Project Overview
A medium-scale intelligent computing data center with total cabinet heat load of 4200 kW, requiring 24/7 continuous heat rejection. Located in northern China, the site faces freezing risk in cold winter months. Open cooling tower was initially considered, yet it risks scaling and particle contamination for liquid cooling loops, with heavy maintenance work and strict PUE control requirements.
Key Challenges
High cleanliness requirement for server liquid cooling circulating fluid
Risk of coil freezing during long cold winter periods
Need to utilize free air cooling to lower overall PUE
Limited installation footprint
Solution
6-unit modular counter flow closed circuit cooling towers (5 working + 1 standby for redundancy).
1.Fully sealed coil loop isolates process fluid from spray water, preventing dirt and scale entering IT liquid cooling circuits.
2.VFD driven fans & spray pumps adjust output based on ambient wet bulb temperature and real time server heat load. Dry mode operation activates in cold seasons against freezing risk.
3.316 stainless steel coils, anti clog spray nozzles and integrated filtration & water treatment assemblies equipped.
4.Service access doors allow unit by unit maintenance without full system shutdown.
5.Connectable with data center BMS system for remote monitoring of temperature, fan and pump status.
Project Outcomes
Stable 24-7 heat rejection, zero server downtime caused by cooling system failure.
Effectively utilize free cooling; overall data center PUE maintains below 1.26.
Minimal scaling inside closed loop, chemical water treatment consumption and maintenance workload drop by ~38%.
Dry-mode operation in winter reduces spray water consumption, achieving around 65 % water saving rate.
Modular redundant setup enables individual unit service without interrupting overall data center heat dissipation.
About us
Shandong Cronx Heat Transfer Technology Co., Ltd., former Caesn, established in 2011 and located in Weifang, China, covers 16, 000 square meter with 169 employees. We specialize in cooling towers, evaporative condensers, air cooled heat exchanger, Adiabatic air coolers and other industry heat exchanger equipment, featuring high efficiency, energy saving, and reliable performance. Our products are widely used in Energy & Power Generation, Oil, Gas & Petrochemicals, HVAC, Data Centers & Cold Storage, Food & Beverage Production, Chemical & Industrial Processing, Semiconductor & Electronics, Pharmaceutical & Biotechnology Manufacturing, Environmental & Water Treatment. At Cronx, innovative ideas are implanted in the hearts of every employee, and it actually runs through entire workflow. In the past ten years, Cronx have accumulated more than 60 invention and utility model patents. We operate under a comprehensive ISO management system and hold CTI, CE, and EAC certification, Designed and manufactured strictly in accordance with CTI heat exchange standards, also has a strict quality control system. ensuring international quality and compliance. Our products are exported to the America, South America, Middle East, South Africa, Central Asia, and Southeast Asia. and other cold regions such as Russia，With stable quality, competitive pricing, and professional service, we provide customized cooling solutions to meet diverse industrial needs worldwide. Cronx has established long term supply relationships with well known brands. In the future, we will adopt a more inclusive and open approach to achieve closer strategic partnerships based on mutual trust, mutual assistance, and mutual benefit with industry colleagues, suppliers, and customers.
