Martin Schinnerl M.Sc.

Evaporation Processes for µ-g Applications


work +49 6151 16-22273
fax +49 6151 16-22262

Work L2|06 212
Alarich-Weiss-Straße 10
64287 Darmstadt

Since 2020 Researcher at the Institute for Technical Thermodynamics, Technical University of Darmstadt
2020 Master’s thesis: „Investigation of boiling phenomena in weighlessness“ (TTD, Technical University of Darmstadt)
2016 – 2020 M.Sc. Mechanical and Process Engineering, Technical University of Darmstadt
2013 – 2016 B.Sc. Mechanical and Process Engineering, Technical University of Darmstadt
2010 – 2013 Activity as general veterinarian
2002 – 2010 Mag. med. vet. Diploma degree in Veterinary Medicine, University of Veterinary Medicine, Vienna

The heat transfer from a surface to a fluid depends firstly on the heat transfer coefficient, secondly on the fluid and wall temperature and thirdly on the size of the heat transfer surface. Since the total costs of a heat exchanger as a function of surface area and the temperatures represent both economic and physical limits, special attention is paid to the heat transfer coefficient. The heat transfer coefficient takes on comparatively large values in the area of nucleate boiling.

The aim of the project is to investigate the heat transfer from a heated surface to the liquid or vapor phase of a material using individual bubbles, to identify the factors influencing the heat transfer, to quantify their size and to derive approaches for optimizing corresponding applications. The influence of gravity on the bubble dynamics plays an important role in this context.

In detail, boiling experiments carried out on board the International Space Station (ISS) within the framework of the “Reference mUltiscale Boiling Investigation” (RUBI) are scientifically accompanied in exchange with international cooperation partners. In parallel, measurement campaigns under reduced gravity conditions as well as in the laboratory are carried out in the course of parabolic flights. After the implementation of automated, resource-efficient analysis and evaluation methods for processing the measurement data, the results will be evaluated in a summarized form, correlations will be derived and approaches for increasing the heat transfer in heat exchangers will be developed.

The project is funded by the German Aerospace Center (DLR) and the European Space Agency (ESA).

FC-72 bubble in zero gravity