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Hygric and Thermal Simulation

About us


Daniel Rüdisser

DI Daniel Rüdisser


Engineering office and software development, HTflux, founder, CEO


Researcher, Building science lab, Technical University Graz
Pentaxon Investment Technologies AG, CTO, financial services
iuvaris Software GmbH, founder, CEO, engineering software services
Science Park Graz, academic incubator
CARD EDV GmbH, founder, CEO, textile CAD and simulation software
Graduation with excellence in Technische Physik (applied physics), Tech. University Graz


physics, building science, sustainability, highly-optimized low-tech solutions, software, simulation, optimization, numerical modelling
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Mag. Florian Preininger

Web-programming and UI development

drogerie21 – websites and web-apps |