4 eu best practices a141428

KRONSBERG, HANNOVER GERMANY

MOHD AZMAN BIN SAMER A141428NURUL AMERA BINTI NAZMAN A141565FAUZIAH BINTI YAMAY A140013

Hannover in Europe

Introduction

• Model for the sustainable urban development

• Kronsberg is a new eco-district in Hannover built on 1200 hectares of mainly agricultural land at the city margins.

• The district is located in the South-East of the city and represented the last remaining area in Hannover suitable for a large-scale building project.

• Kronsberg is close to the countryside, yet enjoying all the advantages offered by an urban neighborhood: excellent transport connections, jobs, cultural, commercial and leisure centers and facilities.

Hannover – City of Garden• Around 50% of the city area is green space, making a major contribution

to the quality of urban life.

• Many parks and garden

• A good place to live

• Culture

• Environment

• Urban lifestyle

• Amenities

THE PROJECT

• The 32 terraced houses in Hannover Kronsberg are arranged in four rows with eight houses each row. This arrangement offers the advantage of reduced envelope surface area to volume ratio. The houses are type buildings which are available in three sizes with 79, 97, and 120 m^2 floor area respectively.

• Overall concept enforced through clauses in land sale contract and planning permission contract. Approximate 50% subsidies housing.

• 2700 units in 3-5storey apartment houses.

• 300 2-storey private terraced houses

PASSIVE HOUSE STANDARD• The super insulated houses with mechanical ventilation and heat recovery

proofed to provide high thermal comfort with extreme low specific heat energy consumption of about 15 kWh/ (m^2a). This is an energy conservation of about 75% compared to conventional buildings.

• The main intention of this project was to show, that heat supply in passive houses can be realized by warming up the supply air of the balanced ventilation system. So these houses have no conventional heating system with radiators, except one in the bathroom

Construction

• Wall and roofs are made of light-wooden construction. The core of building of the building, the cross-walls and end-walls are made of prefabricated concrete element.

• This modular allow cost reduction, so it was possible to achieve pure building costs that are as low as for conventional building.

Green space Concept

• Landscaping of semi-natural school playground

Grass Roof

• Minimizing built-up areas

• Remarkable positive commitment planners.

Semi-Natural Rainwater Infiltration

• Construction of 11 km of infiltration trench system

• Copes with all street rainwater run-off, even cloudbursts.

N n

ENERGY

• All the built structure were to meet Low Energy House Standard (LEH).

• This was possible only when the design had a compact building form with few projections and recessions.

• This was possible through

thicker insulation layers of walls

airtight and windproof building envelopes

avoidance of thermal bridges

installation of very well insulations windows.

Energy Efficiency Optimization at Kronsberg

ENVIRONMENT ECOLOGICAL STANDARDS ENERGY

Solar district heating system

Passive solar houses : Passive solar houses in the project use heat exchangers to meet their heating needs. One of the CHP plants is run by fuel cells, and was a demonstration project for the Exposition.

Wind turbines : Two wind turbines provide 3,000 dwellings with electricity.

Photovoltaic cell technology.

SOLAR CITY

• Decentral cogeneration heating plant

• Compulsory connection to the network

• Only 5% more expensive than

new-build developments with

district heating connections elsewhere

in the city

DISTRICT HEATING

• The most important renewable energy source on Kronsberg is wind power.

• Tow large and one smaller wind turbines to provide enough energy for 3,000 houses

WIND ENERGY

TRANSPORTATION &

CONNECTIVITY

TRAM – S Bahn Hannover• A new direct light rail transit service links the settlement with the city

centre (17 minutes).

• Three tram stops serve Kronsberg, each within easy walking distance of all homes, and providing a fast service to Hanover city centre.

• The transport systems has been specially designed to enable disabled access.

TRAFFIC CALMING

• In the residential area the car access is forbidden, except for Kronsbergresidents. Narrow sections on the roads, 30 kph zones, and priority tothe right at junctions, are effective traffic calming measures.

PARKING SPACE

• Car parking spaces are mainly arranged in small areas, either set intothe hill-side or at ground level.

• To reduce the parking space needs in the inner courts, a parking spaceratio of 0.8 per apartment was set at Kronsberg.

• This was compensated for by a 0.2 increase in the ratio for parkingspaces on the public streets, which means that they are better usedover the day, and the area needed for motorised access in built-upareas is reduced.

CYCLE PRIORITY LAYOUT

“City of Gardens”

• Providing places for people to live in an environmentally-friendly way

• 50% of the area is greenspace

HOUSING AND BUILT ENVIRONMENT

• 80% of the building land owned by the city.

• Concept enforced through clauses in land sale contracts and planning permission contracts.

• 50% subsidised housing.

• 2,700 units of 3-5 storey apartments houses.

• 300 of 2-storey private terrace houses.

WATER CONCEPT“Natural water balanced retained”

SEMI-NATURAL RAINWATER INFILTRATION

• Construction of 11km of infiltration trench systems known as Mulden-Rigolen

• Copes with all street rainwater run-ff, even coldbursts.

PONDS

• Water as design element in the courtyards.

• Diverse planning and landscapping solutions.

• Infiltration and evaporation.

WASTE CONCEPT“Home Composting”

HOUSEHOLD WASTE

• Pre-sorting

• 30% reduction in waste volumes: 154kg/household

CONSTRUCTION WASTE

• Preventive waste management planning on building sites

• 86% pre-sorting of waste and recyclables

GREEN SPACE CONCEPT“retaining & enhancing a unique landscape on the city margins”

• Landscaping of semi-natural school playgrounds

• Well-designed green inner courts with enjoyable water features

• Extensive games and sports park for individual use