Bayreuth, FAN CO. 14,
95447 Bayreuth, Germany
markus.preissinger@uni-
bayreuth.de
Outline
2
1. Design data of the tested supersonic micro turbine
2. The Micro-Turbine-Generator-Construction-Kit
3. [...] Experimentally determined turbine characteristics
5. Conclusions
14.06.2017
3Weiß, A. P. |
1. Design data of the hypersonic micro turbine
running with hexamethyldisiloxane
14.06.2017
wheel diameter [...] directly mounted on generator shaft: just one set of bearings
required, no gear, no coupling
• compact design, low material usage
5Weiß, A. P. |
3. The ORC research plant at University of Bayreuth
14.06
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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
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teaching" for his particularly innovative and sustainable didactic concept "Ideas competitions as a design framework in university education". Learn more about his didactic concept here oder call up the [...] Teaching” award for his particularly innovative and sustainable didactic concept “Idea competitions as a design framework in higher education”. Find out more about his didactic concept here or view the certificate
22.4,
which is well above the design value of (PR design = 18.75). Hence, our design process worked well for the
axial turbine but failed somehow in meeting the design point of the cantilever turbine [...] surpassing the axial design in the region of design pressure
ratio (PR = 18.75) probably due to the design procedure. Furthermore, a local minimum in efficiency occurs
just at design pressure ratio. We [...] that a cantilever design is a reasonable complement to typical axial impulse turbines,
4. and to provide off-design characteristics of efficiency and swallowing capacity for future design
and simulation
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
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
Welcome Services Study with VisaFlow: Your partner for your journey to Germany VisaFlow is a web app designed to ease the transition of international students to Germany. Their app provides detailed, step-by-step
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Lo, C. K., Hew, K. F., & Chen, G. (2017). Toward a set of design principles for mathematics flipped classrooms: A synthesis of
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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 inlet [...] 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
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t 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 [...] the 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 [...] 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 standard applications. The design chain
t 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 [...] the 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 [...] 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 standard applications. The design chain
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