100 Climate Protection Housing Estates in North Rhine-Westphalia
Climate protection is one of the most important challenges facing us at the present time. The state government of North Rhine-Westphalia is therefore committed not only to the measures being taken on a European and national level, but also to its own energy and climate protection strategy.
About one third of the total end energy consumption in Germany is needed to heat rooms and generate hot water in buildings. Energy-efficient construction and the energy refurbishment of buildings therefore play a major role in climate protection policy.
The construction and refurbishment of complete housing estates open up far-reaching possibilities for CO2 reduction. In the past it has already been possible to achieve significant successes in North Rhine-Westphalia by a combination of energy savings and the use of solar energy within the framework of the project "50 Solar Housing Estates in North Rhine-Westphalia".
As a component of the North Rhine-Westphalian energy and climate protection strategy, it is intended with the new project "100 Climate Protection Housing Estates in North Rhine-Westphalia" to consistently reduce the heat-related CO2 emissions in residential estates. For this purpose it is possible to apply all technologies which are suitable for achieving CO2 reductions. Planners and investors thus have the freedom to choose from a wide range of innovative building standards and supply variants.
The present planning guidelines put forward requirements and recommendations for the climate protection estates. Depending on the type of building concerned, the permissible CO2 emissions in the construction of new buildings are about 50 - 60 % below the figures obtained for reference buildings according to the energy saving regulations EnEV 2009.
Even though climate protection housing estates are mainly aimed at avoiding CO2 emissions, they are also intended to exhibit special urban planning and social qualities over and above their innovative energy concept. The aim is to promote environmentally sound construction as a major component of sustainable settlement development.
Short brochure "Built-in climate protection"
(download and order)
Examples of completed estates:
Düsseldorf-Garath - District Renovation
In the south of Düsseldorf, a residential area was upgraded by a housing association through remodeling, renovation and new construction. This included the construction of four new apartment buildings with 65 rental apartments which were built as climate protection estate. They are situated in the immediate vicinity of the Solar Estate Düsseldorf-Garath. The quality of the housing was significantly improved over the original buildings by the addition of an underground car park, barrier-free access, and tenants' gardens or balconies. The apartments have a heating demand of 29 kWh/m²a, which is covered by district heating. Mechanical ventilation systems with heat recovery ensure a high level of comfort. The water heating is supported by solar collectors.
Düsseldorf-Quellenbusch - “Living with children”
This housing estate is situated in the attractive new residential area "Am Quellenbusch" and was implemented by the non-profit association "Living with Children". The families involved have founded a private building cooperative and planned and built 27 owner-occupied dwellings in rows of buildings facing each other. There is also a community center including a common room with kitchen, a music room and an activity room only for youngsters. All parts of these buildings have been built in the passive house standard and are heated by a central wood pellet heating system, supported by a solar thermal system. Most roof areas are planted extensively. On parts of the green roof, a photovoltaic system with 40 kWp has been installed.
Essen, Dilldorfer Höhe - Upscale rented houses and flats
Beautifully situated above the Baldeneysee, Allbau AG created 68 rental apartments between 2011 and 2013. The semi-detached, row- and apartment buildings were partly built as passive houses and partly as three-liter houses, each with ventilation systems with heat recovery.
Heating and hot water is provided partly through heat pumps and partly on gas-fired condensing boilers. Solar thermal systems support the water heating, and PV systems ensure further CO2 savings.
Gelsenkirchen - Public housing in passive house standard
A private investor in Gelsenkirchen showed that the passive house standard can be implemented in publicly-assistedhousing. 56 apartments were constructed in four apartment buildings. The apartments are equipped with decentralized ventilation systems with heat recovery. They are heated by gas condensing boilers with solar thermal support. The water is heated decentralized in the apartments, and photovoltaic systems with an output of 50 kWp also reduce CO2 emissions.
Hattingen-Südstadt - District Renovation
The Hattinger Wohnungsgesellschaft hwg eG has modernized a larger district in the southern part of the city. Seven rows of buildings were developed as a climate protection estate. The original number of 75 apartments dating from the 1950s has been expanded to a total 82 apartments by means of converting the attics.
By installing a very good thermal insulation and central ventilation systems with heat recovery the heating demand could be reduced by about 85 % to
20 kWh/m²a (previously approximately 120-140 kWh/m²a). For heating and hot water supply central gas condensing boilers were installed.
Hürth - More than 300 flats in passive house standard
One of the largest passive houses was built in Hürth, near the outskirts of Cologne. Aimed primarily at students, it comprises 312 apartments. If required, these can be connected to form larger units. Over all, 10,000 m² of high-quality living space has been erected. The apartments are equipped with ventilation systems with heat recovery. The air is preheated with ground heat exchangers.
Heating and hot water is supplied via district heating supported by solar thermal systems. The apartments were sold individually and are partly rented out.
Köln-Porz - Apartment buildings with ice storage
In Köln-Porz a particularly innovative technology is used for heating and hot water for 112 flats. The Vivawest Wohnen GmbH has equipped four apartment buildings with a large underground ice storage. It is 1,200 m³ in size and filled with water. In the heating season, the heat is extracted by a heat pump until the water is frozen. In summer, the water is then thawed and heated using a large solar absorber.
Münster - Flats with large solar storage
In this passive house 90 % of the heat demand for heating and hot water are produced by the sun. This is achieved by a solar thermal plant with 350 m² collector area and a solar storage tank with a volume of 50,000 liters. To cover peak loads a heat pump is available. All 34 apartments are equipped with decentralized ventilation systems with heat recovery and a fresh water station for hot water. This settlement was built between spring 2011 and summer 2012.
Siegen - Renovation
The fact that climate protection estates can also be realized in renovation projects was demonstrated by the Wohnstättengenossenschaft Siegen eG. From early 2013 to mid 2015 it modernized 80 apartments and added further eight through attic conversion. Through a high-quality, 16 cm-thick insulation as well as ventilation systems with heat recovery the heating requirements could be reduced significantly. The heat supply was changed to brine-water heat pumps and cogeneration for hot water supply. The photovoltaic systems will deliver an output of 62 kWp.
Troisdorf-Mitte - Owner-occupied dwellings in the city
In the center ofTroisdorf, on an urban fallow ground a developer has built about 60 high-quality owner-occupied dwellings in multi-family houses.
All apartments and the underground garage have barrier-free access.
Forthe supply of heating and hot water geothermal pipes and heat pumps have been installed. The rooms are heated by underfloor heating.
Wuppertal, Malerstraße - Building and Living Together
A private building-cooperative of 20 families, couples and singles has built a climate protection estate in the district Wuppertal-Nordstadt. In a vacant lot a passive house with up to six storeys has been built, which includes private apartments, two commercial units and an apartment for guests. For joint utilization, a common room, a garden, two roof terraces and a bicycle storage room are available. The heat supply is environmentally-friendly with a wood pellet heating and a large solar energy system with 42 m² vacuum tube collectors.
Dipl.-Ing. Andreas Gries
Leiter Themengebiet Wärme, Gebäude / Leiter Netzwerk Energieeffizientes und solares Bauen
Dipl.-Ing. Gabi Siedentop
Themengebiet Wärme, Gebäude
Sie erreichen die EnergieAgentur.NRW außerdem werktags von 8 bis 18 Uhr über die Hotline unter 0211 - 8371930.