ASHRAE Thermal Guidelines for Data Centers

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The American Society of Heating, Refrigerating & Air-Conditioning Engineers (ASHRAE) is committed to advancing the arts and sciences of heating, ventilation, air conditioning and refrigeration to serve humanity and promote a sustainable world. They have published the 3rd edition of “Thermal Guidelines for Data Processing Environments” in response to the industry need & migration toward increased energy efficiency for data center operation. Presented from a vendor-neutral perspective ASHRAE states that the book will “empower data center designers, operators, and managers to better determine the impact of varying design and operation parameters.”

This is worth the read as it is authored by ASHRAE Technical Committee 9.9, Mission Critical Facilities, Technology Spaces and Electronic Equipment. This series provides comprehensive treatment of datacom cooling and related subjects.

This guide covers five primary areas:

  • Equipment operating environment guidelines for air-cooled equipment (six classes are defined)
  • Environmental guidelines for liquid-cooled equipment (five classes are defined)
  • Facility temperature and humidity measurement (to evaluate data center health)
  • Equipment placement and airflow patterns (a hot-aisle/cold-aisle layout is recommended)
  • Equipment manufacturers’ heat load and airflow requirements reporting.

You can purchase a bound version, or a secure downloadable pdf at the ASHRAE bookstore

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