Based on global warming, decline of existing energy resources, exponential population growth, increasing geopolitical instabilities which are the result of uncertainty of the future energy supply, together with the fact that buildings represent about 40% of total energy consumption worldwide leads to a conclusion that a good architecture is not possible without a good energy concept.


    The buildings represent the bigger part of one of the biggest problem of our society - fair distribution of available resources. Therefore architecture can be a big part of the solution. Never before in the history of our civilization architecture had such a chance to gain one of the central roles in the society. Good architecture is always representing the expression of the cultural values, priorities and hopes of a society. Now it can produce a physical response for the existential challenges.


    A sustainable development by definition cannot get along with the decay in architectural quality of our built environment. A building with low architectural quality and good energy concept is not an actual benefit for a sustainable future. The objective of research and teaching at the Institute is the maximization of energy performance of buildings and cities, and the development of architectural and urban projects through form and structure optimization toward energy efficiency.

  • TEAM

    Head of the Institute

    Brian Cody



    consultation-hour - wednesday 11:00 - 12:00


    Project Assistant/Lector

    Sebastian Sautter



    Martin Schneebacher


    Student assistant


    Office hours

    Monday - Friday, 09:00 - 12:00



    Aleksandar Tepavcevic

    consultation-hour - friday 11:00 - 12:00



    Alexandru Dan


    Student assistant



    Christiane Wermke



    Minoru Suzkuki


    Student assistant



 / E

Energy efficient ventilation of office buildings

Prof. Brian Cody






Fields of reference

Building Performance



This project focuses on the following research questions: How energy efficient is mechanical ventilation in office buildings compared to a conventional window ventilation? Are the planning characteristics being used for mechanical ventilation system reasonable? If openable windows are planned in an office building, is an additional mechanical ventilation required in case of extreme outdoor air conditions and how economic or ecologic is to provide one? if a mechanical ventilation is provided for the implementation in case of extreme outdoor air conditions, how economic and ecologic is it, to provide additional window ventilation, which potentially due to wind and acoustic problems have to be constructed costly with a double-faade, automatic control etc. Are there any solutions in the form of hybrid systems, what advantages of both systems (window ventilation, mechanical ventilation) can possibly be merged? what would be the requirements for such a hybrid system and what could it look like? It has been proved that mechanical ventilation with heat recovery, like they are being built in many European countries in the context of saving energy, are often not very reasonable in terms of energy as the saved (heating) energy is being compensated by the amount of additional electrical energy. Moreover solutions for systems with natural ventilation of very high and very deep buildings respectively as well as hybrid systems which combine the benefits of mechanical and natural ventilation in one system discussed.



January 2005 - December 2005



Cody, B.: „Energieeffiziente Lüftung von Bürogebäuden - Teil 1“, in: HLH Fachzeitschrift,, Verein Deutscher Ingenieure, Springer-VDI-Verlag, Düsseldorf, November 2005.


Cody, B.: „Energieeffiziente Lüftung von Bürogebäuden - Teil 2“, in: HLH Fachzeitschrift, Verein Deutscher Ingenieure, Springer-VDI-Verlag, Düsseldorf, Dezember 2005.



More info: tug online

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