{"id":109,"date":"2025-04-09T11:30:38","date_gmt":"2025-04-09T09:30:38","guid":{"rendered":"https:\/\/e4tech-software.lesosai.com\/developpement-de-logiciels\/"},"modified":"2025-04-29T11:40:02","modified_gmt":"2025-04-29T09:40:02","slug":"developpement-de-logiciels","status":"publish","type":"page","link":"https:\/\/www.e4tech-software.com\/en\/developpement-de-logiciels\/","title":{"rendered":"Projects"},"content":{"rendered":"

Software development<\/h4>\n

E4tech Software works in partnership with other organisations to develop software tools for Sustainable Buildings and energy applications.<\/p>\n

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\u201cInteroperability platform between Building Information Modeling and Building Energy Modeling\u201d<\/h4>\n

Client:\u00a0<\/strong>Commission pour la technologie et l\u2019innovation (CTI).<\/p>\n

Partners:\u00a0<\/strong>CNPA – EPFL.<\/p>\n

Building Energy Modeling (BEM) is an analytical method for reducing the consumption and CO2 emissions in building design. However, it is often conducted too late in the process. At the same time, the use of Building Information Modeling (BIM) in project planning phases is becoming more widespread. This digitization of construction data through a digital model allows the sharing of standard data between all the actors of a project.<\/p>\n

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\u201cSystemnachweis Minergie-ECO\u00ae<\/sup>\u201d<\/h4>\n

Client:\u00a0<\/strong>EcoBau, Swiss Federal Office of Energy<\/p>\n

Partners:\u00a0<\/strong>Concepto, Intep, Heig-VD<\/p>\n

The Minergie-ECO\u00ae label has recently been established in Switzerland, as a result of co-operation between two organisations, Minergie and eco-bau. The objective of this new label is to promote buildings that not only have very low energy consumption but also guarantee a healthy and comfortable interior and a limited impact on the environment. It will be possible to use this tool either during construction or renovation. Several DLL (dynamic link library) components are currently being developed and E4tech is responsible for those components relating to energy calculations and comfort levels.<\/p>\n<\/div>

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Contribution to simulationtools for architects optimisation of active and passive solar use<\/h4>\n

Client:<\/strong>Swiss Federal Office of Energy.<\/p>\n

Partners:\u00a0<\/strong>Concepto, EPFL, VelaSolaris<\/p>\n

Challenge:\u00a0<\/strong>Develop and market a software tool to assist in sustainable buildings design.<\/p>\n

Approach:<\/strong>\u00a0Solar energy, in its various forms of passive solar, active thermal and photovoltaics, is more and more needed to allow substitution of non-renewable energy in buildings and reduce the impact of the buildings to the environment. Computer tools to simulate the thermal behaviour of buildings, as SIA380\/1 tools, include today passive solar gains but have crude or none implementation of active solar thermal. On the other hand solar thermal system simulation tools are very specialised and accurate, but not well linked to building models. Both tools are mostly used by engineers and thermal energy experts either to check the compliance with (SIA) Norms or to dimension the solar thermal system. Only some architects use these tools.
\nThe goals of this project are twofold:
\n– combine in one tool the building energy model and all passive and active \u201csolar\u201d gains (windows, thermal collector, photovoltaics), allowing the user to optimise his project by testing complete solar variants at once.
\n– simplify the user interface, by reducing the need of data by providing \u201cintelligent\u201d default values for solar systems and building elements, to broaden the use of this tool to the architects community.<\/p>\n<\/div>

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Lesosai \u2013 Software for thermal energy balance simulations for buildings<\/h4>\n

Client:<\/strong>\u00a0In-house product development, with Swiss Federal Institute of Technology.<\/p>\n

Partners:\u00a0<\/strong>Concepto, EPFL, VelaSolaris, Meteotest, Heig-VD,<\/p>\n

Challenge:\u00a0<\/strong>Develop and market a software tool to assist in sustainable buildings design.<\/p>\n

Approach:<\/strong>\u00a0Design, programme and market software tool that calculates energy flows and verifies building compliance with national and EU standards.<\/p>\n<\/div>

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MaterialsDB.org \u2013 tool for facilitating information exchange between building material providers and building physics software<\/h4>\n

Client:<\/strong>\u00a0In-house product development, with and the building material providers Flumroc, Isover, Morandi, Pavatex, Swisspor, Tuileries de Fribourg et Lausanne,….<\/p>\n

Challenge:\u00a0<\/strong>Develop a tool for facilitating information exchange between building material providers and building physics software.<\/p>\n

Approach:<\/strong>\u00a0The tool want facilitate information exchange between building material providers and building physics software. At the moment, building physics software developers and building material providers all use different formats for their databases. This prevents the regular and frequent update of the list of materials available on the market.
\nE4tech and the building material providers Flumroc, Isover, Morandi, Pavatex, Swisspor, Tuileries de Fribourg et Lausanne, with the assistance of the Fraunhofer Institute, have developed a new open source format in XML (Extensible Markup Language). The project is funded by the providers and is open to others willing to join.<\/p>\n

MaterialsDB.org<\/a>.<\/p>\n<\/div>

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Machine Learning Methods in Building Energy Modelling.<\/h4>\n

Clients:<\/strong>\u00a0Innosuisse \u2013 Swiss Innovation agency<\/p>\n

Challenge: <\/strong>Simultaneously optimizing operational energy, grey energy and comfort is a complex task that must be tackled in building design. Energy targets for new buildings and renovations must not only be met, but significantly undercut. This work aims at finding solutions to this problem.<\/p>\n

Approche :<\/strong>\u00a0 Ongoing project<\/p>\n<\/div><\/div><\/div>

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