand for more efficient data center cooling technologies.
The round was jointly led by Changjiang Capital and Chang Lan Technology Group, with participation from Arcadia Ventures. The company said the proceeds will be used for core technology development, market expansion and talent recruitment.
Founded in 2020, Keencool specializes in single-phase immersion liquid cooling systems for data centers, telecom base stations and energy storage facilities.
The startup develops its own cooling fluids and thermal management technologies, including precision flow control, intelligent cooling systems and residual heat recovery.
KeenCool said its immersion cooling systems can reduce data center power usage effectiveness, or PUE, to below 1.08, cutting overall energy consumption by nearly 40%.
China currently requires newly built large-scale data centers to maintain PUE levels below 1.3 under mandatory national efficiency standards.
The rise of AI computing has sharply increased electricity demand and thermal loads inside servers, pushing operators toward liquid cooling technologies as traditional air-cooling systems struggle to handle next-generation high-performance chips and dense computing clusters.
In late 2025, KeenCool and Shenzhen-based IT server provider Stone Group jointly unveiled what they described as the world’s first immersion-cooled intelligent computing solution built around Nvidia’s RTX 5090 GPUs.
This launch marks a significant step toward large-scale commercial deployment of immersion cooling systems.
The company has worked with major Chinese infrastructure and telecom players including State Grid Corporation of China, China Telecom, China Mobile, FiberHome and Inspur on liquid-cooled data center and communications projects across China.
