As a leading technology company, we are always focused on the entire life cycle of our products and, of course, the basic production conditions. This is achieved by regularly checking potential resource savings and by avoiding impacts on the environment during production. Every individual employee is asked to make use of the opportunities available to him at his place of work to contribute to further improvements.
Our products are used throughout the world in a variety of application areas. It is our aspiration to develop and manufacture durable and sustainable products. All Diehl locations worldwide attach the same great importance to energy efficiency and CO2 savings. With best-practice examples we underline the knowledge- and technology-based approach of our efforts. We regularly exchange views and learn from each other throughout the group.
„Free Cooling“ chiller in the data center
Cooling in a data center needs a lot of energy. When modernizing the data center in Röthenbach, care has been taken to install an especially powerful and simultaneously energy-efficient solution.
Modern chillers use the temperature of the ambient air to reduce the energy required for air conditioning of the data center. „Free Cooling“ uses the cold ambient air to reduce the chiller’s cooling power. Thus, the chiller cools itself and needs less energy.
This principle can be used in ambient temperatures below 15°C. In our region, outdoor temperatures frequently are lower, even in summer nights, so that the chiller is highly efficient. When temperatures fall below 5°C, the complete cooling performance is provided by „free cooling“, thus achieving annual power savings of approx. 200.000 kWh.
Cooling and heating systems are needed for the air conditioning of production and office buildings to achieve the room temperatures required in the buildings.
In the summertime, the cooling of particular production areas leads to high power consumption at the Laupheim site due to the heat emitted by the machines.
Two cold water chillers cool approx. 85% of the production areas of Diehl Aviation Laupheim. In 2013, the chiller in the production building was completely retrofitted. Facility management installed compressor technology with speed-controlled screw compressors achieving high efficiency. The system at Diehl Laupheim is one of the first reference systems based on that technology, which is in industrial use.
In 2016, another building was equipped with the proven compressor technology.
E-mobility as a future-oriented concept for tomorrow’s automotive industry
The automotive industry is undergoing a change. Above all automobile emissions are to be further reduced to achieve climate and environmentally friendly mobility. Diehl Metall is working on innovative vehicle and drive concepts for transmission, engine and battery. For these parts of a vehicle, non-ferrous metals such as copper or brass will be used in the future, especially in electric drives. They are more environmentally friendly, save oil reserves and reduce CO2 emissions.
Diehl Metall develops and manufactures materials and semi-finished products (strips) made of copper alloys. They are used for components in the electrified drivetrain and for battery cell contacts. Thus, Diehl Metall makes a decisive contribution to sustainable and CO2-free mobility.
If 100,000 electric cars on German roads were substituted for the same number of gasoline-driven cars, 225,000 tons of CO2 could be saved, based on an average CO2 emission of 150 g/km and an annual distance traveled of 15.000 km.
Inverters improve energy efficieny
A lot of energy is required for the manufacture of bronze strips in continuous strip casting plants. At Sundwiger Messingwerk, the furnaces of the continuous strip casting plants are heated electrically. Step transformers were previously used in the furnace control of an older strip casting plant. In the course of plant modernization, they were replaced by modern frequency inverters. Now it is possible to not only change the amplitude but also the voltage frequency. Owing to this flexible and individual configuration, the control of induction furnaces can be regulated and bronze strips can be manufactured in a more cost-efficient manner.
Furthermore, the furnaces of this continuous strip casting plant are no longer cooled by air but by water because water is a better energy carrier, thus replacing cost-intensive cooling-air generation by means of fans.
The measures taken considerably improve the energy efficiency of the continuous strip casting plant at the Hemer site: CO2 emission has been reduced by approx. 160 tons per year. These modern and future-oriented solutions provide the basis for sustainable economic activity, with special emphasis on energy savings.
Smart meters for ecology-minded consumers
Most people know water, gas, electricity and heat meters as devices installed in the basement where they measure the respective amount consumed that is passed on to the water or energy provider. Thus, the occupants know the total amount consumed but do not know when their consumption is particularly high and what to do about it.
Smart meters create transparency: Through an app, customers have easy access to understandable real-time information about their electricity, gas, water or heat consumption. So, they can identify savings potentials and change their consumption behavior. Anyone who takes appropriate measures can save up to 20%.
Diehl Metering produces and markets water, thermal energy, eletricity and gas meters that collect data via a secured system. Data security is of utmost importance. BSI*-conformal system technologies ensure that no personal data are made transparent through the consumption data.
*BSI= Bundesamt für Sicherheit in der Informationstechnologie (German Federal Office for Information Security)