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Monitoring of "Efficiency House Plus Standard" pilots

: Bergmann, Antje; Erhorn, Hans; Reiß, Johann; Beckert, Michael

Hauser, Gerd (Ed.); Lützkendorf, Thomas (Ed.); Essig, Natalie (Ed.) ; TU München; Karlsruhe Institute of Technology -KIT-; Fraunhofer-Institut für Bauphysik -IBP-, Stuttgart:
Implementing sustainability - barriers and chances. Book of full papers : April 24 - 26, 2013; SB 13 Munich
Stuttgart: Fraunhofer IRB Verlag, 2013
ISBN: 978-3-8167-8982-6 (E-Book)
Sustainable Building Conference (SB) <2013, Munich>
Conference Paper
Fraunhofer IBP ()

In the context of the promotional program "Pilot projects achieving Efficiency House Plus Standard" established by the Federal German Ministry of Transport, Building and Urban Development (BMVBS), six German manufacturers of prefabricated buildings have developed surplus energy houses as a showcase in the exhibition area prefab world Cologne.
In the annual balance, a so-called 'Efficiency House Plus' generates more energy than it needs for its own use. It either feeds surplus energy back into the public grid or uses it for electro-mobility. Most buildings have a compact design and the energy performance of the building constructions is optimized. As a rule, the heating demand of most of the pilot houses is slightly above the energy requirement of passive houses. The optimization of both building construction and technical equipment led to the best possible economic concept.
To cover the required heat demand, heat pumps are used in most houses. All buildings are equipped with a mechanical ventilation system using heat recovery. Energy profits are gained by photovoltaic modules installed as roof-top or roof- or facade-integrated solutions. To increase the degree of self-use, surplus energy is stored in a battery in some of the houses.
For the monitoring program, the energy flows of the buildings are measured, recorded and analysed by Fraunhofer IBP. The measuring configuration intends to determine both the monthly energy balances of the building and the performance of the installed technology. Further parameters measured in selected rooms include air temperature, relative air humidity and CO2 concentration levels. The contribution by the photovoltaic plant (which is used on-site or fed into the public grid) and the overall consumption of all electrical appliances of the houses are recorded continuously.
After completion of the houses in spring 2012 the 2-year monitoring period started. Meanwhile, first measurements are available for the period from March 2012 through February 2013.