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Prof. Dr.-Ing. Schmidt, Michael

Energetic Inspections of HVAC-Systems – the German Perspective

Prof. Dr.-Ing. Schmidt, Michael

Chair for Heating and Air Conditioning Institute for Building Energy University of Stuttgart, Germany

Energetic inspections for air conditioning systems are legally mandatory in Germany. The idea behind these inspections is to identify reasonable measures to improve the energetic quality of the system. The energetic saving which would be possible with such measures on the basis of the inspections is in the order of 30 %. The saving potential related to the total final energy consumption of Germany or the EU is in the order of 10 ... 15 %. Case studies on existing buildings show that the above mentioned measures can be identified by means of an inspection that these measures can be taken at very low capital cost and that the savings can be achieved in the following operation of the building.

The Energy Performance of Buildings Directive (EPBD) from 2002 [1] requires for all member states of the European Union among other items a national legal framework for the energetic inspections of HVAC-Systems. According to the directive it is mandatory for the member states to have a national code for inspections.

The German “Energieeinsparverordnung - EnEV” [2] from 2009 is this German code. It is the German interpretation of all requirements from the European directive. One part of it is the German framework for the inspections.

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