diameter 120 mm
rotational speed 24000 rpm
Laval nozzles 12
rotor blades 32
mass flow rate 0.32 kg/s
power output 12 kW
inlet pressure 6.00 bar
outlet pressure 0.32 bar
inlet temperature 176 °C
reduced. However, secondary losses due to small blade aspect ratio (blade height h to
blade chord s) are increased. To estimate ventilation and secondary losses, based on the investigation
of (Watzlawick [...] applications’, Renewable and Sustainable Energy Reviews. Pergamon, 57, pp. 1090–1109.
Kacker, S. C. and Okapuu, U. (1982) ‘A Mean Line Prediction Method for Axial Flow Turbine
Efficiency’, Journal [...] turbine for
laboratory experiments’, Energy Procedia. Elsevier, 129, pp. 1141–1148.
Quoilin, S. et al. (2013) ‘Techno-economic survey of Organic Rankine Cycle (ORC) systems’,
Renewable and S
velocity (m/s)
D diameter (m)
ER expansion ratio (-)
h enthalpy (J/kg)
Ma Mach number (-)
n rotational speed (rpm)
P power (W, kW)
p pressure (N/m2)
u circumferential velocity (m/s)
v specific [...] Car
Application,
Energies, 5, p 1751-1765
Lemort, V., Ludovic, G., Arnaud, L., Declaye, S., Quoilin, S., 2013,
A comparison of piston, screw an scroll expander for small Rankine cycle systems
P [...] Japikse, D., 2003,
Axial and Radial Turbines
Concepts NREC, ISBN 0-933283-12-0
Quoilin, S., Declaye, S., Legros, A., Guillaume, L., Lemort, V., 2012
Working fluid selection and operation maps for
micro-turbine
for small-scale Organic Rankine Cycle. Applied Thermal
Engineering Volume 140 (2018), S. 235 - 244.
[2] Weiß, A. P. et al.: Experimental investigation of a
supersonic micro turbine running [...] identifizierten Potenziale könn-
ten im Zuge einer konkreten Produktent-
wicklung realisiert werden.
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diameter 120 mm
rotational speed 24000 rpm
Laval nozzles 12
rotor blades 32
mass flow rate 0.32 kg/s
power output 12 kW
inlet pressure 6.00 bar
outlet pressure 0.32 bar
inlet temperature 176 °C
pressure
Conference Proceedings 2189, 020022 (2019); https://doi.org/10.1063/1.5138634 2189, 020022
© 2019 Author(s).
Simulation and analysis of the performance
map of a micro-ORC-turbine - Comparison
with measurements
evaluation together with the development team
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(BGBl. I S. 420) geändert worden ist
[GEMIS] IINAS Int [...] (Aus) 1 AUS BHKW 1 und 2 aus
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12 Stufe 2 BHKW 1 S2 BHKW 2 Einzelbetrieb
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14 Modulationsbetrieb 2 MOD [...] /Left
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[EnergieStG] Energiesteuergesetz vom 15. Juli 2006 (BGBl. I S. 1534; 2008 I
S. 660, 1007), das zuletzt durch Artikel 11 des [...] H2 Wasserstoff
H-Gas high (calorific) gas
H2O Wasser
H2S Schwefelwasserstoff
Heizöl EL leichtes Heizöl
Heizöl S schweres Heizöl
HKW Heizkraftwerk
IfE Institut für Energietechnik
ratios must
be taken into account, which is significantly lower for Kaczmarczyk´s machine but far higher for Seume´s
small turbine which additionally suffers from partial admission losses. Tuuru [...] Energies. 5 (2012) 1751–
1765. doi:10.3390/en5061751.
[7] V. Lemort, G. Ludovic, L. Arnaud, S. Declaye, S. Quoilin, A comparison of piston, screw an scroll
expander for small Rankine cycle systems, in: [...] Renewable and Sustainable Energy Reviews. 24 (2013) 325–342. doi:10.1016/j.rser.2013.03.040.
[14] S. Quoilin, S. Declaye, A. Legros, L. Guillaume, V. Lemort, Working fluid selection and operating maps
for
umgebaut
Ansprechpartner: Stefan Liesner,
Leitung Marketing & Politik beim
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[EnergieStG] Energiesteuergesetz vom 15. Juli 2006 (BGBl. I S. 1534; 2008 I
S. 660, 1007), das zuletzt durch Artikel 11 des [...] H2 Wasserstoff
H-Gas high (calorific) gas
H2O Wasser
H2S Schwefelwasserstoff
Heizöl EL leichtes Heizöl
Heizöl S schweres Heizöl
HKW Heizkraftwerk
IfE Institut für Energietechnik
elsevier.com/S0360-5442(16)31575-4/sref1 http://refhub.elsevier.com/S0360-5442(16)31575-4/sref1
annotation http://refhub.elsevier.com/S0360-5442(16)31575-4/sref1 http://refhub.elsevier.com/S0360-5442( [...] elsevier.com/S0360-5442(16)31575-4/sref1 http://refhub.elsevier.com/S0360-5442(16)31575-4/sref1
annotation http://refhub.elsevier.com/S0360-5442(16)31575-4/sref1 http://refhub.elsevier.com/S0360-5442( [...] elsevier.com/S0360-5442(16)31575-4/sref2 http://refhub.elsevier.com/S0360-5442(16)31575-4/sref2
annotation http://refhub.elsevier.com/S0360-5442(16)31575-4/sref2 http://refhub.elsevier.com/S0360-5442(
velocity (m/s)
D diameter (m)
ER expansion ratio (-)
h enthalpy (J/kg)
Ma Mach number (-)
n rotational speed (rpm)
P power (W, kW)
p pressure (N/m2)
u circumferential velocity (m/s)
v specific [...] Car
Application,
Energies, 5, p 1751-1765
Lemort, V., Ludovic, G., Arnaud, L., Declaye, S., Quoilin, S., 2013,
A comparison of piston, screw an scroll expander for small Rankine cycle systems
P [...] Japikse, D., 2003,
Axial and Radial Turbines
Concepts NREC, ISBN 0-933283-12-0
Quoilin, S., Declaye, S., Legros, A., Guillaume, L., Lemort, V., 2012
Working fluid selection and operation maps for
This
leads to a homogenous thermic stress field in the front and back side of the heat exchanger’s shell, where the tube
bundle is held. Apart from that, a bore pattern that is arranged in that way [...] Fig. 2
both of the relevant shells are displayed. Figure 2 (a) shows an example of the preheater’s shell in isometric view,
while the evaporator shell with the connecting pipes and flanges can be [...] calculated and the simulated exit temperature in the gas is 441 K to
437 K and for the ORC-fluid it’s 407 K to 403 K. In the case of the gas part it can clearly be recognize that the
distribution of
This
leads to a homogenous thermic stress field in the front and back side of the heat exchanger’s shell, where the tube
bundle is held. Apart from that, a bore pattern that is arranged in that way [...] Fig. 2
both of the relevant shells are displayed. Figure 2 (a) shows an example of the preheater’s shell in isometric view,
while the evaporator shell with the connecting pipes and flanges can be [...] calculated and the simulated exit temperature in the gas is 441 K to
437 K and for the ORC-fluid it’s 407 K to 403 K. In the case of the gas part it can clearly be recognize that the
distribution of
Nomenclature
c absolute velocity (m/s)
D diameter (m)
h enthalpy (J/kg)
p pressure (N/m2)
u circumferential velocity (m/s)
v specific volume (m3/kg)
w relative velocity (m/s)
∆ difference
CFD Computational [...] radial inflow cantilever turbine (Figure 4 b) benefits from this “u1
2-u2
2” -effect.
The author´s research group has recently developed small cantilever „quasi-impulse“ turbines
which do not accelerate [...] Working fluid: compressed air (pressure dew point ca. – 40°C at 10 bar)
Mass flow rate: 0,065 kg/s
Inlet pressure: 10 bar (a)
Outlet pressure: 1 bar (a)
Inlet temperature: about 20-22 °C
Rotational
Kompetenzzentrum für Kraft-Wärme-Kopplung (KoKWK)
an der OTH Amberg-Weiden.
i m.huber3@oth-aw.de
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Stadtwerke Lübeck,
Tel. 04 51 / 8 88 66 03,
bjoern.ruschepaul@swhl.de
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Februar 2017
Gut vernetzt und ganz leise
Standort: Thiebauthschule,
Ettlingen
Investor [...] bessere
Startbedingungen für KWK. V O N P E T E R F O C H T
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So [...] (GSM)
Lösungskonzepte für die e�ziente Isolationsüberwachung.
Bei BRANDES gilt: Geht nicht – gibt´s nicht!
Die besonderen Eigenscha�en von Kupfer-Mess-Schleifen erfordern
besonders geeignete Messtechniken
Stadtwerke Lübeck,
Tel. 04 51 / 8 88 66 03,
bjoern.ruschepaul@swhl.de
B
ild
: R
ei
nh
ar
d
S
ch
ul
z
Februar 2017
Gut vernetzt und ganz leise
Standort: Thiebauthschule,
Ettlingen
Investor [...] bessere
Startbedingungen für KWK. V O N P E T E R F O C H T
B
ild
: a
d
am
ic
o
/
S
hu
tt
er
st
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.c
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Bei den Ausschreibungen werden
kaum Angebote erwartet
So [...] (GSM)
Lösungskonzepte für die e�ziente Isolationsüberwachung.
Bei BRANDES gilt: Geht nicht – gibt´s nicht!
Die besonderen Eigenscha�en von Kupfer-Mess-Schleifen erfordern
besonders geeignete Messtechniken
research and development process.
List of symbols
V Velocity [m s−1]
p Pressure [Pa]
t Temperature [°C]
h Enthalpy [J kg−1 K−1]
ṁ Mass flow [kg s−1]
P Power [W]
η Efficiency [%]
Ma Mach number
Acknowledgements
diameter 120 mm
rotational speed 24000 rpm
Laval nozzles 12
rotor blades 32
mass flow rate 0.32 kg/s
power output 12 kW
inlet pressure 6.00 bar
outlet pressure 0.32 bar
inlet temperature 176 °C