Ausführende Stelle:Technische Universität Hamburg - Maschinenbau - Institut für Thermofluiddynamik - Technische Thermodynamik

Laufzeit:12/2012 bis 12/2017

Bewilligte Summe:529.861 €

Förderkennzeichen:03ET1139A

Topics:

Construction of individual buildings, Heating, ventilation and cooling , Daylight & lighting, Building operation & automation, Heating & coolingnetworks, Biomass, Heat from soil, groundwater and sewage

Keywords:

IBA Hamburg

Excellent architecture with a sustainability certificate

The tower with the main entrance to Neuenfelder Strasse houses, together with the west wing (left) and north wing(right), the Hamburg Department for Urban Development and the Environment. The building is situated in the newheart of Wilhelmsburg.

03ET1139A

Localheat Award User

Block-type thermal powerstation

Groundheat Ventilation system

Quintessence

The new building for the Hamburg Department for Urban Development and the Environment, which was completed in 2013, forms part of theInternational Building Exhibition (IBA) in Hamburg. The exemplary building complex is designed to be energy-efficient, sustainable and at the sametime cost-effective. The scheme’s very compact form, with excellent thermal and solar protection and optimally transparent facades, is aimed atachieving a primary energy demand of only 60 kilowatt hours per square metre per year. The building is currently being scientifically monitored.

Project contextThe building design emerged from a competition held by Sprinkenhof GmbH from Hamburg as the developer in cooperation with IBA HamburgGmbH. The site is located in Hamburg-Wilhelmsburg and is a central component of the “New Central Wilhelmsburg” plan, which was created on thebasis of the “New Central Wilhelmsburg 2013plus Master Plan”. As a municipal service provider, Sprinkenhof GmbH has taken over the realisationof the project following the competition process. For the design phases as far as the planning application, the design partners were the winningconsortium from the competitive process comprising Sauerbruch Hutton Architects from Berlin and Innius RR GmbH from Rosbach (formerly R+RReuter Rührgartner Planungsgesellschaft für Gebäudetechnik mbH), while the Obermeyer Planen + Beraten GmbH structural engineering companywas responsible for realising the detailed planning.

Research focus

The new building will undergo intensive scientific monitoring during the first few years following the commissioning phase. A review of the energyefficiency criteria and the development of an optimisation concept are key objectives of the scientific monitoring. The parallel experiments on ademonstration system at the Institute of Thermo-Fluid Dynamics and Applied Thermodynamics at Hamburg University of Technology (TUHH) alsoenable concepts for needs-based air-conditioning to be developed and transferred to the new building on reaching maturity. Modelling the buildingenergy system enables the influence of different balance boundaries on the energy and emission characteristic values to be evaluated using actualmeasurement data.

A sub-project carried out by the solidar Planungswerkstatt office in Berlin is concerned with developing a sub-module for an “Energy & Comfort”user interaction system. In conjunction with the occupants, the intention is to identify energy cost savings and comfort improvements in the buildingoperation and implement them solely through measures not requiring capital investments.

Concept

Building concept

Almost 200 metres in length, the building meanders through the new urban district and, with its almost organic shape and striking colours, isintended to symbolise a new era in the south of Hamburg. The new-build scheme, which was completed in 2013, is also the largest constructionproject at IBA Hamburg! With thirteen storeys, the main tower of the curved new building is 54 metres in height. Two undulating, five-storey wingsextend outwards from the tower. Colourful bands made of ceramic panels are fixed to the dark aluminium facade elements: the twenty differentcolours give the building a striking patchwork appearance. At the same time the facade and glazing have excellent thermal protection.

A curved structure, which stands out with its flowing contours and colours, rests on a rectilinear plinth that defines the edge along NeuenfelderStrasse. The rhythmic pattern of the individual blocks on the plinth is continued in the interior spaces with sunlit atriums in each building section. Theatria provide the centre of each of the seven “blocks” that make up the two elongated, low-rise wings, and function as central spaces connecting alloffice floors. They divide the large office areas and provide lighting to the circulation spaces. The curved building contour results in a sequence ofdifferent spatial situations in which the wide, day-lit atriums alternate with the more enclosed, interior corridors. Each atrium is linked to a centralcore that contains the staircase, lift and ancillary spaces (sanitary rooms, plant rooms, storage space and archives). The corridors and cores arefurther differentiated through the use of colour. The offices are positioned around the core and atrium. The biaxial individual offices generally have awidth of 2.5 metres and a depth of 5.1 metres.

Consistent heat protection as well as optimised ratio between opaque and transparent facade areas

Building form and atria allow plenty of daylight

Building uses geothermal heat via foundation piles combined with heat pumps

Local heating from CHP plant is used for meeting peak loads and heating domestic hot water

User involvement via the interaction system to identify opportunities for savings and comfort improvements

In 2014, the building was awarded the Certificate in Gold from the German Sustainable Building Council (DGNB)

The west wing ofthe building on thesouthern forecourton Neuenfelder

Site plan showingthe exteriorlandscaping

Energy concept

The building envelope has consistent thermal protection as well as an optimised ratio between the opaque and transparent areas. The building shapeand atria enable considerable natural light to be used. Considerable indoor comfort with low energy requirements is ensured by the efficient heatrecovery used by the ventilation systems, the external solar shading, the differentiated ventilation concept with the option of night-time cooling viaair vents in the facade, as well as the heating and free cooling via thermally activated ceilings. In addition to the structural and building servicescomponents, the energy concept also relies on the active participation of the occupants in order to utilise the building’s energy savings potential asmuch as possible.

An essential part of the supply concept is the use of renewable geothermal heat available on the site via energy piles in the building’s foundationsand heat pumps. The electrical energy required to operate the heat pumps is procured as green electricity via the general electricity grid inaccordance with the City of Hamburg’s supply contract. To cover peak demand and domestic hot water heating, local heating produced fromrenewables is supplied by combined heat and power generation run by the municipal utility, Hamburg Energie GmbH.

Further images

The undulating

facade largely

consists of

aluminium

rainscreen

cladding

elements with

applied

coloured

ceramic panels.

The diverse

colours used for

the ceramic

elements range

from red-yellow

tones on the

tower to blue-

green-purple at

the ends of the

wings.

Initial sketch of

the building

complex

Floor plan of a

typical building

section. The five-

storey side wings

each have

internal, central

plant cores as

well as an atrium

and perimeter

offices.

Cross-section through the west

wing

Longitudinal section through the west wing Interior view of one of the

side wings with timber-

clad balustrades and spiral

staircase

An internal atrium is

situated in every building

section

Schematic depiction of the energy concept. The building-related energy systems are within the BSU’s “system limits”.

Schematic depiction of the energy flows

Further images

Schematic depiction of the

lighting concept for the

office and corridor area

Schematic

depiction of the

ventilation

concept for

summer operation

Schematic

depiction of the

ventilation

concept for winter

operation

View from above in the

heating centre showing

the supply and return

lines for the individual

heating circuits for the

tower

The central

ventilation system

for the tower

achieves a nominal

supply air flow of

about 32,000 cubic

metres per hour.

By means of concrete core

temperature control, two

electrically driven brine-

water heat pumps provide

warmth in winter and

support the building

cooling in summer.

Supplementary heating is

dispensed with.

Award

The building was awarded the Certificate in GOLD from the German Sustainable Building Council (DGNB) in the New Office and Administrative Buildings category with a score of 80.6%.

Project data

In July 2014, the new building for the Hamburg Department for Urban Development and the Environment (BSU) was awarded the Certificate in Gold from the German Sustainable Building Council

(DGNB).

Building data

Who is who?

Building owner, investor GGV Grundstücksgesellschaft Verwaltungsgebäude Neuenfelder Straße mbH, eine Tochtergesellschaft der Sprinkenhof AG

Operator Sprinkenhof AG

Occupant Behörde für Stadtentwicklung und Umwelt sowie Landesbetrieb Geoinformation und Vermessung

Building type Office building

Completion 04.2013

Inauguration 06.2013

Measures

Gross floor area 60.089 m²

Heated net floor area 46.557 m²

Gross volume 234.485 m³

Work places 1.444 Personen

Usable floor area (according to EnEV) 40.058 m²

A/V ratio 0,26 m²/m³

Energy indices according to German regulation EnEV

Neubau

Heating energy demand 45,90 kWh/m²a

Source energy for heating and domestic hot water (dhw) 27,10 kWh/m²a

Overall primary energy requirement 58,20 kWh/m²a

Energy data

Implementation costs

Last Update: 28. March 2017

Net construction costs (according to German DIN 276) relating to gross floor area (BGF, according to German DIN 277)

Construction (KG 300) 1.108 EUR/m²

Technical system (KG 400) 318 EUR/m²

These figures represent calculated costs

Contacts for theproject

Project research managementTU Hamburg-Harburg, Institut für Thermofluiddynamik, Technische Thermodynamiki