Fan control system installation

The installation of inverters and a supervisory fan control system in commercial and warehouse buildings enabled an annual energy consumption reduction of 1.49 GWh. The modernization reduced operating costs and improved user comfort.

The challenge

In our Client’s commercial and warehouse buildings, the ventilation system operated continuously at maximum capacity, regardless of actual demand. This resulted not only in high electricity consumption by the fans but also in excessive cooling of the rooms, which in turn increased the demand for heating energy to warm the supplied air.

The lack of an intelligent control system led to significant energy losses and high operating costs.

Our approach

The DB Energy engineering team proposed the installation of a supervisory control system designed to adjust ventilation efficiency to changing demand.

As part of the modernization, temperature sensors and optical sensors were implemented, integrated with inverters and control software.

Thanks to this, fan operation was made dependent on actual air parameters rather than on a fixed maximum capacity mode.

Solution

During implementation, inverters were installed controlled by exhaust air temperature, along with a set of sensors monitoring building conditions. Thanks to integration with the supervisory control system, fans were equipped with the ability for smooth speed regulation. The system analyzes sensor readings in real time from temperature sensors and optical sensors, then adjusts fan output power to the building’s current needs.

This solution enables flexible operation – fans increase their output only when the demand for air exchange rises. At other times, they operate in reduced-load mode. In practice, this means not only a significant reduction in electricity consumption by drives, but also limiting uncontrolled heat loss in winter or cooling loss in summer. The supervisory system eliminates the phenomenon of oversized system operation and allows stable indoor conditions to be maintained at much lower operating costs.

Results

The installation of the fan control system provided:

energy savings: 1.49 GWh/year,
investment payback period: approx. 1.5 years,
reduction in electricity and heating costs,
optimization of fan operation depending on actual conditions,
higher building user comfort thanks to stable air parameters.

Conclusions

The modernization of the ventilation system enabled energy savings of approximately 1.49 GWh annually, which significantly reduced operating costs of the buildings. The optimization of fan operation not only improved energy efficiency but also increased user comfort by better matching air parameters to actual conditions.

The investment is characterized by a short payback period – approx. 1.5 years.

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