Sustainable by design 2050

An initiative of the UIA

Velux model home 2020

Activehouse

Sapienza_Universit___di_Roma

Architekturclips

CONTEXTUAL NEW URBAN QUARTER aka Government Quarter

CONTEXTUAL NEW URBAN QUARTER aka Government Quarter
CONTEXTUAL NEW URBAN QUARTER aka Government Quarter
CONTEXTUAL NEW URBAN QUARTER aka Government Quarter
CONTEXTUAL NEW URBAN QUARTER aka Government Quarter
CONTEXTUAL NEW URBAN QUARTER aka Government Quarter
Architect
PETER JANESCH & TEAM 0708
Engineers/Specialists
ERTSEY, Attila & KÖR Ltd., KIPTERV TMT Ltd., BARTAL & RABB Ltd., FŐMTERV cPlc.
Location
Middle East and Eastern Europe - Hungary - Budapest
Climate Zone
temperate
Design status
project
Date of completion
2008
Type
Mixed use
Site area (m²)
175000
Footprint (m²)
95000
GFA (m²)
475000
NFA (m²)
343000
NFA/GFA
0.722
Density
2.714
Gross Volume (GV) (m³)
2140000
Building Costs
470000000 EUR
Building Costs / m² GFA
989.474
Building Costs / m² NFA
1370.262
Building Costs / m³ GV
219.626
Cooling / Heating-System

Ground loops under the building and heat pumps In order to meet heating demands we plan to install a heat pump system which co-operates with the ground loops to be installed under the foundation of the building complex. Based on preliminary hydro-geologic drills, the installation depth of the loops will be between 125-150 m, in a 7 x 7 m grid. Total expected number of loops between 500-550. The output of the built-in heat pump system can cover 93% of the peak heating demand (4.8 MW) and 33% of the peak cooling demand (9.5 MW). In terms of the annual operation of the building, the heat pump system can cover 100% of the heating energy consumption and 50% of the cooling energy consumption. The temperature of the produced water is 38 / 33 Cº in winter mode and 13/18 Cº in summer mode.

Use of renewable ressources - low tech
natural cross ventilation, evapoartive cooling, solar chimneys, use of high thermal mass, others
Use of renewable ressources - high tech
photovoltaics, heating pump, geothermal energy use, energy pile systems, energy storage, thermal building mass activation, other
Renewable, recycled, recyclable and innovative materials

C E L L U L A R I N T E R W O V E N S T R U C T U R E
With cellular construction, the linear, one-dimensional column is replaced by the two-dimensional wall. In the quest for elimination of all unnecessary weight from the structures, full utilization of new building materials of high strength and uniformity has become a problem. Structural elements are now reduced to critical cross-sectional areas; and instead of strength, elastic stability (i.e. the over-all or local buckling of the members) becomes the controlling factor in design.
E n g i n e e r i n g e f f i c i e n c y / T h e r m a l c o m f o r t
The internal gypsum layer is advantageous against vapour attacks and has a very good irradiation factor.
A l i g h t w e i g h t s t r u c t u r e
An extremely low weight/volume value of about 80-200 kg/m3 results from the cellular way of construction. Given its monolithic character, it is the best solution against earthquakes.
P C M
PCM wall plaster Plastic "plaster" applied to the wall structure, in which phase changing materials (PCMs) are used. These micro-capsules liquefy after absorbing heat when the ambient temperature rises and they solidify after losing the amount of "stored" heat when the ambient temperature falls. By using PCMs on the inner wall surfaces, cooling needs from internal heat load decrease by 10%. This way the consumption of primary energy sources and the emission of CO2 can be reduced.

Key Sustainability aspects
public spaces, accessability for disabled, renewable building materials, recycling and reuse, ecological building materials, integrated planning process, low cost design, use of innovative design tools
Sustainability rated
No
Social and ethical responsibility

Our goal was to turn a symbol of power into an exemplary model of common sense, responsibility and sustainability. Integrated concepts of energy, architecture and urbanism make the project a mind-changing example for a whole nation, providing clear, long-term benefits for the community. Publishing the project in detail on the internet gives democratic access to information and accountability.

Ressource efficiency and environmental impact

A sustainable energy concept is applied to the whole governmental building. Heat pumps cover 100% of heating and 50% of cooling energy needed. The rest is provided by water from the Danube. Wall heating and cooling is combined with extreme thermal insulation using innovative materials. Direct heat impact is eliminated by plants on the facade and full shading of the windows, reducing cooling needs. Natural light drastically reduces electricity consumption. By using green electricity, the building fulfils zero emission requirements. Warm water comes from solar vacuum tubes and PV panels. Rainwater gets collected, a split wastewater management and water saving appliances are used. Selective waste management is carried out on the spot. A similar concept is proposed for the connected urban area.

Economic lifecycle perfomance

The whole project is about cutting costs of governmental work by pulling together the offices and providing them with a better infrastructure. The relatively high cost of construction is balanced by cheap operation and sustainable economical prosperity of the adjacent urban areas. This way the intervention becomes a long-term investment which will not devaluate anytime soon.

Contextual performance and impact

Contextual concerns play a major role in the project. Exploiting the energy coming from the emergence of such a large and important building, an extensive urban rehabilitation is planned in order to get prepared for the inevitable changes coming. The governmental building introduces a new aesthetic quality in Budapest and is set into a framework of three equally radical interventions: covering the rails with a huge public park, reconstructing the square in front of the station and renewing a 25-block urban area across the street from the new building. Urban structure is regarded here as a mechanism that has to work properly and fulfill the needs of inhabitants. Hence the first three stories of the building contain public functions and are subsequently open for walk-through.