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Landeshauptstadt Kiel

Dr. Gabriele Husmann, Head of EU-Coordination
Fleethörn 9, 24103 Kiel, Germany
Phone: +49 431-901-1106 Fax: +49 431-901-62745

18.10.2008 - Kiel/Germany
Innovative Bauausstellung InBA Kiel 2008 was a complete success“
„Innovative Bauausstellung InBA was a complete success“ was the title of the article in newspaper "Kieler Nachrichten" on 18.10.2008. And federal state capital Kiel could not agree more on this. The development process of InBA had given the city many important impulses, which became obvious during the exhibition runtime and numerous events.
From 5th till 28th of September 2008 Kiel, as the city of climate protection, laid the main emphasis on energy saving construction: Innovative Bauausstellung (InBA)® Kiel 2008 provided insight in sustainable construction – from practical experience for practical experience.
During three exhibition weeks 20 InBA projects could be visited.
Buildings of all kinds, such as new and refurbished buildings, dwelling houses, commercial, public and special construction exemplary show, how construction can be become more sustainable with help of energy efficiency and usage of renewable energies.

Thanks to participation of engaged builder-owners, who modernized or new constructed their buildings according to high energy standards this and last year, there was developed a fine composition of innovative buildings: apartment buildings, terraced houses, apartments, a consumer market, a sports hall and a multifunctional building. All in all 28 accommodation units were refurbished, 160 accommodation units and about 15.000 m² of useful area as commercial and office area were newly built.

It is noteworthy that many of these projects were considerably more energy optimized than it was originally planned. Among these there is newly constructed Famila department store Kiel-Wik, the science centre Kiel, sports hall Schilksee, the energetical refurbishment projects in the streets Bräutigamweg and Kanalstraße.
When the decision for InBA was made by council board in 2006, increasing energy prices and consequences of climate change were not such important issues for many people as they are today. The 1st Kiel Climate Day in the city hall of Kiel in the beginning of 2008 demonstrated with help of over 1000 visitors the rising interest of citizens, who informed themselves on such issues as energy efficiency, energy saving and renewable energies.

The InBA concept of consulting, professional events and “projects-to-touch” were well received. During over 60 events, excursions and guided tours the interested visitors had the possibility to ask questions, receive technological explanations and experience energy saving construction. Over 2.500 national and international visitors took advantage of these offers.

The opening ceremony in café Engelchen in the shopping centre Sophienhof attracted over 150 guests. On the occasion of the World Children’s Day participation activities for children and their parents took place on various stands in Sophienhof. Beside tinkering with environment friendly materials the issue of energy was accessible to children. Children, parents and organization were very excited. The experts’ forums „Sanieren & Sparen“ (refurbish and save) und „Best-practice-objects“ presented InBA projects with speeches. The projects could be visited on site later.

Central InBA information stand in the central shopping centre of Kiel, “Sophienhof”, was received particularly well. There energy consultants from Kiel were available for questions of actual and aspiring house owners every afternoon.

The 5th Kiel Solar Days took place together with InBA. In „Sophienhof“ took place presentation of Kiel enterprises, which belong to craftsmen association „Fair-Play-Wärme“ (fair-play-warmth), union of members of the trade association „Sanitär-Heizung-Klima“ (sanitary plumbing – heating –climate), as well as further guilds and handicraft enterprises with their projects. The approved fair of Kiel handicraft was supplemented by firms and products from the sphere of energy saving construction on the occasion of InBA 2008. Many thousands of discussions, consultations and first contacts provided for even more attention towards energy efficient construction.
As first from the eight partner cities, the federal state capital Kiel conducted the largest building exhibition within the framework of the EU project REBECEE. The incentives, provided by InBA to the city, have further effect and they were actively picked up in order to use the momentum of InBA and make Kiel more environment friendly.

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The Innovative Building Exhibition (InBa) Kiel 2008 features new and modernized building projects employing high energy efficiency standards and the use of renewable energy with the goal being a CO2-neutral heat supply. Resulting cost benefit comparisons will demonstrate the immediate transferability of the methods and systems used in these buildings for future project. The exhibition buildings will demonstrate, how energy-saving and resources-conservation concepts can be planned and realized in urban areas.

The Innovative Building Exhibition Kiel 2008 will take place in September 2008 and different buildings will present: New Build Living, Modernized Living, Public Buildings, Commercial Buildings and Special Uses.

An open procedure is to attract investors, housing enterprises, builders, house manufacturers, architects and engineers to bring in suitable projects. The InBA Kiel 2008 provides the following advantages to the participants:

  • Extended technical training in the form of seminars and workshops.
  • Quality assurance of all participating projects
  • Advertising and marketing opportunities for market partners of all industries.

The new building projects must meet the KfW Energy Saving House 40-Standard (the Passive House standard is favoured). All projects must prove the final airtightness of the building envelope with a “Blower Door” test.
Modernization projects must achieve the new construction standard of the EnEV of 2.12.2004.

The use of renewable energy and/or district cogeneration heat must provide for the majority of heating demand (space and water heating) up to 100%. The use of a variety of energy supply solutions (e.g. fermentation gas, wood pellets with Solarthermie or terrestrial heat, Photovoltaik) is possible and participants can choose them freely.
For projects deviating from these guildelines appropriate reference values are to be set in accordance with EnEV 2004.

Living and Working at Rathausturm


Ecological and social multigenerational dwelling project „Living and Working at Rathausturm“ („Wohnen und Arbeiten am Rathausturm“) in Rathausstraße, which is in the construction phase at the moment will be perfomed according to the KfW40-House standards. The energy supply will be secured by community heating; the usage of photovoltaic will be aimed at. The location in the city centre offers also to those without a car or with limited mobility short routes to authority offices, cultural facilities and shopping possibilities.

New build apartment block "Gerhardschule"


Attractive modern building design with interesting floor plans, house with 19 freehold apartments is built in conventional massive construction way.
All the apartments are orientated to the south or west and have got a terrace, a balcony or a roof terrace in stacked storey. Two elevator systems, which run from cellar or underground garage to stacked storey, are located in the building, so that all the apartments can be reached without using the stairs.
A cellar room belongs to every apartment and, if required, a parking lot in the underground garage.
All the apartments are provided with built-in kitchen, high-quality tiling in bathroom and kitchen, ingrain wallpaper as well as carpeting; parquet floor is planned in living room as a standard feature.
Besides, all the apartments receive underfloor heating.
The project will have KfW 40-standard. The energy supply for heat and warm water will be secured by district heating.

New residential area "Alte Gärtnerei" / Steenbeker Weg / Projensdorf


Over 80 housing projects are constructed by Ing.Haus in the construction area in Kiel-Projensdorf at Steenbeker Weg. There are detached and semi-detached, as well as terraced houses with cellar and corner houses.
The buildings are created in massive construction method with plaster and facing stones.
All the buildings have two storeys with additionally extended or extendable attic floor. The house type Tetra X is provided with a guest bathroom. The cellar has got about 40m² of floor space. Interior paintwork, carpeting, tiling, built-in kitchen and outdoor garden are on one’s own account.
Paving of the parking space, access paths and terrace, as well as top soil cover belong to basic lay-out.
The attic floor is fully developed. The building has got 5 rooms, as well as sufficient storeroom and, moreover, a large roof terrace.
Local heat for hot water and heating from a communal heating power station, which is run by rapeseed oil. Solar panels or controlled ventilation system with waste heat recovery for domestic water heating is also possible at extra cost.

Modernisation of twelve flats in Bräutigamweg

One further project will be modernisation of twelve flats in Bräutigamweg of the residential area construction company Hermann und Paul Frank mbH & Co. KG. Within the framework of this project, the whole casing of the building will be wrapped in heat insulation, the heating unit will be renewed and solar thermal unit for warm water supply will installed on the roof. The comprehensive modernization also includes installation of a ventilation unit with heat recovery in order to reduce ventilation heat losses in the flats.

Refurbishment Kanalstraße

Solid building of brickwork and mansard roof and wood beam ceiling built in 1913 has got 460 m2 living space after reconstruction.
Prominent, elevated position on Nord-Ostsee-Kanal, creates nice living space orientated to the south with view to the canal.
Apartments with 3-4 rooms have got ceiling height of ca. 3,0 m, the modernisation includes installation of new baths, new larger balconies and high-quality front garden design.

• Replacement of oil heating installation, radiators and decentralized electrical hot water preparation
• Insulation and waterproofing of the entire building envelope, prevention/ reduction of thermal bridges
• Installation of heating system as heat pump air/ water when the garden is accessible eventually brine / water (geothermy), installation of wall surface heating with max- 40° supply temperature.
• high quality insulated pipelines, efficient electrically regulated pumps, hydr. balancing
• Installation of controlled ventilation system with at least 90 % waste heat recovery, usage of waste heat for domestic water heating or brine feed-in
• Solar recovery through large, south orientated windows
• Support of drinking water heating by thermal solar system
• Support of power supply (heat pump) by photovoltaic system (thus almost completely CO²- neutral!)
• Installation of passive house components (windows, roof insulation, ventilation systems, solar systems)

Energy standard before:
Required annual heat consumption 123,40 kWh/m²a
Primary energy demand 516,03 kWh/m²a

Energy standard afterwards:
Required annual heat consumption 28,84 kWh/m²a (- 77 %) Primary energy demand 36,93 kWh/m²a (- 93 %)

Decrease in primary energy demand according to ENEV
by 55 %, CO²-saving 35 t per year.

Refurbishment and Modernisation Lantziusstrasse


Mid-terrace house/ small city mansion has got living space of 158m². This terraced house was built in residential area Kiel-Südfriedhof, in Lantziusstraße in 1936. It is a massive construction house with plaster facade. The goal of the refurbishment is to achieve the level that is 30% better then today’s minimum standard for new building according to EnEV.

Energy measures:
• exterior walls: 14 cm WDVS WLG 035
• roof area: 24 cm mineral wool WLG 035
• attic ceiling: 36 cm mineral wool WLG 035
• Window: Uw 1,12 W/(m²K) spume plastic profile
Uf = 0,9 W/(m²K) Glass Ug= 1,1 W/(m²K)
• cellar ceiling: 8 cm inside insulation LG 035
• solar panels for hot water preparation und heating support
• pellet oven for supply of heating and hot water
• Gas heating value thermo manually separately activatable for domestic water heating for temperatures under – 7° Celsius.

Attic storey and staircase to the garden are modernised.

Until now heating and hot water preparation was made by gas water heater.
The whole heating system is to be changed, so that 500l heating buffer storage and already existing 3001 hot water tank are supplied by pellet oven and tubular collectors / solar system (15,8 m²).
The gas water heater can by manually activated in case of very low outside temperatures in order to produce the required residual heat or to supply basic temperature in case of longer absence in winter.
Radiator valves and thermostats shall be adapted so, that control accuracy of 1 Kelvin could be achieved. Hydraulic balancing of the heating system shall be carried out according to calculation specifications.
Heat distribution system is to be insulated.

Refurbishment Hohenrade


The half of the semi-detached house was built in 1938 and before the modernisation had only uninsulated building envelope. The building volume is 732 m³ (floor space according to EnEV A: 234 m²).
Both apartments, one on the ground floor and one on the second floor, dispose of 87m².
The attic floor is not developed at the moment, however, it is planned to do. The house is has got cellar.
In order to preserve the exterior look of the house, the newly insulated facade was additionally clad with facing stones. Old windows were substituted by high-quality 3-layer-glazing.
The modernisation included the following measures:
• insulation of the exterior surface with WDVS 120 mm + facing bricks
• insulation of the cellar ceiling with PUR 60 mm
• heat insulation window (U-Value: 0,8 W/m²K,
Glass U-Value 0,5 W/m²K)
The insulation measures were carried out in 2007.
Solar thermal system with the area of 10,5 m² serves for hot water preparation and heating backup. Pellet boiler is additionally planned.

Refurbishment Kronshagener Weg

It is a freestanding residential building built in 1925 with uninsulated building envelope.
Due to artistic reasons exterior insulation is impossible and not desired by the owner.
Modernisation measures:
Internal insulation of exterior walls with renewable materials (hemp) 60mm, insulation of the top storey ceiling with renewable materials (hemp) 270 mm,
new thermo-windows (U-value: 1,21 / U-value Glass: 1,1 W/m²K).
Solar thermal system with 20m² of collector area and 2000 litre buffer storage are used for hot water preparation and heating backup.
It is planned to install pellet-boiler for support (alternative: gas heating value). In order to achieve high solar heating proportion, hypothermal-wall–heating system shall be installed.
It is large scale banding heating with comparatively low outgoing temperature.



Science Centre Kiel is the focal point of the science park that is located on former industrial site near the university.
Central goal of the project is the optimization of research and knowledge transfer between innovative companies and science.
The Centre is divided into management, cooperation and presentation sectors. In the management sector central services for innovation promotion and technology transfer are provided.
The cooperation sector, as the core of the Centre, offers areas for firms that work on research and development projects in cooperation with universities.
Presentation area in the ground floor provides numerous offers for conferences, lectures and exhibitions.
The building leads the ambient space into the building by its expressive projection and transparency. It opens up, invites and forms a room entity of forecourt, foyer and public usage of the ground floor.
Wide projection, powerful slightly sloped concrete pillars and views into the building form the character of the building and symbolize the objective of the Science Centre as innovative, modern meeting and work place in contemporary architecture language.
Due to its almost cubic shape the structure has got very fortunate A/V- proportion, so that the envelope area is minimized. Exterior walls of the house consist on the one hand of closed surface with ferroconcrete walls and decorative tile brickwork, on the other hand of post-and-rail-facade with highly insulated sections with heat-absorbing glass, light guiding glasses and vacuum insulation panels. Photo-voltaic system from standard units with crystalline cells is planned, that shall be composed together to large-area sloped „sun sails“ and installed on flat roof with steel substructure.

total area: ca. 180 m2
total output: ca. 25 kWp
energy output: ca. 21.000 kWh per year

Heat supply for heating of the building takes place through connection to district heating network of public services Kiel, with combined heat and power generation.

Sports hall Schilksee


A special project is the sports hall Schilksee, which has got KfW energy saving house 40 standard. Wood-pellet heating shall be used for of heating and drinking warm water supply in the sports hall. Suitable for a passive house ventilation unit with heat recovery provides for humidity removal in secondary rooms and good quality of compartment air in the hall. The roof can be used for photovoltaic units of external users, the necessary chutes will be hold out.

famila Warehouse Wik

New building of Famila department store in Kiel Wik with access from Prinz-Heinrich-Straße.
• in direction of parking lot partially two-storied
• the planned construction method:
Ferroconcrete carcass with infill brickwork and trapeze tin roof, facade design with facing stones, curtain-type aluminium panels and post-and-rail-facade
• Energy saving due to raised insulation standard
• Development of office block in the upper floor as „passive house“
Usage of waste heat of frozen and refrigerator food compartments for heating of useful areas
• energy efficient illumination
• additionally required heat through the ground (geothermy)
• in summer cooling of useful area through the ground
• Ventilation system with highly efficient waste heat recovery, adaptation of air volume to current demand
• Installation of the photovoltaic system on the roof

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