HONORABLE MENTION | 2022 ASHRAE TECHNOLOGY AWARD CASE STUDIES for the whole building when compared to an ASHRAE Standard 90.1-2010 baseline building. With a measured building energy of EUI of 35.1 kBtu/ft2·yr (398.6 MJ/m2·yr) the building is not performing as anticipated. The project team believes a major component of the additional energy use is the impact of the unoccupied and, therefore, unconditioned fi rst fl oor, creating additional cooling and heating loads for the owner's tenant space. Thermal labyrinth. monitoring and active control of the amount of ventilation air provided to the zone. The inclusion of these energy effi ciency measures into the energy model resulted in a predicted (modeled) energy use intensity (EUI) of 27 kBtu/ft2·yr (307 MJ/m2·yr) for the owner's tenant space. The building was also modeled for LEED certifi cation with a predicted energy use reduction of 14.6% (without use of PV) Operation and Maintenance An important component of the mechanical system maintenance was the cleanliness of the thermal labyrinth. During construction, special attention was focused on cleaning and sealing the surfaces of the labyrinth to eliminate potential for water leaks and prevent mold growth. Ongoing maintenance includes vacuuming and mopping the fl oors, wiping down the walls and visual inspection of surfaces for leaks or mold growth. GET AQIP-CERTIFIED Reduce Callbacks Our new Armacell Qualified Installer Program (AQIP) combines online learning and hands-on training for companies who want highly-skilled and efficient installers who will get it installed right...every time. // Better installations with fewer callbacks save money // Inclusion in our qualified installer referral database // Promoted through Armacell's digital channels // Valued at $250 per trainee-offered free of charge Scan the QR code to learn more! www.armacell.us 50 ASHRAE JOURNAL ashrae.o rg A U G U S T 2 0 2 2 © Armacell, 2022http://www.armacell.us http://ashrae.org