Chongqing Data Center Indirect Evaporative Cooling Tower Project

Project Overview
This project is located in Chongqing and serves as a core computing hub node for the Southwest China region. It is a key low‑carbon upgrade project of the region in 2025. The data center covers a total floor area of 3,844 square meters, with four stories above ground and a total height of 22.9 meters. It holds multiple high‑level certifications, including Tier III+, National Class A, and Industry Five‑Star, and is nationally recognized as a green data center, a regional cloud‑network core node, and a primary disaster recovery node.

The data center functions as a backbone direct‑connection node, serving over a hundred government, enterprise, leading internet, and financial institution clients. It is the core computing infrastructure supporting the digital economy development of Southwest China. The current upgrade targets the first batch of main computer rooms put into operation on the campus. These buildings are large in scale, possess strong computing capacity, and are high‑standard green computing carriers for the region.

Through comprehensive measures—including chilled‑source system optimization, airflow organization retrofitting, intelligent control upgrades, and power supply energy‑saving modifications—the project aims to reduce the facility’s PUE and significantly enhance operational energy efficiency and O&M management. Upon completion, it will become a demonstrative model for green low‑carbon data centers in Southwest China, further strengthening the regional computing infrastructure and supporting high‑quality development of the digital economy.

Operation Modes
The design adopts AOLAN indirect evaporative cooling chillers. During hot and humid summer conditions, the indirect evaporative cooling chillers operate as cooling towers, with supply/return water temperatures of 31°C/37°C. In transitional seasons (spring/autumn) and winter, the chillers serve directly as the cold source, with supply/return water temperatures of 15°C/21°C, supplying chilled water to terminal units and achieving system‑wide energy savings.

Technical Highlights

• Green & Energy‑Efficient: The project utilizes AOLAN indirect evaporative cooling chillers, which efficiently harness natural cold sources. Compared with conventional direct evaporative cooling tower systems, this approach significantly extends the duration of full free‑cooling operation, minimizes mechanical refrigeration energy consumption, and achieves annual energy savings.

• Smart Construction: The project implements a full‑scale “smart construction site” management system throughout the process. Using IoT, big data, and other technologies, it enables information‑based control over the entire construction workflow, effectively improving construction safety and management efficiency.

This project serves as a typical demonstration of AOLAN indirect evaporative cooling technology in the hot and humid climate of Southwest China. It not only validates the technology’s adaptability and energy‑saving potential in high‑humidity areas but also provides a replicable and mature solution for low‑carbon upgrades of existing high‑grade data centers in China. Through deep integration of technological innovation and scenario‑based application, the project achieves simultaneous improvements in computing capacity and energy efficiency. While ensuring the computing supply for the regional digital economy, it strongly supports the implementation of the “dual carbon” goals in data centers and holds significant benchmark value for promoting the green transformation of the data center industry across Southwest China.