Käferhaus, J (2004) Reactivation of Historic Natural Ventilation in the Hofburg, Vienna, with Proof of its Functioning by Measuring Campaign and Application of the Results in Schönbrunn Castle, Vienna. In: European Research on Cultural Heritage, State-of-the-Art Studies. ITAM, pp. 351-357. ISBN 80-86246-23-X

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Abstract

To reanimate a historic ventilation means to stick more to the old craftsmanship techniques in order to learn that we have to consider a building and the building services as a cybernetic system, instead of impose the services onto the building without integrating them. When using integrated building services with an effective, inert embedded wall heating system, the results for users and artefacts are evident: There will be a maximum of comfort with a minimum of investment and energy cost. Moreover the artefacts will be kept in optimal condition (preventive conservation). In cases where the usual “technoide” solution is applied regarding building services in the form of standard heating and air conditioning, a non-damaging micro-climate cannot be achieved. The reactivation of the natural ventilation in the historical building of the “Corps de Logis” (CdL) in the Vienna Hofburg shows, even after about 100 years, the effectiveness of this simple technology: An air inlet from a near-by park into a tunnel-labyrinth in the basement of the building compensates the outer ambient air temperature and humidity. From the basement, air is brought through stack by large air ducts into the showrooms. Any warm air from the showrooms will flow outside due to the difference in temperature. Otherwise ventilators keep this circle going. In Vienna’s Schloß Schönbrunn the air-exchange rate was more or less defined by the difference in air pressure on both sides of the building and the resultant air leakage of the gaps of the castle, or stack in the existing chimneys, or just by the staff opening the windows. In order to optimize the micro-climatic situation in the castle by using a controlled air exchange rate, a similar natural ventilation system is planned with stack or mechanical ventilation, which provokes the continued flowing of ambient air which will be let in through a tunnel-system embedded in the earth of the park in front of the castle. With this temperature-exchange system, the air conditioning could be reduced to a minimum. As a result of the controlled and filtered air flow, the micro-climate of the showrooms with their precious contents will be stabilized.

Item Type:	Book Section
Uncontrolled Keywords:	Natural ventilation; Preventive conservation; Radiant heating; Air conditioning; Historic building; Castle
Subjects:	English > Climate Control > Ventilation ?? heat ??
Depositing User:	Anna Samuelsson
Date Deposited:	08 May 2008 11:01
Last Modified:	03 Apr 2017 16:17
URI:	http://eprints.sparaochbevara.se/id/eprint/337

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