Papers by Raphaël Compagnon
Tracés, 2023
Comment explorer les mécanismes à l’œuvre pour lutter contre les îlots de chaleur? Conçu à la HEI... more Comment explorer les mécanismes à l’œuvre pour lutter contre les îlots de chaleur? Conçu à la HEIA-FR, le pavillon DEMO-MI2 a été pensé aussi bien comme dispositif expérimental low-tech à l’attention des professionnel·les que comme démonstrateur visant le grand public et sa perception du phénomène.
This paper describes the approach taken within the EC’ sD aylight-Europe project to apply combine... more This paper describes the approach taken within the EC’ sD aylight-Europe project to apply combined thermal/ daylight simulations to e xisting building designs which are representative o fE uropean types and climate contexts. The outputs from the performance appraisals are then incorporated within design guidelines for daylighting best practice. The paper elaborates a multi-criteria appraisal set which is used to assess the overall performance of a building and compare this with a matched reference case formed by removing the special daylighting features.
Although maps of solar irradiance are available, they don't have a sufficient resolution to c... more Although maps of solar irradiance are available, they don't have a sufficient resolution to consider the influence of the surrounding constructions and of natural elements such as trees, vegetation and small hills. A detailed knowledge of the solar radiance is instead necessary to evaluate the potential of solar technology (active and passive) and to orientate choices, decisions and investments in energy and urban plans. The UiSOL project (Urban integrated Solar Technologies) analyzes the relationship between different variables that characterize the urban layout and consequently its solar active and passive potential and, in order to prevent an indiscriminate use of solar application and to invest economic and space resources in the more effective way possible, also evaluate various methods of utilization to find a good balance between technical and aesthetical requests.
Two methods of introducing the radiance lighting and daylighting simulation software to architect... more Two methods of introducing the radiance lighting and daylighting simulation software to architecture students in a relatively short time are presented. The production of visual teaching materialusing the same software is also discussed.
Note: EIG, Geneve Reference LESO-PB-REPORT-1997-009 Record created on 2005-01-12, modified on 201... more Note: EIG, Geneve Reference LESO-PB-REPORT-1997-009 Record created on 2005-01-12, modified on 2016-08-08
Note: Report for the Daylight-Europe Simulation team Reference LESO-PB-REPORT-1997-001 Record cre... more Note: Report for the Daylight-Europe Simulation team Reference LESO-PB-REPORT-1997-001 Record created on 2005-01-12, modified on 2016-08-08
Diverses methodes de mesurage, utilisant des gaz traceurs, peuvent etre utilisees pour determiner... more Diverses methodes de mesurage, utilisant des gaz traceurs, peuvent etre utilisees pour determiner l'importance des flux d'air, les caracteristiques d'un systeme de ventilation ou la repartition des polluants dans un ou plusieurs locaux. La decision de faire des mesures et le choix de la methode de mesurage dependent en premier lieu du probleme a resoudre, probleme qu'il convient de definir exactement.
Note: EIG, Geneve Reference LESO-PB-REPORT-1997-008 Record created on 2005-01-12, modified on 201... more Note: EIG, Geneve Reference LESO-PB-REPORT-1997-008 Record created on 2005-01-12, modified on 2016-08-08
Architecture and Urban Space, 1991
Indoor Air, 1991
The main a i m and contaminant paths or the spatial dismbutim of the age of air (or contaminant) ... more The main a i m and contaminant paths or the spatial dismbutim of the age of air (or contaminant) in a m are of great interest in e s t i d n g venrilation fi-&my. A simple meusurement method is presented which consists of injecting m or more tracer gases at locations of interest and anulysing the concentration at several other locations, carefuuy chosen for best accuracy. Response functions can be@d to these measurements, which are the age of the t r m or of the air or the concmation of the tracers as a function of the b carion. The salient paths, such as the dead z m , are aiso determinedfiom thesefunctions. 7 7~ paper presents the m h o d , its application and valdation in a well controlled test room.
Nonimaging optics principles have been applied to the design of new reflectors forming daylightin... more Nonimaging optics principles have been applied to the design of new reflectors forming daylighting systems. Two examples for the side lighting of a deep room are presented. The performance (illuminance levels, visual comfort probability) recorded by means of computer simulation is encouraging.
ISES Solar World Congress, 1993
Nonimaging optics principles have been applied to the design of new reflectors forming daylightin... more Nonimaging optics principles have been applied to the design of new reflectors forming daylighting systems. Two examples for the side lighting of a deep room are presented. The performance (illuminance levels, visual comfort probability) recorded by means of computer simulation is encouraging.
What will be the contribution of Solar Energy to a «2000 Watts Society» in an urban environment? ... more What will be the contribution of Solar Energy to a «2000 Watts Society» in an urban environment? How much Solar Energy can we expect to collect from the roofs and facades of buildings in an urban setting? What is the fraction of building roofs and facades appropriate for the use of Solar Energy Technologies? What is the optimal location of the different Solar Energy Technologies on building roofs and facades? SOLURBAN Construction
Note: EPFL Reference LESO-PB-CONF-1996-014 Record created on 2005-01-12, modified on 2016-08-08
Solar irradiance and illuminance are important renewable resources that can significantly increas... more Solar irradiance and illuminance are important renewable resources that can significantly increase buildings' energy efficiency, associated to solar passive and active techniques and use of daylighting. In addition, it is widely acknowledged that the presence of natural light and some sunlight indoors is essential for inhabitants' well-being. This paper presents a new method to assess solar and daylight availability in the built environment at different scales. The method is based on two types of images where the mutual obstruction between neighbouring buildings is represented over stereographic projections of the sky vault. The images can be used in two ways, either for the visual assessment of the examined surface(s) or, to be processed as to obtain a series of numeric performance indicators. In both ways, they can be combined with similar projections of the sun path or sky radiance/luminance distributions, for considering locations' latitude and climate, respectively. To exemplify the use and relevance of the tools, especially at the early-design stages, the method is applied to compare the proposals submitted in a masterplan competition. The five finalists are examined in relation to the performance of their façades and roofs, as well as their impact on an existing façade. Last, a targeted analysis showed a good correlation between performance indicators, readily computed by the method, and predicted annual energy demands.
Proceedings of the ISES Solar World Congress 2021
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Papers by Raphaël Compagnon