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Christian Roecker

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Related publications (31)

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Design of a time-efficient video-goniophotometer combining bidirectional functions assessment for transmission and reflection

Jean-Louis Scartezzini, Marilyne Andersen, Christian Roecker

A detailed knowledge of the light distribution characteristics through advanced window systems is required to improve the visual comfort of the building's occupants while controlling the propagation of daylight in rooms and the solar gains. An innovative b ...

Elsevier2005

Angle-dependent spectrophotometry of Sol-Gel deposited multilayered oxide coatings on solar collector glasses

Jean-Louis Scartezzini, Andreas Schueler, Christian Roecker, Estelle De Chambrier

Multilayered thin oxide films have been deposited on solar collector glazing by sol-gel dip coating in a dust-free environment provided by a laminar flux chapel. A superior film quality and a satisfying film homogeneity have been achieved for the produced ...

2005

Sol-gel deposition and optical characterization of multilayered SiO2/Ti1-xSixO2 coatings on solar collector glasses

Jean-Louis Scartezzini, Andreas Schueler, Christian Roecker, Estelle De Chambrier

Thin films of silicon oxide and silicon titanium mixed oxides are deposited on solar collector glazing in a sol–gel dip-coating process based on alcoxide precursors. Spectrophotometry is used to characterize the relation of film thickness and withdrawal sp ...

2006

Nanostructured Coatings on Glazing for Active Solar Facades

Jean-Louis Scartezzini, Josef Andreas Schuler, Christian Roecker, Maria Cristina Munari Probst, Estelle De Chambrier

Thin films on glazing play an important role in the design of solar energy conversion systems as thermal collectors or photovoltaic panels. Antireflective coatings based on porous silicon dioxide are well established in the field of solar collector glazing ...

EPFL2007

Sol-gel deposition and characterization of low refractive index nanocomposite Mg:F:Si:O thin films for solar and protective coatings

Jean-Louis Scartezzini, Josef Andreas Schuler, Christian Roecker, Estelle De Chambrier

Coatings for thermal solar energy conversion have to be abrasion-resistant, stable at elevated temperatures, and often have to protect the substrate against corrosion. Due to the conditions of refractive index matching between the substrate and the ambient ...

2007

New challenges in solar architectural innovation

Christophe Ballif, Jan-Anders Edvin Maansson, Jean-Louis Scartezzini, Yves Leterrier, Andreas Schueler, Christian Roecker, Valentin Chapuis, Krista Susan Lumsden Friedli

Among the century’s main challenges, climate change and the need for energy sources diversification are of great importance. In this context, renewable energies undoubtedly have an important role to play. Photovoltaic (PV) electricity is especially well su ...

EPFL2011

Criteria and policies to master the visual impact of solar systems in urban environments: The LESO-QSV method

Christian Roecker, Maria Cristina Munari Probst

Increased use of solar collectors in buildings is necessary but poses major challenges in existing built environ ments, especially where architectural quality is an issue. The large size of solar systems at the building scale requires careful planning, as ...

2019

Building envelope and solar energy optimization: a new “wizard” for architects

Marja Edelman, Christian Roecker, Maria Cristina Munari Probst

When designing a project, architects are facing more and more constraints on the building’s energy efficiency. Tougher values on insulation and energy consumption are now often combined with compulsory implementation of active solar systems - photovoltaics ...

Université Catholique de Louvain-la-Neuve2011

Facade Integration of Solar Thermal Collectors: Present and Future

Andreas Schueler, Christian Roecker, Maria Cristina Munari Probst, Estelle De Chambrier

Based on the results of a European survey on architectural integration quality, the paper presents a systematic analysis of the facade integration potential of solar thermal collectors provided by Swiss manufacturers, concentrating on glazed flat plates, u ...

EPFL2007

Assessing visibility in multi-scale urban planning: A contribution to a method enhancing social acceptability of solar energy in cities

Jean-Louis Scartezzini, Christian Roecker, Josef Andreas Schuler, Maria Cristina Munari Probst, Pietro Florio

Urban areas are facing a growing deployment of solar photovoltaic and thermal technologies on building envelopes, both on roofs and on façades. An effective solar energy planning process considers social acceptance, in relation to the landscape alteration ...

2018

Simulation Tool for Architects

Christian Roecker, Maria Cristina Munari Probst

The presented work offers an improved planning tool as a response to the demand for active and passive solar architecture. An integral solution is presented for the design of solar assisted heating systems and decentralized electricity production using pho ...

EFPL2009

Architectural integration of solar thermal systems

Christian Roecker, Maria Cristina Munari Probst

The amount of solar energy reaching the Earth in one hour equals the total amount of primary energy used in the world during one year. Thanks to the different solar technologies presently available, most energy needs of buildings can today be covered by so ...

2010

From Thermal Collectors Integration to Active Façade Systems

Christian Roecker, Maria Cristina Munari Probst

One main step to ease facade integration of solar thermal is to conceive new collectors as multifunctional building elements. For flat plate hydraulic collectors (glazed and unglazed) the most natural added function is facade cladding. The new elements sho ...

2007

SOLABS: Development of a Novel Solar Thermal Facade Cladding System

Christian Roecker, Maria Cristina Munari Probst

Within the European project SOLABS (Development of unglazed coloured solar absorbers) a novel performing unglazed metal collector has been developed, using a coloured absorber and with special focus on the architectural integration of the solar system. The ...

2006

Facade Integration of Solar Thermal Collectors: A Breakthrough?

Jean-Louis Scartezzini, Andreas Schueler, Christian Roecker, Maria Cristina Munari Probst, Estelle De Chambrier

One main barrier to the acceptability of façade use of solar thermal collectors is their black appearance and the visibility of piping or absorber irregularities through the glazing. To facilitate façade integration, a project was set up to develop selecti ...

2008

Urban acceptability of building integrated solar systems: LESO-QSV approach

Christian Roecker, Maria Cristina Munari Probst

The concern for sustainable development issues together with the new EU promotion policies are finally leading to a widespread use of Photovoltaic and Solar Thermal systems in buildings. This upcoming reality is opening a new debate on the urban/architectu ...

Universität Kassel2011

Architectural integration of solar thermal collectors: results of a European survey

Andreas Schueler, Christian Roecker, Maria Cristina Munari Probst

A survey has been conducted as part of the European project SOLABS (unglazed coloured solar absorbers for building facades) to provide the design team with a set of formal design guidelines. Targeted mainly at European architects of the three climatic regi ...

2005

Novel Colored Esthetical and Lightweight Photovoltaic Tiles for Full Building Integration

Christophe Ballif, Jan-Anders Edvin Maansson, Jean-Louis Scartezzini, Yves Leterrier, Christian Roecker, Josef Andreas Schuler, Martin Joly, Stefan Mertin, Valentin Chapuis

2012

Development of solar ventilated façade system for building energy retrofit

Christian Roecker, Maria Cristina Munari Probst

In the perspective of setting ambitious targets for new buildings energy performance and of introducing new approaches to retrofit existing buildings, the implementation of solar thermal collectors into façade becomes very interesting Several research acti ...

2010

Towards an improved architectural quality of building integrated solar thermal systems (BIST)

Christian Roecker, Maria Cristina Munari Probst

Architectural integration is a major issue in the development and spreading of solar thermal technologies. Yet the architectural quality of most existing building integrated solar thermal systems (BIST) is quite poor, which often discourages potential new ...

2007