European Space Agency experiments on thermodiffusion of fluid mixtures in space

Abstract.: This paper describes the European Space Agency (ESA) experiments devoted to study thermodiffusion of fluid mixtures in microgravity environment, where sedimentation and convection do not affect the mass flow induced by the Soret effect. First, the experiments performed on binary mixtures in the IVIDIL and GRADFLEX experiments are described. Then, further experiments on ternary mixtures and complex fluids performed in DCMIX and planned to be performed in the context of the NEUF-DIX project are presented. Finally, multi-component mixtures studied in the SCCO project are detailed

The Diffusion Coefficient measurements in ternary MIXtures N4 (DCMIX4) Space experiment

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Ground measurements of dcmix 4 project Fullerene based nanofluid

This work presents first on ground measurements of DCMIX 4 project ternary nanofluid Fullerene, 1,2,3,4-tetrahydronaphtalene and Toluene. Transport properties have been measured by Thermogravitational, Optical Digital Interferometry and Optical Beam Deflection techniques for concentration analysed in DCMIX 4 project, which refers to 0.0007 – 0.60 – 0.3993 and other fullerene concentrations around this value. Various thermophysical and optical properties which are necessary to determine thermodiffusion coefficients have been also measured

Tecnologías digitales para el análisis de edificios. Salud, confort y energía. = Digital technologies for building analysis. Health, confort and energy.

La digitalización de la edificación se ha convertido en una de las claves en el sector con el objeto de mejorar los flujos de trabajo y por ende mejorar su competitividad. No obstante, la digitalización per se es un importante desafío que a nivel operativo resulta difícil implementar debido a los múltiples obstáculos ante los que nos encontramos en el día a día. Debido a ello, las organizaciones deben de seguir la estrategia que mejor se ajuste a sus necesidades y que permita distinguir aquellas herramientas que realmente les ayuden a facilitar el trabajo. La presente investigación se centra en las conclusiones obtenidas a partir de la aplicación real de diversas tecnologías digitales durante los análisis energéticos llevados a cabo para el Ayuntamiento de Hernani (Gipuzkoa). A partir de los dos casos de estudio analizados, la propia Casa Consistorial y la Casa de Cultura de Biteri, se implementaron las tecnologías digitales que mejor se adaptaban a los trabajos a realizar. Entre ellas caben destacar, la monitorización higrotérmica mediante el desarrollo propio de dispositivos a través de impresión 3D, Plataformas de Código Abierto (OSP Open Source Platforms) y el Internet de la Cosas (IoT), la evaluación de la envolvente térmica mediante termografía infrarroja, termoflujometría y blower door test, la generación de gemelo digital de edificio histórico a través de la metodología BIM, y la evaluación del confort y la demanda energética de distintas medidas de intervención mediante software dinámico para la simulación energética de edificios. Del trabajo llevado a cabo se concluye que las herramientas empleadas han facilitado las tareas encomendadas de evaluación del comportamiento actual y las propuestas de rehabilitación de los edificios objeto de estudio. No obstante, también se ha detectado que los altos costes de adquisición de equipos, la necesidad de una formación muy específica o una normativa actual muy restrictiva pueden suponer importantes obstáculos que dificultan la implantación de estas tecnologías. Por lo tanto, si uno de los objetivos actuales es la implementación de herramientas digitales, establecer las rutas necesarias para tal fin se convierte en una prioridad para el sector de la edificaciónAbstractThe digitization of the building sector has become one of the keys in this area because it improves workflows and therefore improves its competitiveness. However, digitization per se is an important challenge that at an operational level is difficult to implement due to the multiple obstacles we face on a day-to-day basis. Therefore, organizations must follow the strategy that best suits their needsand that allows distinguishing those tools that really help them to facilitate their work. This research focuses on the conclusions obtained from the real application of various digital technologies during the energy analysis carried out for the Hernani City Council (Gipuzkoa). For both case studies analysed, the Town Hall itself and the House of Culture of Biteri, the digital technologies that best adapted to the work were implemented. These included hygrothermal monitoring with the own developed devices by 3D printing, Open Source Platforms (OSP Open Source Platforms) and the Internet of Things (IoT), the evaluation of the thermal envelope using infrared thermography, heat flow metering and blower door test, the generation of a historic building's digital twin with the BIM methodology, and the evaluation of comfort and energy demand of different intervention measures using dynamic software for the energy simulation of buildings. From the work carried out, it is concluded that the tools used have facilitated the tasks assigned to evaluate the current performance and the proposals for the refurbishment of the buildings under study. However, it has also been detected that high equipment acquisition costs, the need for very specific training or very restrictive current regulations can pose significant obstacles that hinder the implementation of these technologies. Therefore, as one of the current objectives is the implementation of digital tools, establishing the required routes for this purpose becomes a priority for the building sector

European Space Agency experiments on thermodiffusion of fluid mixtures in space

.This paper describes the European Space Agency (ESA) experiments devoted to study thermodiffusion of fluid mixtures in microgravity environment, where sedimentation and convection do not affect the mass flow induced by the Soret effect. First, the experiments performed on binary mixtures in the IVIDIL and GRADFLEX experiments are described. Then, further experiments on ternary mixtures and complex fluids performed in DCMIX and planned to be performed in the context of the NEUF-DIX project are presented. Finally, multi-component mixtures studied in the SCCO project are detailed