By Bill Kosik, PE, CEM, LEED AP, BEMP; exp, Chicago ASHRAE Standard 90.4 is a flexible, performance-based energy standard that goes beyond current ASHRAE 90.1 methodology. Learning objectives: Explain ASHRAE Standard 90.1. Understand the fundamentals of ASHRAE Standard 90.4. Explore how ASHRAE 90.4 will impact data center mechanical/electrical system design. The data center industry is […]