This essay examines the Nibelungensage and its filmic adaptations within the framework of the multi- perspective approach of German Studies. It is about the approaches of Casper-Hehne/ Schweiger in the sense of a synthetic approach to the concept of culture, and Nünning/ Nünning, whose terminology is extended to filmic narrations. The intertextuality of the “Nibelungen-films” and of the “Nibelungensage” is also relevant. The analysis focuses on the films by Fritz Lang (1924), Harald Reinl (1966/67), Uli Edel (2004) and Ralf Huettner (2008).

This contribution deals with the heat transfer parameters and pressure losses in heat exchange sets with six geometrical arrangements at low Re values (Re from 476 to 2926). Geometrical arrangements were characterised by the h/H ratio ranging from 0.2 to 1.0. The experiments used the holographic interferometry method in real time. This method enables visible and quantitative evaluations of images of temperature fields in the examined heat exchange. These images are used to determine the local and mean heat transfer parameters. The obtained data were used to determine the Colburn j-factor and the friction coefficient f. The measured values show that by using the profiled heat exchange surfaces and inserting regulating tubes, an intensification of heat transfer (increase of Num, and/or j) was achieved. However, pressure losses recorded a significant increase (increase of f).