Recently, MULTISTACK Jiefeng successfully completed the chiller retrofit project at the headquarters' north campus of China Unicom Liaoning Provincial Branch. The project delivered seven MVRW175 modular variable frequency scroll chillers in batch. Using a standardized modular splicing construction solution, the installation provides a solid equipment foundation and technical support for the safe, stable, and efficient operation of the communication room.

The retrofit took place at the Shenyang Unicom Building equipment room. Seven of MULTISTACK Jiefeng's new-generation variable frequency modular chillers were seamlessly spliced and integrated into a compact layout. The equipment is arranged neatly and uniformly, forming an integrated unit that maximizes the use of available space. The entire installation is standardized, clean, and aesthetically pleasing, perfectly meeting the requirements for centralized cooling and deployment in communication rooms. This project sets a benchmark example of modular variable frequency chiller splicing in the industry.

The chillers are equipped with high-performance variable frequency scroll compressors, offering full-condition wide-frequency load regulation from 20% to 100%. They can intelligently and adaptively adjust output based on real-time cooling load in the equipment room. Compared with traditional cooling equipment, they maintain high energy efficiency even under partial load conditions, significantly reducing overall energy consumption. This precisely meets the core operational requirements of communication rooms: 24/7 uninterrupted operation, low energy consumption, and high stability.

The units feature an innovative industry-leading internal large-pipe water circuit design, paired with high-efficiency plate heat exchangers. This optimizes water flow conditions within the piping, reduces pressure drops, and greatly improves overall heat exchange efficiency. Meanwhile, the internal piping structure simplifies on-site construction processes, shortens installation cycles, and effectively saves project construction costs and subsequent operation and maintenance expenses.

As the inventor of modular chillers, MULTISTACK Jiefeng has the refrigeration industry for many years. Leveraging its mature intelligent control system and modular architecture advantages, the company ensures long-term, stable operation of communication rooms. The chillers support independent start/stop of multiple modules, intelligent linkage and coordinated control, and maintenance without shutdown—perfectly suited for carriers' around-the-clock, uninterrupted operation and maintenance scenarios.

In this Shenyang Unicom retrofit project, the combination of MULTISTACK Jiefeng's new-generation variable frequency modular chiller's robust performance and standardized, exemplary splicing construction has successfully completed the upgrade of the equipment room's cooling system. It sets a replicable and referenceable application example for the telecommunications industry, enabling efficient, energy-saving, green, low-carbon, safe, and stable routine operation of communication and computing equipment rooms.