2020 ASHRAE TECHNOLOGY AWARD CASE STUDIES Figure 2 (Above) The radiant floor and mullion-mounted panels work to create a warm surface on the inside of the triple pane insulated glass to ensure that the mean radiant temperature of the space remains as close to the air temperature as possible. (Below) Displacement diffuser detail at exterior glass system. further increase the IAQ for the passengers MrJ and staff. Thermal comfort in an airport is very 16 in. × 14 in. SA Up Into Plenum diverse and changing. ASHRAE Standard 16 in. × 78 in. × 2 in. Displacement Diffuser 55-2010 metabolic rates of 1.0 to 2.6 met and 2 in. Min. Between Grille and Diffuser (Typ.) Displacement clothing insulation factors of 0.57 to 1.0 clo Diffusers Installed Between 21 in. × 32 in. × 84 in. were used to determine acceptable temperaSupports SA Plenum by Mechanical. ture and humidity ranges. Space Between Architectural Plenum Shall be Lined With Grille and Diffuser Shall be Insulation and Sealed Airtight While the perimeter heating design along Sealed Airtight the expansive glass wall system provided 28 in. × 78 in. × 2 in. 28 in. × 78 in. × 2 in. Displacement Diffuser energy savings, when coupled with the disDisplacement Diffuser placement diffuser arrangement, it helped Mr4 Mr4 maximize comfortable seating locations for Column Wrap with Architectural Grille, the marketplace restaurant (Figure 2). The radiant floor and mullion-mounted panels work to create a warm surface on the inside HR for High Bay HR for Low Bay of the triple-pane insulated glass to ensure that the mean radiant temperature of the space remains as close to the air temperature as possible. The displacement diffusers all maintain a discharge velocity under 30 fps (9 m/s) to minimize occupant discomfort due to convection and air noise while also maximizing ventilation effectiveness. MrJ In addition to the air and hydronic systems, Column Wrap Detail (Typical) 9 exterior fixed shading devices and internal M3.02 1 in. = 1 ft mechanical shading devices (controlled off internal solar sensors) also play a huge part to minimize the amount of shortwave during cooling operation. The mechanical shades are solar radiation transmitted through the low-e glazing also integrated into the building management system 38 ASHRAE JOURNAL ashrae.org AU G UST 2020https://www.ashrae.org/