Stroemung von Gasen in prismatischen Kanaelen konstanter Temperatur bei beliebigen Knudsen-Zahlen
Germany
Germany
Auf Grundlage der Ergebnisse einer Literaturrecherche wird ein neues Vormischerkonzept entwickelt, mit dem Ziel einen moeglichst hohen Vorverdampfungsgrad zu erreichen. Mit verschiedenen konventionellen und optischen Messtechniken werden das globale Betriebsverhalten und das reagierende Stroemungsgeld bei atmosphaerischen und realistischen Betriebs...
For rarified gas flow in ducts or channels of prismatic cross section a minimum of the flow resistance, which is known since 1909, is observed for Knudsen-number ranging from 1 to 10. In the present study a closed relation for the flow resistance is proposed and physically justified. This relation should not be interpreted as an interpolation formu...
Germany
Within the scope of the joint research project at a model discharge thermo graphic investigations were carried out. The aim was to determent the influence of failures and bumpiness of the electrodes on their thermal charge. In our investigations no appreciable effect was observed. In a field trail a reactor with a flow rate of 350 m"3/h was operate...
Germany
Germany
Topic of this thesis was the development of thin film solar cells based on microcrystalline silicon prepared by 13.56 MHz PECVD (plasma-enhanced chemical vapor deposition) at high deposition rates. Comprehensive solar cell studies, which were accompanied by material studies, resulted in the identification of the most important prerequisites for hig...
The requirements to the sensors relating to limits of detection, stability, power consumption and resistance to environmental impacts are increasing because of the growing number of application fields like detection of fire and of air conditions. The aim of the project was the development of a miniature gaseous sensor with low power management. We ...
Germany