Domel's EC motors have reduced CO2 emissions by the equivalent of those produced annually by almost 20,000 cars: presented at ISH 2023
10. 03. 2023|Dr. Barbara Bertoncelj, Karmen Nastran
Domel is showcasing its ultra-high efficiency EC motors at the ISH trade fair in Frankfurt under the slogan "Solutions for a Sustainable Future".
Domel has now been developing and producing energy efficient EC motors, which rank among the best in the world in terms of efficiency, for thirty years. According to the International Energy Agency, electric motors and drive assemblies consume around half of all the electricity produced on Earth, which is why increasing their efficiency has great potential for reducing greenhouse gas emissions and helping with environmental protection.
One of the company’s market segments is electronically commutated (EC) motors. Due to their reduced electric power consumption, their greater efficiency is reflected in fewer greenhouse gas emissions and a lower environmental impact. EC drive systems intended for use in heating, ventilation and air conditioning (HVAC) in particular rank among the top five consumers of electricity. Due to their continuous, 24/7 operation, energy consumption is even more important in the applications in which such motors are used.
We estimate that the use of our IE5 efficiency-rated HVAC motors sold during the last eight years (2015–2022) saved more than 400 GWh of electricity in 2022 compared to the best-selling traditional asynchronous motors. This saving of 400 GWh of electricity can be translated into 92,700 tonnes fewer CO2 emissions, which is equal to the emissions generated by 19,900 cars in one year.
When developing our HVAC motors, a great deal of emphasis is placed on the optimal use of materials, state-of-the-art technology, a high level of efficiency and long service life. The motors do not require maintenance, as they do not contain mechanical parts subject to wear, with the exception of the bearings.
 The calculation was made based on the Rules on the Methods for Determining Energy Savings: http://www.pisrs.si/Pis.web/pregledPredpisa?id=PRAV14191.The EU electricity emission factor for 2020 (0.23 kg of CO2/kWh) was used for the calculation of savings of CO2 emissions. Greenhouse gas emission intensity of electricity generation by country — European Environment Agency (europa.eu)
 The CO2 emissions equivalent was calculated using the greenhouse gas equivalencies calculator on the website: https://www.epa.gov/energy/greenhouse-gas-equivalencies-calculator.
EC Systems, a business unit operating independently since 1998 under the able leadership of Mr Lojze Demšar, stands out as one of the most successful units within the Domel company. EC Systems manages its own sales, development, technology and quality control, while central services like planning, procurement and logistics support them.
Team and Work Environment
Currently, around 70 dedicated employees are involved in EC Systems’ programmes, primarily hailing from the Selška Dolina region and the vicinity of Škofja Loka. They operate cohesively as a team, conducting regular monthly programme meetings and weekly troubleshooting sessions. The department maintains a seamless flow of information, fostering a productive working atmosphere.
At the end of each year, the sales, development and production leaders present the results of the past year and outline plans for the upcoming year to all employees, including production workers. This inclusive approach ensures that everyone understands their roles and contributions. Additionally, the team comes together twice a year for a summer picnic and a pre-New Year celebration. In the winter, some colleagues even gather for Tuesday evening football matches, strengthening their bonds outside of work.
EC Systems predominantly specializes in fume extraction systems , followed by industrial vacuum cleaners, fuel cells, washing disinfectors and printing machines. Over the last three years, they have actively engaged in hydrogen technology, offering comprehensive solutions for air supply and pumps for hydrogen recirculation. This commitment aligns with their efforts to contribute to a greener future by reducing carbon footprints and preserving the environment for future generations.
In 2023, the largest markets for EC Systems are:
EC blowers find applications wherever:
a) long lifetime is essential, with their minimum expected operational time of 20,000 hours;
b) where the absence of brush dust is required, unlike traditional vacuum units;
c) precision control is required.
The EC blower&pump product range covers various voltages (low voltage, high voltage, DC and AC), with blowers ranging up to 2,500W in power. A global EC blower has been introduced operating at 100–240V, along with CAN communication capabilities for seamless integration with other systems.
EC Systems actively fosters innovation, generating numerous proposals, some of which have received awards. Notably, two Gold Award recipients hail from this business unit.
Since July 2020, a new expansion has been in place to accommodate increased production needs.
EC Systems establish a flexible medium-volume production approach, enabling the assembly of various products within a single shift. Since 2014, they’ve operated on two shifts. This year is expected to see a production increase of approximately 10%. They produce over 300 different blower concepts, necessitating an exceptionally flexible production process.
Sales and Development
Regular market trend monitoring guides EC Systems’ sales strategy, with a focus on identifying market needs before embarking on new product development. They currently serve over 250 different customers. All aspects of product development, including electronics and motor development, are carried out in-house. The development encompasses mechanical, electrical and software aspects.
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