The history of DeVeTec starts in 2000, when the founder had the idea of converting exhaust gases from vehicles into energy, and thus into mechanical work.
Initially, together with one of the largest vehicle manufacturers in Germany, basic research was carried out for several years to find out which combination of work machine and medium is the most effective, before commencing production of the first mobile ORC engines in their own workshops. For this, various patents were registered sometimes independently, sometimes together with the vehicle manufacturer.
Once the mobile system for using waste heat had proved itself to be efficient and functional, the consideration arose that what had been developed on a small scale for the use of discarded waste heat flows could be modified to avail of large industrial flows.
From 2007, the combination of the ORC piston engine with fluid ethanol then formed the basis for the development of the stationary waste heat power plants which are manufactured today by DeVeTec, and are available on the market. The idea convinced the BMWi (German Ministry for Economic Affairs and Energy), which jointly financed the creation of a first test system as part of a pilot project (ORCent) in the period 2008-2010. The results of the project, which concluded successfully, were so promising that a test phase then followed, again supported by the BMWi: 4 further waste heat power plants with 4 different industrial partners from different sectors (chemical industry, metal processing, biogas plant, glass industry) were constructed in the period 2010-2014.
In addition, at the end of 2014 the first commercial system was sold, which accomplished DeVeTec's entry into the market. In mid-2015, DeVeTec gained a strategic partner in the Degao company of China, who made it possible to further purposefully promote the growth of DeVeTec.
In September 2016, DeVeTec was moved to their new premises in St. Ingbert. As part of the company's expansion strategy, the new location - a production hall spanning over 1,500 sqm and an integrated administrative wing measuring an impressive 800 sqm - sets the basis for future growth.
Here are our Projects:
Metal processing plant
The first commercial waste heat power plant of DeVeTec GmbH has been erected in Hohenlimburg, the location of the BILSTEIN cold rolling mill.
As part of an increase in capacity, BILSTEIN erected a new state-of-the-art bell annealing plant, which can be operated in an extremely energy-efficient manner thanks to the innovative heat recovery concept. It is possible to save up to 900 MWh of electricity each year. During the controlled cooling of the coils, waste heat is generated which can be transferred to the ORC medium, ethanol, of the waste heat power plant, via a thermal oil circuit.
Another ORC system was erected on the premises of Badische Stahlwerke and is intended to work as the fourth pilot plant for the field testing programme.
Our ground-breaking technology further improved the recovery of waste heat at the company's natural gas-fired pusher furnace. The thermal exhaust gas energy available downstream from the pusher furnace's recuperator is exploited for electricity production thanks to the use of our efficient ORC module. In addition to generating electrical energy, the company plans to utilise the waste heat from the ORC process to operate an absorption chiller.
In December 2013, the third field trial system was commissioned at the natural gas fired glass foundry of Noelle & von Campe Glashütte GmbH.
The source of waste heat utilised by this field trial system supplies a constant heat level all year round, thus creating an environment for the ORC system that is ideal for producing large amounts of electricity and useful heat. The conditions on site allow for installation directly beside the waste heat source, allowing the plant to be connected into the existing system and thus to keep short the pipework distances required for flue gas, ethanol, and service water.
In January 2013, the second field trial system was commissioned in the Worms plant of Evonik Industries.
Here, the source of waste heat for the ORC process is cooling air from an acid splitting plant (for the manufacture of sulphuric acid), which has a maximum temperature of 350°C.
The distinguishing characteristics of this installation are its integration into a complex industrial production process with demanding safety requirements and the fact that it was installed and passed the acceptance test within an exceptionally short period, i.e. less than four months.
In 2012 the DeVeTec ORC system was commissioned in the cogeneration unit (CHP) of a biogas plant in Kirchwalsede.
For the first time for ORC plants, the waste heat of two biogas engines is used by a single ORC plant. The CHP's waste heat recovery concept remains unaffected by this. Even after the electricity generation from the exhaust gas heat from the CHP, the waste heat of the DeVeTec ORC system still delivers sufficient energy for drying the fermentation residue from the biogas plant.
From as early as the start of 2009, the DeVeTec ORC has been using the waste heat from a large engine which is operated using mine gas.
A partial flow is tapped from the exhaust gas flow of the engine, and this transfers a large part of its heat to the working medium, ethanol, in a 7 m high evaporator. A maximum heat output of 1.3 MW is extracted from the exhaust gas system (shown in red in the top image).