Daikin Vision with SVT Image courtesy of Daikin Applied

IAQ – Daikin Applied Vision

The Daikin Applied Vision air handler with sorbent ventilation technology (SVT) from EnVerid is a total-air-quality system that combines the benefits of sorbent media with a class-leading, semi-custom air handler. Vision with SVT provides IAQ design flexibility that creates heathier and more sustainable indoor spaces. Sorbent filtration removes volatile organic compounds (VOCs) and carbon dioxide (CO₂) while allowing oxygen and water to pass through freely. Right-size building ventilation, energy costs and equipment by applying SVT with the ASHRAE Standard 62.1 IAQ Procedure (IAQP).

Vision with SVT is recommended in applications with high outdoor air requirements, such as schools, office buildings, airports and indoor arenas.

While the process of integrating SVT into Vision units took nearly a year, the development of SVT took more than five years of multidisciplinary R&D. This is because SVT incorporates a patented sorbent media technology that was developed through collaborations with multiple universities, chemical companies and the U.S. Department of Energy. Innovations in mechanical system design were also required to ensure the desired interaction between airflows and the sorbent media to clean indoor air and regenerate the sorbent media for long lifetime use.

To ensure IAQ and energy savings were met, Daikin engineers conducted R&D work to integrate the SVT modules into Vision units. They optimized the system architecture for size and cost through an iterative design and testing process, and conducted air quality testing. They also performed thermal analysis testing to ensure energy efficiency and heat distribution of the sorbent regeneration and air-cleaning cycles. Finally, they optimized the operating cycles for different modes to meet user-defined energy-savings and CO₂-removal goals.

The SVT module inside the unit is designed to clean the full range of contaminants defined in the IAQP. Using the IAQP with this air cleaning module lowers the outside airflow baseline compared to a typical air handler.

The sorbent filters only need to be replaced once every two years and can be swapped out by facility personnel. In addition, the air handler ships with a unit-mounted controller for the SVT section that ties into the unit controller via digital inputs. All sequences of operation are predefined at the factory, and times and temperatures can easily be adjusted to meet specific building needs.

Initial costs are reduced by downsizing the tonnage of the HVAC system and lifetime utility costs are significantly reduced due to the lower energy consumption of these units.

This product provides enhanced IAQ while decreasing energy consumption. Additionally, this product can also be deployed where the outside air quality is poor — in locations near airports and highways, for example, and in regions that experience frequent high ozone days and/or smoke from wildfires.