ENERGY EFFICIENT VENTILATION OF OFFICE BUILDINGS
Prof. Brian Cody
This research project deals with the following questions:
- How energy efficient is mechanical ventilation in office buildings compared to normal window ventilation?
- Are the planning characteristics of the mechanical ventilation systems commonly used in office buildings today reasonable?
- If openable windows are provided in an office building, is additional mechanical ventilation necessary under extreme outdoor air conditions, or how economical or ecological is it to provide such ventilation?
- If mechanical ventilation is provided for extreme outside air conditions, how economical or ecological is it to provide additional window ventilation, which may have to be elaborately designed due to wind or noise problems with double facades, automatic control, etc.?
- Are there solutions in the form of hybrid systems which combine the advantages of both systems (window ventilation, controlled ventilation) in one system?
- Which requirements would have to be met by such a hybrid system and what could such a system look like? It has been shown, among other things, that mechanical ventilation systems with heat recovery, as they are installed in many European countries with the background of energy saving, are often energetically not useful, because the saved heat energy is more than compensated by the additional expenditure of electrical energy. Furthermore, solutions for natural ventilation systems for very high or very low buildings as well as for hybrid systems, which combine the advantages of mechanical and natural ventilation in one system, were discussed.
Duration
January 2005 - December 2005
Publications
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.
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