Technische Universitāt Wien

Technische Universitäet Wien

Axiom Angewandte Prozesstechnik Ges. M.b.h.

Bdi—bioenergy International Gmbh

Bdi-bioenergy International Ag

Akademie Der Bildenden Kuenste Wien

Axiom Angewandte Prozeßtechnik Ges. M.b.h.

Michael Harasek

Bernhard Lendl

Christian Maier

Christoph Janeczek

Margit Gföhler

Johannes Szivacz

Roland Kirchmayr

Christian Jordan

Christoph Gasser

Reinhold Waltenberger

Bahram Haddadi

Christian Knoll

Danny Mueller

Andreas Werner

Margit GFÖHLER

Werner Liemberger

Danny MÜLLER

Aleksander Makaruk

Martin Miltner

Peter Weinberger

Andreeas Werner

The invention relates to a method for the contactless determining of the speed of a fluid flow and the concentration of at least one analyte therein, wherein a) the flow speed is measured by means of laser Doppler anemometry (LDA) using tracer particles which pass through an interference fringe pattern in the intersection region of two coherent monochromatic light beams and thereby generate a scattered light signal; and b) the concentration of the at least one analyte is measured by means of Raman spectroscopy, wherein a monochromatic light beam is radiated in and the Raman spectrum of the light inelastically scattered on the analyte molecules in the flow is recorded; wherein c) a single light source is used for both the LDA and the Raman spectroscopy, such that both measurements are carried out in the intersection region of two two coherent light beams coming from the light source, wherein the speed is measured by photons elastically scattered onto the tracer particles, and the concentration is measured by photons inelastically scattered onto analyte molecules; and d) for the purposes of speed measurement, the elastically back-scattered photons are detected by the same lens optic that is also used for the radiation of the light beams.

Method for the contactless determining of flow parameters using laser doppler anemometry and Raman spectroscopy through a same optical lens system

A substance exchange device for intracorporal use includes a cavity for receiving blood having at least one blood inlet and at least one blood outlet, a substance exchange membrane adjoining the cavity, a supply duct for supplying an exchange fluid to the substance exchange membrane, a blood pump arranged within the cavity and a drive unit for the blood pump. The blood pump is configured to pump blood in a direction from a blood inlet to a blood outlet of the cavity. The drive unit includes a turbine, which is connected to the supply duct and may be driven by an exchange fluid supplied via the supply duct, where the turbine includes at least a rotor coupled to the blood pump and a stator (turbine nozzle) arranged upstream of the rotor.

Membrane catheter

The invention relates to a method for removing ammonia or reducing ammonium from biogas plant fermentation liquids or biogas plant fermentation residues, wherein ammonia or ammonium is reduced by way of flash evaporation, separated from the biogas plant fermentation liquids or biogas plant fermentation residues, and removed as ammonia. The invention further relates to a device for performing said method.

Separation method

A device for separating a gas mixture into product gas and offgas by way of gas permeation includes four membrane units and a compressor connected upstream of the first membrane unit. The membrane units have a gas inlet, a retentate outlet and a permeate outlet. Lines connect the membrane units to each other and to the compressor. Product gas is obtained via the permeate outlet of the second membrane unit and offgas via the retentate outlet of the first membrane unit. Additional product gas is obtained via the retentate outlet of an upstream membrane unit and additional offgas is obtained via the permeate outlet of a further upstream membrane unit. A method includes use of the device to separate a gas mixture into product gas and offgas.

Device and method for separating a gas mixture

Growing community of inventors

Vienna, Austria

Michael Harasek