Stockholm Exergi, an energy company, is upgrading residential buildings in Sweden’s capital with advanced gateways, sensors from ebm-papst neo, and EC roof fans specially developed in Sweden by ebm-papst. This initiative aims to provide demand-based ventilation, saving up to 40% in heating energy and other costs through digitalization.
Energy Efficiency and Sustainability Goals
Stockholm Exergi is committed to making heat supply more sustainable and efficient for 800,000 residents while generating electricity for the energy market. The company is targeting climate neutrality by 2032 by focusing on renewable and recycled energy sources and modernizing urban infrastructure with innovative technologies.
Digital Retrofit for Better Energy Utilization
As part of this vision, Stockholm Exergi is enhancing district heating connections and implementing modern ventilation and air conditioning systems with heat recovery. These systems are crucial during cold Scandinavian winters when traditional ventilation methods, like open windows, would significantly increase heating demands.
A notable example of this initiative is a retrofit project in the Östermalm district, where an older residential building on Gyllenstiernsgatan has been equipped with ebm-papst’s comprehensive solution. This includes the Swedish MXRC III EC roof fan, which consumes about 60% less energy than its predecessor, and the IntelliGate Air X gateway controller with sensors and cloud integration. The energy-efficient roof fan operates on demand with low vibration, ensuring minimal disturbance for residents.
Enhancing Living Comfort with Smart Technology
The IntelliGate Air X gateway controller connects the fan to various external sensors and the cloud. With an integrated Narrow Band IoT modem, the system communicates with the cloud and transmits sensor data independently of the local network. Erik Brisenheim, Technical Manager at ebm-papst in Sweden, explains that this allows the gateway controller to send data without accessing the local network.
This transmitted data enables remote monitoring and automatic control of the ventilation system. The sensors and gateway controllers adjust the airflow as needed, resulting in cost savings. Operators gain comprehensive insights into ventilation frequency and energy consumption through extensive measurement data and cloud-based analyses. For residents, the new system ensures enhanced living comfort by guaranteeing air quality.
The retrofit project in Gyllenstiernsgatan marks the beginning of broader efforts to modernize other buildings, improve energy efficiency, and further reduce Stockholm's emissions, contributing to the city’s sustainable development goals.
