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EnEff:Campus: blueMAP TU Braunschweig

EnEff:Stadt - Forschung für die energieeffiziente Stadt

“Okerhochhaus” tower block and the “Altgebäude” building on the TU Braunschweig campus near the city centre

© TU Braunschweig (IGS)

Settlement summary

Project status Projektstatus: Phase 2Planning
Location of local community nordöstliches Stadtgebiet, Universitätsviertel: Nord-, Ost- und Zentralcampus, 38106 Braunschweig, Niedersachsen
Settlement in figures 192 km², 243,363 Einwohner (City of Braunschweig)
Developer, organizer TU Braunschweig
Settlement University campus
Utilisation type Institute and administration buildings
Area of the Main Campus, as of 2007 613.651 m²
Gross floor area as per DIN 277 449.247 m²
Usable floor area not used 24.583 m²
Living and communal areas 7.035 m²
Office area 64.304 m²
Production, experiments, work areas 73.699 m²
Storage, distribution and sales areas 36.014 m²
Training, teaching and cultural areas 54.709 m²
Health and care areas 212 m²
Other usable space 23.438 m²
Area for building services equipment 83.209 m²
Circulation areas, incl. emergency access routes 28.623 m²
Age structure Buildings of all ages represented (historic buildings from the 18/19th centuries, early 20th century, 1950s, functional buildings from the 1960s and 70s, new buildings)
State of construction and refurbishment Mixed – requires partial refurbishment
Heating system Heating network, district heating
Ownership structure Own use, rented
Project themes

Project description

The holistic, energy-oriented refurbishment of European cities is a key theme in implementing the energy turnaround in Germany. Using the city centre campus of the TU Braunschweig as an example, the intention is to develop and test exemplary planning and optimisation methods for improving the energy efficiency of urban districts. In order to document the requirements of scientific facilities in planning and developing innovative concepts, the plan is to double the various policy goals stipulated by the German government’s Energy Concept and 6th Energy Research Programme, for example, for reducing CO2 emissions until 2020. It is also intended to develop visions for supplying the campus with sustainable energy such as, for example, with a long-term supply of exclusively renewable energies until 2050. The research and development work is closely linked in all areas with the teaching.

For processing the entire spectrum of relevant issues in order to develop a holistic energy-based master plan, the TU Braunschweig has formed a research team comprising, among others, architects, town planners, mechanical engineers, electrical engineers and the TU building management team. The local energy supplier is also involved in the conceptual planning. In addition, the TU Braunschweig’s blueMAP campus project is closely linked with regional and national climate protection activities involving, for example, the 100% Renewable Energy Model Regions, the Lower Saxony Automotive Research Centre (NFF) and Volkswagen AG.

Integrated energy-based master plan

The TU Braunschweig campus is particularly suited for pilot projects: the university site includes a diverse range of typical university buildings with a large variety of ages and uses (lecture rooms, library, refectory, offices, laboratories, industrial sheds, administration, etc.). During the first phase of the project a holistic master plan will be developed for a sustainable and energy-based optimisation of the campus. For this purpose the existing building stock on the campus is being documented in terms of both the energy requirements and consumption as well as the urban design and mobility, and the results depicted in an energy register as a baseline for the further processing. The TUBS is one of the first universities in Germany to comprehensively record the building-specific energy consumption to a high temporal resolution and with classification of areas, uses and the future development of requirements. A centrally operated energy management system monitors and controls the building services equipment, which is largely integrated into the system using building control technology. The targeted installation of meters and measuring devices enables partial energy characteristic values to be determined in the buildings, which in turn supports the effective optimisation of the energy performance.

The structure and performance capability of the building management system also enables the TU Braunschweig campus to implement concepts developed in the research project for the energy-based refurbishment and long-term transformation of the energy provision. Based on the master plan, concrete measures will be realised from 2014 that will be optimised and secured through comprehensive monitoring.

Implementation-oriented planning phase 2020

Based on the 2020 Development Plan for the campus, a specific implementation plan is being developed in conjunction with the university management and other responsible institutions that takes into account all technical, financial and administrative implications. In addition, scenarios for the long-term prospects until 2050 will be depicted. The Vision 2050 provides the basis for the university’s permanent ”commitment” to a sustainable campus development.

Details on the age structure and building condition
  • 24 buildings up to 1915, partly listed as historic buildings
  • 24 buildings 1915-1948
  • 7 buildings 1949-1957, early post-war years
  • 38 buildings 1958-1968, DIN 4108 applies
  • 20 buildings 1969-1977, DIN 4108 + supplements
  • 5 buildings 1978-1983, 1st WSchV
  • 8 buildings 1984-1994, 2nd WSchV
  • 6 buildings 1995-2001, 3rd WSchV
  • 3 buildings 2002-2006, 1st EnEV
  • 2 buildings 2007-today, 2nd EnEV

Most of the buildings do not meet current technical standards.

The building envelopes have obvious thermal bridges as well as faults and damage; in most cases energy-based refurbishment is required (installation of thermal insulation, replacing the windows, etc.). The building services technology (e.g. ventilation systems) has largely reached the end of its service life or even exceeded it.

Assessment basis

In producing the integral master plan, tools and methods for processing complex issues and tasks are being developed and evaluated. These are designed to be adapted to the respective underlying conditions. The master plan is therefore an instrument that can be flexibly deployed and which can be further used once the project has been completed, for example in follow-up projects. The developed processes, tools and methods for energy-based improvements to buildings and urban districts include:

  • Structural- and building services-related planning tools and methods for calculating the economic feasibility and lifecycle costs
  • Guidelines for energy-efficient new-build schemes and refurbishments
  • Tools for the energy management and operational optimisation
  • Simulation model for depicting development and refurbishment scenarios
  • Service provider concepts (contracting, PPP, etc.)
  • Information and communication strategies
  • Development of funding models

The project is also collecting data on existing tools already used in the university sector and surveying the experiences in using them. The existing options and discernible deficits when using the methods and tools will then be identified and compared with the project’s own tools.

Multiplier effects for German universities

With the results of the "TU Braunschweig Campus Refurbishment" project, transferable results will also be available for other university locations. Together with the comprehensive data from HIS (Hochschul-Informations-System GmbH) on the existing German university stock, the data from the research project will be prepared in terms of project-specific themes and supplemented with specific additional surveys. In addition to the master plan for the Braunschweig pilot project, this will provide an overview of the energy-specific status of the German university landscape (2010) and a forecast for the development until 2020.