The 75F Dynamic Airflow Balancing (DAB) system offers proactive zone control by remotely monitoring and adjusting conditions in individual spaces, ensuring superior comfort and efficiency. It utilizes predictive machine learning algorithms to optimize heating and cooling capacity, efficiently redirecting conditioned air to the areas that need it most. Multiple independent, third-party tests have confirmed that our approach can slash utility costs 26 to 45 percent.
Energy Efficiency That Scales
Dynamic Airflow Balancing scales easily from simple RTUs to advanced hybrid AHUs, and works out of the box to stage fan speed to airflow requirements in the system based on thermodynamic calculations to continuously redirect air. In a variable air volume system with staged heating or cooling, VFD frequencies are automatically set to best match the required stage. For built-up AHUs with chilled water and/or hot water coils and variable frequency drives, DAB resets temperature at the air handler to an optimum value for load calculations. This means proven performance in buildings of every size.
Predictive and Proactive
75F’s wireless sensors, placed in each zone, capture thousands of data points a minute and millions of data points daily. Data flows across a secure 900 MHz wireless mesh network, to the 75F cloud, where third party weather forecasting and historical data merges in a dynamic thermal model of each building to predict optimal control strategies. After just a few days, the 75F cloud can accurately anticipate heat loads and can use that information to predictively and proactively control the temperature and air volume in zones or offices. After a just a few weeks the weighted average and zone priorities of each building begin to allow zones to arrive at their setpoints at the same time, increasing building comfort, time the system spends in ventilation modes, the life of HVAC equipment, and energy savings even further.
Individual Comfort Control
The DAB design is fine grained, so every space gets its own individual temperature control. With these tools, building engineers who implement 75F’s DAB technology can expect vastly improved energy efficiency, occupant comfort, and productivity. These advantages are accessible to a wide variety of commercial buildings thanks to a full-stack solution that works out of the box, scalability across a range of central plant equipment and site footprints, and intuitive and user-friendly tuners like zone prioritization for hassle-free operation.
The Importance of Balance
The two most important loads, or differences between current and desired temperature, in a building are the system load and the zone load.
What makes 75F unique is that as an IoT-based system, customers have the benefits of the 75F cloud for much larger and more accurate data analysis and predictive calculations more complex than any on-premise system can handle.
What makes 75F Dynamic Airflow Balancing unique is that sensor data is used to constantly recalculate weighted averages across zones to create an accurate system load, and then air quality, occupancy, and setpoint data is used to constantly predict and reprioritize zone loads in each space.
This means that decisions flow from the 75F cloud back and down to the CCU to engage the RTU or AHU at the optimal time, with adjustments made to dampers in zones throughout the building simultaneously to maximize the performance of the system. This application effectively keeps the HVAC system optimized, or in balance, while simultaneously ensuring air is always being directed where it is needed most.
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