College combines chilled beams, DOAS and radiant in unique geothermal HVAC design
The 42,000-sq.ft. Davis Building's geothermal system supplies 58°F to 62°F closed circuit ground source water to ceiling-mounted, active chilled beams. Chilled beams reduce fan energy by up to 50 percent versus conventional air handling technologies. Embedded is 1/2-inch-diameter radiant PEX floor tubing by Viega. All combined, the chilled beams, radiant and DOAS provide even cooling and heating temperatures that are well within the six degree differential guidelines of ASHRAE Standard 55.