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ITU-T work programme

[2025-2028] : [SG5] : [Q6/5]

[Declared patent(s)]  - [Associated work]

Work item: L.1322 (ex L.thermal_DC)
Subject/title: Multi-level metrics for thermal environment and thermal performance of Data Centre
Status: Under study [Issued from previous study period]
Approval process: AAP
Type of work item: Recommendation
Version: New
Equivalent number: -
Timing: 2025 (Medium priority)
Liaison: -
Supporting members: China Telecommunications Corporation
Summary: This Recommendation specifies a quantitative evaluation framework for the thermal environment of data centres characterized by high heat-flux density, stringent environmental requirements, and refrigeration systems with year-round operation. The framework defines multi-level indicators: room-, row-, cabinet-, device-, and chip-level, covering airflow organization and cooling effectiveness. The framework supports identifying hot spots, optimizing airflow patterns, reporting safety levels, and quantifying energy use and savings potential, and it enables comparison across data centres of different sizes, layouts, and airflow schemes.
Comment: -
Reference(s):
  Historic references:
Contact(s):
Siwei LIU, Editor
Ying SHI, Editor
Rumeng TAN, Editor
ITU-T A.5 justification(s):
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First registration in the WP: 2023-07-13 11:33:25
Last update: 2025-11-10 08:16:42