Ventilation Technology

Simulation-assisted automation for building energy optimisation

The project partners simulate the optimisation of a building's operation with the aim of reducing the energy used for climatisation. The methods developed facilitate a reduction of energy used for operation of the building by up to 30% through systems and building simulation. Further, development and testing of a process for predictive building component activation was successful.

Summary

Depending on the weather and the season, different requirements need to be met by the interior climate in buildings. Corresponding systems allow the interior climate to be adapted compared to the current weather situation. However, manual adjustment by users presents the drawback that the occurrence of certain weather phenomena precludes the advance notice required for timely compensation.
The project's aim was to optimise the energy consumption during general operation of industrial, administrative and public buildings. There is at present in this sector a lack of system integration and intelligent operation controls for optimum interplay of the components. One solution here are simulation models such as are used, for example, for automated plant monitoring and optimised control.

Results:

  • A system for building cooling through active night-time ventilation existing at the laboratory stage was developed to series maturity. The building management system facilitates adaptation to different modes of employment and application of load to individual zones.
  • Using the methods developed, system and building simulation can reduce, in some cases, the energy consumption of building operation by more than 30%.
  • The process developed for predictive building component activation was tested successfully and reduces the electricity required for ventilation by almost 40%.
  • In regard to daylight exploitation and artificial lighting, a measurement concept was developed that allows detailed evaluation of user behaviour and system functionality. Here, the controls are designed so as to facilitate maximum exploitation of daylight while maintaining constant glare protection.
  • For thermal analysis of facade systems, a test rig for sunlight simulation was developed. The rig's lamp field displays a radiation homogeneity of +/-10%; this is sufficient for calorimetric g-value determination.

Promotion

Promoting Institutions

Federal Ministry of Education and Research (BMBF)

Promotional Program

Klimazwei

More Project Information

Project title: Verbundprojekt: Gebäudetechnik - Simulationsgestützte Automation für die nachhaltige sommerliche Klimatisierung von Gebäuden

Project number: 01LS05064, 01LS05065

Project period: 2006 - 2009

Project region: Germany (Baden-Württemberg)

Project contact:

Herr Prof. Dipl.-Ing. Bollin

+49 (0)781 / 205-126

Frau Prof. Dr. Eicker

+49 (0)711 / 8926 2831
+49 (0)711 / 8926 2698

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Source: German National Library of Science and Technology Hannover (TIB)