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Krail, Jürgen
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Official Name
Krail, Jürgen
Main Affiliation
Akademische Titel
Prof.(FH) DI DI(FH)
Email
juergen.krail@fh-burgenland.at
ORCID
Scopus Author ID
57210393827
Status
staff
Research Outputs
Now showing 1 - 10 of 24
- PublicationNeuartige, biomasse-gefeuerte Heißgaserzeuger für Trocknungsprozesse(2007)
;Beckmann, Georg; 177 3 - PublicationAssessing the technical feasibility of value chains for Reed based biofuels(2015)
; ;Kitzler, Hannes ;Beckmann, Georg; ;Pfeifer, Christoph260 1359 - PatentMethod and device for converting thermal energy into mechanical or electrical energy - WO2019227117 (A1)The invention is intended to increase the energy efficiency and cost efficiency of Clausius-Rankine cycles, in particular for utilizing low-temperature heat, and to avoid the disadvantages of the processes that have become known. The heat-absorbing part of the cycle is provided with branches (24), which branch off flows from the main flow of the medium used in the cycle, connect them to mixers (31), in which the branched-off flows are mixed with the exhaust steam from exhaust-steam lines (20) of the expansion engines or the turbines (19), and these mixed steam flows are reintroduced into the cycle by way of cold exhaust-steam lines (21). A significant increase in the energy efficiency is obtained when using media of the "dry" fluid class in the cycle, by virtue of the fact that the flows mixed in evaporate completely, in return for which there is overheating in the main flow, and a greater flow of steam is available to the medium-pressure turbine (19MD) for expansion, which leads to extra power at the turbines of 10 to 15%.
112 1 - PublicationEnergy conversion from reed biomass - Overview of laboratory and field test results(2013)
; ;Kitzler, Hannes ;Beckmann, Georg; ; Pfeifer, Christoph162 2 - PublicationBallenfeuerungsanlage für halmartige Biomasse zur Strom- und Wärmeerzeugung(2006)
; ; Beckmann, Georg178 1 - PublicationImproved ORC process for power production by using low temperature heat(2021-10-13)
; ;Beckmann, GeorgOrganic Rankine Cycles (ORC) are a modification of the classical water-steam process and are particularly suitable for electricity generation from low and medium temperature heat sources, e.g., industrial waste heat or geothermal energy. In contrast to the water-steam process, the ORC process uses organic fluids as working fluids. When using working fluids of the dry class (e.g. n-pentane), a recuperator is frequently installed in state-of-the-art ORC processes to increase the cycle efficiency. This paper analyses an improved ORC process design: A liquid working fluid stream is mixed with the vapour flow between the high-pressure stage and the medium-pressure stage of the turbine. Furthermore, the recuperator is replaced by a spray condenser. These two improvements were analysed by thermodynamic process simulations. As a use case, electricity production from clinker cooler waste heat at a temperature level of 275°C was simulated. The improved process as described would lead to an increase in the overall net efficiency up to 14%, compared to a state-of-the-art ORC process.154 564 - PatentVerfahren zur Steigerung der Energieeffizienz in Clausius-Rankine-Kreisprozessen(2020-01-16)
; Beckmann, GeorgDie Erfindung soll die Energie- und Kosteneffizienz der Clausius-Rankine-Kreisprozesse, insbesondere für die Nutzung von Niedertemperaturwärmen, erhöhen und die Nachteile der bekanntgewordenen Prozesse vermeiden. Im wärmeaufnehmenden Teil des Kreisprozesses sind Abzweigungen (24) vorgesehen, welche Ströme aus den Hauptstrom des Kreislaufmediums abzweigen, diese mit Mischern (31) verbinden, in welchen die abgezweigten Ströme mit dem Abdampf aus Abdampfleitungen (20) der Expansionsmaschinen oder der Turbinen (19) vermischt werden und dieser vermischte Dampfstrom über Kalte Abdampfleitungen (21) im Kreisprozess weitereingeführt werden, wobei mehr Abzweigungen als Mischer vorgesehen sind. Ein signifikanter Anstieg der Energieeffizienz ergibt sich bei der Anwendung von Kreislaufmedien der "trocknenden" Fluidklasse daraus, dass die zugemischten Ströme, auf Kosten der Überhitzung im Hauptstrom, vollständig verdampfen, und der Mitteldruck- Turbine (19MD) ein höherer Dampfstrom zur Expansion zur Verfügung steht, was zu einer Mehrleistung an den Turbinen von 10 bis 15 % führt.582 1 - PublicationENEREED - Sustainable Energy Conversion from Reed(Klima- und Energiefonds, 2013-12-19)
; ; ; ; ; ;Kitzler, Hannes ;Pfeifer, Christoph ;Hofbauer, HermannBeckmann, Georg258 4399
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