Stadtwerke Gießen AG (SWG) is now using innovative combined heat and power technology to heat its car workshop in Lahnstraße: The newly installed combined heat and power plant (CHP) simultaneously generates electricity and heat to supply the company's own buildings in Lahnstraße and heats the car workshop with its waste engine heat. Normally, the waste heat from the gas-powered module from Köhler und Ziegler in Lollar, which has an electrical output of 50 KW and a thermal output of 96 KW, would be lost at the installation site. "Thanks to innovative technology and additional technical effort, we have succeeded in utilising the waste heat from the engines to heat the car workshop. This would otherwise be lost," explained Jens Hanig (project manager and employee of SWG's heat supply department).
The CHP supplies heat to all administration buildings, the bus workshop and the training centre, heating a total area of 22,000 m². For comparison: the heat generated is enough to supply 26 detached houses and around 80 four-person households with electricity. This corresponds to an annual quantity of 672,000 kWh of heat and 35,000 kWh of electricity.
SWG's own buildings have already been supplied with heat and electricity from three BKHW and two gas boilers for 15 years. The latter will be used less in future thanks to the construction of the new CHP unit, as the heat will now be generated by environmentally friendly combined heat and power generation: A plus for the environment.
In addition to this advantage, the simultaneous generation of electricity and heat also results in primary energy savings of around 37 percent as well as areduction in CO2 emissions of 160 tonnes of C02 per year (or 41 percent). An exhaust gas heat exchanger was also installed to achieve an additional 10 per cent higher heat output. The CHP is thus operated as a condensing boiler.
Combined heat and power (CHP) as the simultaneous generation of heat and electricity helps to reduce energy costs due to its high efficiency. However, it also reduces climate-relevant emissions and conserves energy resources, is economical, environmentally friendly and reliable. CHP units play an important role in optimising the use of fossil fuels and saving energy.
Expertise in heating
District heating in Giessen - this stands for environmentally friendly and efficient energy generation on site, especially in combined heat and power plants. Anyone wishing to optimise their heating system should contact the experts at the district heating supply company. The district heating supply staff will take a close look at your heating system and can quickly tell you which technical and economic options are available to optimise your system. The service hotline can be reached on 0180 22 11 100 Monday to Friday from 7 a.m. to 7 p.m.