Chilled Water Systems for Data Center Sustainability

This white paper discusses the role of chilled water systems in enhancing data center availability and sustainability. It outlines how these systems can effectively reduce both direct and indirect emissions, contributing to a lower total equivalent warming impact (TEWI). The paper emphasizes the importance of optimizing chilled water systems through best practices and new technologies, which can lead to significant improvements in energy and water efficiency. It also details the environmental impact of refrigerants used in these systems, highlighting the shift towards greener alternatives with lower global warming potential. The analysis includes a discussion on the U.N. Kigali Amendment and its implications for refrigerant usage in data centers. Additionally, the paper presents optimization strategies for chilled water systems, such as increasing air and water temperatures and utilizing free-cooling technologies. Overall, the document serves as a comprehensive guide for data center operators aiming to meet sustainability goals while maintaining operational efficiency.