Ashrae 90.1 Standard for Building Envelopes

First appearing in 1975, an updated Ashrae 90.1 energy standard for all but low-rise residential buildings comes out every 3 years. Taking into account current technology and life cycle cost, Ashrae 90.1 establishes minimum energy efficiency requirements for building design and operation including building envelopes (as of 2007). Ashrae 90.1 Currently, the Ashrae 90.1 uses the 8 […]