Énergie solaire thermique

Résumé

upright|vignette|Un champ de capteurs solaires au Danemark au sein d'une centrale de chauffage solaire, permettant de récupérer l'énergie thermique du rayonnement solaire. L'énergie solaire thermique est l'énergie thermique du rayonnement solaire. Elle est captée dans le but d'échauffer un fluide (liquide ou gaz). L'énergie reçue par le fluide peut être ensuite utilisée directement (eau chaude sanitaire, chauffage) ou indirectement (production de vapeur d'eau pour entraîner des alternateurs et ainsi obtenir de l'énergie électrique, production de froid). C'est ainsi une forme d'énergie solaire, provenant de la chaleur transmise par le Soleil par rayonnement. Une autre forme notable est l'énergie solaire photovoltaïque, qui utilise l'effet photoélectrique afin de transformer les photons émis par le soleil en électricité. Le capteur solaire thermique est l'instrument utilisé pour transformer le rayonnement solaire en chaleur. Les principes physiques fondamentaux qui fondent cette produc

Source officielle

https://fr.wikipedia.org/wiki/%C3%89nergie_solaire_thermique

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Solar energy for zero energy buildings a comparison between solar thermal, PV and photovoltaic-thermal (PV/T) systems

LESO-PB, EPFL2015

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

Marja Edelman, Maria Cristina Munari Probst, Christian Roecker

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 or solar thermal. With natural lighting, passive and active solar all competing for envelope areas, comparing results of architectural variants becomes more important and at the same time more complex. To help overcome this situation, a renowned “energy balance calculation/certification” software tool has been improved and adapted, proposing a wizard developed to meet a growing demand: obtain a quick feedback on building envelope, energy efficiency and solar strategies, especially in the early design stage, when strategies are defined. The wizard helps fulfilling various norms of different European countries, allowing architects to compare variants during this crucial phase. By simplifying data entry using smart default values derived from appropriate general choices, and by presenting a clear and intuitive user’s interface, this new tool offers practicing architects an easy access to building envelope and solar energy use optimization.

Université Catholique de Louvain-la-Neuve2011

Chargement

Although mature technologies at competitive prices are largely available, solar thermal is not yet playing the important role it deserves in the reduction of buildings fossil energy consumption. The generally low architectural quality characterizing existing building integrations of solar thermal systems pinpoints the lack of design as one major reason for the low spread of the technology. As confirmed by the example of photovoltaics, the improvement of the architectural quality of building integrated systems can increase the use of a solar technology even more than price and technique. This thesis investigates the possible ways to enhance the architectural quality of building integrated solar thermal systems, and focuses on integration into façade, where the formal constraints are major and have most impact. The architectural integration problematic is structured into functional, constructive and formal issues, so that integration criteria are given for each architectural category. As the functional and constructive criteria are already recognized by the scientific community, the thesis concentrates on the definition of the formal ones, yet underestimated or misunderstood. The results of a large European survey over architects and engineers perception of building integration quality are presented, showing that for architects formal issues are not a matter of personal taste, but that they relate to professional competences, and consequently can be described. The solar system characteristics having an impact on the formal quality of the integration are identified (formal characteristics), the related integration criteria are assessed, and finally integration guidelines to support architect integration design work are given. The limits imposed by the collectors available in the market are pointed out, showing that the lack of appropriate products is nowadays the main barrier to BIST (Building Integrated Solar Thermal) architectural quality. A methodology for the development of new solar thermal collectors systems responding at the same time to energy production needs and building integration requirements is defined. The importance to ensure, within the design team, the due professional competences in both these fields is stressed. Three progressive levels of system "integrability" are defined in the path leading to the concept of "active envelope systems" and the main role of facade manufacturers is highlighted. The methodology is applied to unglazed and glazed flat plate systems, and new façade system designs are proposed that show the relevance of the proposed approach.

EPFL2009

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EPFL2009

Énergie solaire thermique

Solar energy for zero energy buildings  a comparison between solar thermal, PV and photovoltaic-thermal (PV/T) systems

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

Solar energy for zero energy buildings  a comparison between solar thermal, PV and photovoltaic-thermal (PV/T) systems

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

Solar energy for zero energy buildings a comparison between solar thermal, PV and photovoltaic-thermal (PV/T) systems

Solar energy for zero energy buildings a comparison between solar thermal, PV and photovoltaic-thermal (PV/T) systems