In search of energy-efficient solutions, Enison implemented an advanced air recovery system in its offices on the first floor of an office building.

This system not only improves air quality, but also reduces energy needs for heating and cooling.

What is air recovery?

Air recovery is the process of replacing “spent” indoor air with fresh air from the outside environment. This process takes place in a device known as an air recuperator. In winter, the “spent” warm air from the rooms heats the incoming cold outdoor air, and in summer, the spent conditioned air cools the fresh warm air. The result is a significant reduction in the energy required to heat or cool the space.

Air recuperator in commercial premises Enison

Enison chose an Atrea air recuperator for its premises, type DUPLEX 1100 Flexi 3, with an air flow capacity of 1000 m³/h. This recuperator also includes a bypass option, allowing it to act as a classic fan under certain conditions, which is especially useful for passive cooling during summer nights.

Supervision and control of recuperators

For optimal control of the recuperator, an RD5 control unit was installed, which is integrated with the building’s centralized SCADA system. The installation of various types of sensors (temperature, humidity, flow, CO2, etc.) enables advanced system control capabilities, ensuring reliable and economical operation.

Efficiency and results

The heat exchanger is a key part of the recuperator that affects the efficiency of the recuperation, or thermal efficiency of the heat recovery. In Enison’s premises, the efficiency of the recuperation is an impressive 88%, which was recorded by monitoring the SCADA system.

The example from 23.08.2023 shows how the recuperator successfully reduces the outside air temperature from 36.5 °C to 27.7 °C, while the air released to the environment has a temperature of 33.8 °C.

Outside air temperature 36.5°C:

Exhaust – Air temperature 26.5°C:

With this advanced approach, Enison achieved significant effects in reducing energy costs and improving air quality in its premises.

Air recovery demonstrates how technological solutions can be key in creating a more comfortable and environmentally conscious working environment.