Your browser is outdated
To surf the Internet safely and display modern websites correctly, we recommend an update.
Check for updates here
Picture of a LORENZ straw insulation module moved by crane with reference object in Oberhausen in the background

Serial renovation in municipalities

Innovative teaching pool renovation with high efficiency

Europe's largest municipal straw insulation project

The Oberhausen model – as part of a municipal renovation project, the city of Oberhausen is renovating seven teaching swimming pools, five of which have been provided with straw insulation. The five locations are walls made of masonry or reinforced concrete, which have been insulated with LORENZ DD34 wood-straw modules and then boarded with larch wood. With the insulation, the wall reaches a U-value between 0.126 and 0.127 W/(m2K), which corresponds to passive house standard.

Project profile

End of construction: Servicebetriebe Oberhausen

Construction: craneable insulation modules with wall mounting

Year of manufacture: 2022-2023

LORENZ product: DD34

built-up area: 2.394m2

stored CO2: 149 t

Architect: baugestalt I Architekten

Image of a straw insulation module moved by crane for the serial and large-scale, energy-efficient renovation of the largest municipal reference project with straw insulation in Oberhausen
Climate footprint

Due to the low energy requirements for the production and execution of the straw insulation, the primary energy input (PENRT) for the insulation project has already paid for itself after just a few weeks of operation and energy savings.The eco-balance of the new insulation looks even more impressive: If the old materials reinforced concrete, concrete (or clinker construction) facade and polystyrene of the existing wall were produced at the same time as the straw insulation, a total of more greenhouse gases would have been removed from the atmosphere than supplied (between -10 bis -34 kg CO2 eq/m2); 1m2 of the modules used removes a total of 60 kg of CO2.

Energy efficiency

Per m2, the straw insulation results in an energy saving of 37 kWh. After completion of the energy refurbishments of the seven teaching swimming pools, the savings will amount to around 6,600,000 kWh/a (kilowatt hours per year) according to the city’s own information. This corresponds to a saving of around 8 percent of the total consumption of the city of Oberhausen.

Following the project call "KommunalerKlimaschutz.NRW", the department of climate and resource protection of the city of Oberhausen has submitted the implementation for the DISKO project to the district government of Düsseldorf. "DISKO" stands for "Digitalization as the key to climate protection - intelligent energy management of teaching swimming pools - The Oberhausen model". Seven teaching swimming pools were to be comprehensively and innovatively renovated.
In April 2020, the city received a 90 percent grant for a total of 9 million euros to implement the project. The funding is borne proportionately by the state of North Rhine-Westphalia and the EU.
Translate »