PV-Tool: Development of a simulation tool for the design of modular energy-generating façade systems with phase-change materials (PCM)
| Project director | Prof. Dr.-Ing. Bernhard Weller |
| Employee | Dipl.-Ing. Christian Popp |
| Funding | BMWI - Zentrales Innovationsprogramm Mittelstand (ZIM) |
| Period | 2019-2021 |
Objectives and work programme
Germany's federal government is aiming for a nearly climate-neutral building stock by 2050. In order to achieve this goal, in addition to reducing energy consumption, the generation and use of renewable energies directly on the building needs to be widely applied.
Façade-integrated photovoltaic (PV) systems have a large but poorly used potential for renewable energy generation. Until now, the integration of PV modules in warm façades has been considered problematic because high module temperatures are reached in this installation situation, resulting in a loss of PV performance. However, by combining PV modules with latent heat storage materials (PCMs), this temperature increase can be compensated, as the PCMs absorb large amounts of energy during the melting process. A correctly selected melting point of the PCM thus reduces the temperature and increases the yield of the PV modules in warm façades.
The aim of the research project is to develop a design tool for the use of PCM in PV warm façades. This will enable to determine the required quantity as well as the thermal properties of the PCM for the respective façade orientation, geographical location and use of the building at an early stage of the project in order to achieve maximum performance increase of the PV. Embedding the tool in a building simulation program also allows the influence of the PCM on heat losses through the façade and thus on the overall energy demand of the building to be taken into account. In addition, a modular façade system with scalable encapsulations (containers for PCM) is being developed in order to integrate the required amount of PCM into the façade depending on the application and to cover variable PV module sizes with PCM encapsulations over a wide area.
Partners
PAZDERA AG, Coburg
Rubitherm Technologies GmbH, Berlin
ADO-Metall GmbH, Geeste
Institute for Building Climatology, TU Dresden
Contact
© Franziska Rehde
Prof. Dr.-Ing. Bernhard Weller
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Institute of Building Construction
Institute of Building Construction
Visiting address:
ABS 30, Haus 116, Raum 06-017 August-Bebel-Straße 30
01219 Dresden
© Franziska Rehde
Research Associate
NameDipl.-Ing. Christian Popp
Send encrypted mail via the SecureMail portal (for TUD external users only).
Institute of Building Construction
Institute of Building Construction
Visiting address:
ABS 30, Haus 116, Room 06-012 August-Bebel-Straße 30
01219 Dresden