Basic situation of customers:

The Sino-French Aviation University is a higher education institution jointly established by Beijing University of  Aeronautics and Astronautics‌ in China and the French National Civil Aviation University. It is situated in Pingyao Town, Yuhang District, Hangzhou City, Zhejiang Province, adjacent to the core area of the Liangzhu Cultural Site, a UNESCO World Heritage Site. As a landmark project of Sino-French cooperation, the university represents a total investment of nearly ten billion yuan and spans a planned area of 1,500 mu. It encompasses seven colleges, including the Sino-French Institute of Engineering, the College of Aeronautical Science and Engineering, and the Civil Aviation College, with a commitment to establishing a world-class institution in civil aviation with distinctive Chinese characteristics. Its campus architecture must meet international standards for teaching, research, and living facilities, imposing stringent requirements on the energy efficiency, stability, and environmental performance of its HVAC systems.

Issues that need resolving:

As a core scientific research infrastructure, the Sino-French Aviation University Data Centre requires to operate year-round without interruption, presenting the following challenges for indoor environmental control:

1. High-precision temperature and humidity control: Data centre equipment is sensitive to temperature fluctuations, requiring a constant temperature and humidity environment to ensure operational stability.

2. High energy consumption and carbon emissions pressure: Traditional air conditioning systems account for a significant proportion of energy consumption, conflicting with the campus's positioning as an ‘ultra-low energy consumption building demonstration project’.

3. Equipment maintenance accessibility: The compact data centre space requires an air conditioning system featuring modular design and rapid maintenance capabilities.

4. Adaptability to extreme operating conditions: Hangzhou experiences high temperatures and humidity in summer, coupled with damp cold in winter, demanding stable equipment operation under complex climatic conditions.

Solution:

WARM has customised and deployed a falling film evaporative condensing (heat pump) outdoor unit connected with the indoor chilled water type precision air conditioner. Its core advantages are as follows:

1. Technological Innovation and High Energy Efficiency

· Dual-cooling-source falling-film evaporation technology: Employing full stainless-steel evaporative coolers with a seamless surface design, this breakthrough achieves 40% greater energy savings than conventional air-cooled systems and 20% greater energy savings than water-cooled systems through high-efficiency energy-saving technology, with a refrigeration COP as high as 5.9.

· Modular Intelligent Control: Units support flexible multi-module configurations where single-module faults do not disrupt overall operation. Central microprocessor-based automatic capacity regulation reduces energy consumption by over 30%.

2. Reliability and Easy Maintenance

· Dual-Mode Switching Function: Automatically switches to finned heat exchangers during evaporative unit maintenance, ensuring uninterrupted system operation.

· Remote Monitoring and Self-Diagnosis: Equipped with an intelligent control system supporting remote fault alerts and parameter adjustments, reducing on-site maintenance frequency.

· Corrosion-Resistant Materials and Extended Lifespan: Utilises high-efficiency scroll compressors and titanium tube heat exchangers, adapted for Hangzhou's high-humidity environment, with a design lifespan exceeding 15 years.

3. Optimized Environmental Adaptability

· Wide Temperature Range Operation: Units maintain stable performance from -10°C to 48°C, meeting Hangzhou's seasonal climate demands.

· Water-Saving Design: Evaporative condensation technology reduces cooling water consumption by over 50% compared to conventional water-cooled systems.

Customer benefits:

1. Significant Reduction in Operational Costs

Energy cost reduction: Annual electricity consumption of the data centre's air conditioning system decreased by approximately 40%. Combined with Hangzhou's electricity pricing policy, this yields annual electricity savings exceeding one million yuan.

Maintenance cost optimisation: Modular design reduces maintenance time by 60% and lowers spare parts inventory costs by 35%.

2. Enhanced Research Environment Stability

Temperature and humidity fluctuation <±1°C: High-precision control ensures stable operation of server clusters, reducing failure rates below 0.2%.

Silent operation design: Unit running noise <55dB, meeting stringent acoustic requirements for data centres.

3. Supporting Green Campus Development

Carbon reduction contribution: Annual CO₂ emissions reduced by approximately 800 tonnes, aiding the campus in achieving its 'carbon neutrality' objectives.

4. Long-Term Collaborative Value

WARM provides comprehensive lifecycle services for the Sino-French Aviation University, including regular inspections, energy efficiency optimisation, and technological upgrades to maintain equipment in peak condition. Its integrated undergraduate-postgraduate training model synergises with WARM's technical team, fostering industry-academia-research collaboration to cultivate multidisciplinary talent for civil aviation.