Ashrae 904 Pdf Upd

Standard 90.4 is a performance-based design standard developed specifically for data centers with a conditioned floor space power density greater than and IT equipment loads exceeding 10 kW . It serves as a companion to the more general ASHRAE 90.1 , which still governs non-data center elements like building envelopes and lighting. Key Performance Metrics

: Measures the efficiency of the cooling system. ashrae 904 pdf upd

: ELC segment calculations now use 25%, 50%, 75%, and 100% design load breakpoints to better align with MLC metrics. Core Compliance Metrics Standard 90

The 2022 update introduced several refinements to keep pace with evolving hardware and cooling technologies: ashrae 904 pdf upd