TECHNICAL FEATURE FIGURE 8 One of the major features of DOAS is their ability to modulate energy usage at part load conditions. 97% Space Conditions Cool 67°F Warm 73°F Warm 74°F Within Setpoints Total Run Time (Hours) Space Setpoints: Heating 68°F/Cooling 73°F 160 144 140 120 100 80 60 60 42 40 25 19 20 8 1 0 0 20 30 40 50 60 70 80 90 Compressor Speed Distribution (% of Maximum Speed) Time at Space Condition Compressor Speed Distribution information and feedback loop ends up expediting or eliminating the typical trial-and-error approach taken in so many HVAC applications today. Access to real-time and historical operating data with the ability to remotely adjust settings results in lower diagnostic costs and improved troubleshooting accuracy. Manufacturer Benefits Even though connected commissioning typically 0% 38% 100% Average Compressor Speed provides the greatest benefit to customers, end users and support teams, equipment manufacturers can also see substantial benefits as well. HVAC equipment manufacturers tend to have somewhat limited performance data when it comes to the development of their products. Typically, manufacturers' data comes from computer simulations, lab testing and a limited number of test sites. However, through a large-scale ASHRAE compliant air quality solution that saves energy and reduces HVAC costs. The enVerid HLR Series Indoor Air Scrubbers Removes key contaminants from indoor air, enabling: * * * Less energy for cooling or heating outside air Lower HVAC equipment costs Compliance with ASHRAE 62.1 IAQP HLR 15M Module HLR 15R Module www.enverid.com 28 ASHRAE JOURNAL ashrae.org FEBRUARY 2020 Visit us at Booth #3381http://www.enverid.com https://www.ashrae.org/