of a three-step design chain for the simple and efficient design of
tube bundle heat exchangers or evaporators respectively with a focus on ORC applications. It contains a design calculation
tool [...] calculation and design of the heat exchanger. The present paper deals with all of
these design steps in an attempt to integrate the solutions to these problems into a single design chain for ORC tube [...] CONCLUSION
With the three-step design chain for tube bundle heat exchangers in ORC plants, the operator has a great tool at
his hands for designing basic heat exchangers as they are used in
of a three-step design chain for the simple and efficient design of
tube bundle heat exchangers or evaporators respectively with a focus on ORC applications. It contains a design calculation
tool [...] calculation and design of the heat exchanger. The present paper deals with all of
these design steps in an attempt to integrate the solutions to these problems into a single design chain for ORC tube [...] CONCLUSION
With the three-step design chain for tube bundle heat exchangers in ORC plants, the operator has a great tool at
his hands for designing basic heat exchangers as they are used in
date 2019-06-17T07:57:01Z
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data of each individual design are stored. The designer can then choose the best compromise for the
given task.
With the available 3D CAD model of the turbine, the next design step, the analysis of [...] introduced briefly in this paper. However, more focus is put
on the developed 1D turbine design tool. It allows to design and optimize a single stage turbine for any
fluid and any boundary conditions very [...] discussed by means of a
specific design examples of axial impulse and radial inflow cantilever turbines. Experimental results of
two micro turbines, which were designed and built according to the abo
pro and cons of the cantilever design compared to the axial design. The cantilever designed showed
the expected higher efficiency. Nevertheless, the axial impulse design provides many other
turbine [...] roller bearings, slide bearings or aerodynamic bearings - depending on task
• compact design, low material usage
• design can be easily adapted to different boundary conditions, fluids etc.
[...] regard to
their suitability for a so-called “micro-expander-construction-kit” which should help to design and
build an appropriate expander for any given application out of a wide range of boundary conditions
95447 Bayreuth, Germany
markus.preissinger@uni-
bayreuth.de
page
Outline
2
1. Design data of the tested supersonic micro turbine
2. The Micro-Turbine-Generator-Construction-Kit
[...] determined turbine characteristics
5. Conclusions
14.06.2017
page
3Weiß, A. P. |
1. Design data of the hypersonic micro turbine
running with hexamethyldisiloxane
14.06.2017
wheel diameter [...] mounted on generator shaft: just one set of bearings
required, no gear, no coupling
• compact design, low material usage
page
5Weiß, A. P. |
3. The ORC research plant at University of
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and try to design more suitable shape of the outlet
casing because we were expecting large flow separation
areas in this part.
2. The tested turbine and the
ORC research plant
Design of the cantilever [...] deals with a description of results from research and development of the
cantilever micro-turbine designed for the ORC power plants. The experimental turbine stage and used
numerical models are briefly described [...] in the Figure 1.
Figure 1. Architecture of the radial inflow cantilever
turbine
The turbine design including generator is really
compact and dimensions of the whole unit are rela-
tively small. Maximum
the turbine flow.
At inlet pressure 6.1 bar (closest to design) the efficiency shows a flat maximum (73.4%) at
design speed 24000 rpm. Design efficiency (1D-loss-modell) is 68.0%. Efficiency determined [...] total-to-static
efficiency of the 12 kW turbine reaches an excellent design point
performance of 73.4 %. Furthermore, its off-design operating
behaviour is very advantageous for small waste heat recovery [...] be designed and built quickly for any required power output,
any working fluid and any boundary conditions out of a wide range. The tested 12 kW micro
turbine is built in accordance to the design principles
date 2024-01-22T10:45:27Z
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generator shaft: just one set of bearings required, no
gear, no coupling
• compact design, low material usage
• design can be easily adapted to different boundary conditions, fluids etc.
[...] chapter above the advantages of a pure impulse turbine design are the
ability to process very high pressure ratios per stage and the option to design the turbine stage
with partial admission due to the [...] sufficient accuracy.
However, the disadvantage of the impulse design is the lower efficiency potential compared to
the reaction design. In an impulse stage the nozzles convert the entire required stage
date 2017-09-13T07:17:18Z
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2017-08-10T08:44:22Z
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Impulsvortrag
Prof. Dipl.-Des. Martin Frey
OTH Amberg-Weiden
Vom „Human Centered Design“ zum „Circular Design“
– wie neue Herausforderungen neue Herangehensweisen
erfordern
11:15 – 11:30 [...] haben
die Studierenden die Möglichkeit in einem 90-
minütigen Workshop die Innovationsmethode „Design
Thinking“ näher kennen zu lernen.
Hinweis
Angemeldete Studierende erhalten am Ende der [...] ETN Studientag
Der Mensch im Mittelpunkt
Beispiele und Methoden
nutzerzentrierter Designs
page
12:00 – 13:30 Uhr
Mittagspause mit Mittagessen in der OTH Mensa
13:30 –