Talks and Poster Presentations (with Proceedings-Entry):
B. Windholz, C. Zauner, M. Rennhofer, H. Schranzhofer:
"Solar Thermal Energy Conversion and Photovoltaics in a Multifunctional Facade";
Talk: CISBAT 2011,
- 09-16-2011; in: "Proceedings of CISBAT 2011",
EPFL, Lausanne, Schweiz,
Beyond constructing buildings with very small demands of energy out of non-renewable
sources, cf. passive house standard, more and more buildings with even no demand of these
sources are erected, so-called energy-plus-buildings. Therefore, renewable energy sources,
such as biomass, geothermal, solar thermal or photovoltaics are directly used in family
houses, offices and industrial buildings, thus converting more renewable energy than
consumed for heating, cooling and electricity. By integrating renewable energy systems into
buildings requirements of architects, system planners, manufacturers, building companies and
end-users must be taken into consideration. Sound energetic design, ease of fabrication,
proper functionality and architectural quality must be ensured over the whole life-span of
The Austrian research project "Multifunctional Plug & Play Façade" (MPPF) treats the
building envelope as an active part of the building. The conversion of various renewable
energy sources is integrated directly into the façade. In addition, heating and cooling out of
the façade as well as ensuring a suitable indoor climate is developed. Our consortium,
consisting of façade builders, system planners and manufacturers as well as research
institutes, entangles the various interest groups right from the beginning.
In the second year of the five years lasting MPPF-project the first demonstration façade was
installed in Stallhofen near Graz (Austria) including innovative solar thermal collectors (ST)
and photovoltaic modules (PV).
In order to study the energetic behaviour of the various technologies as well as the influence
of single functional façade elements on the building core an intensive monitoring was set up.
Important building physical aspects, such as temperature loads, moisture content, and heat
transfer were recorded via temperature, humidity and heat flux sensors at various positions.
Analysis of the energy yield of ST collectors was done via mass flow meters and temperature
sensors, the energy yield of PV modules was detected by their short circuit current.
Measurements of the ambient conditions, such as solar radiation, wind speed, wind direction
and outside temperature complemented the monitoring.
In addition to the very concept as well as the installed demonstration façade itself we show
continuous monitoring results starting from June 2010 covering the periods of low-standing
sun, most important for these façade modules.
Created from the Publication Database of the AIT Austrian Institute of Technology.