Start-up Research on The Laboratory Micro CHP ORC Test Stand - - PowerPoint PPT Presentation

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Start-up Research on The Laboratory Micro CHP ORC Test Stand - - PowerPoint PPT Presentation

Sep 12, 2022 142 likes •320 views

Start-up Research on The Laboratory Micro CHP ORC Test Stand Sebastian Byku, ukasz Brekacz, Grzegorz ywica, Piotr Klonowicz System description Features: -Fluid: HFE7100 -Nominal power: 3 kW -Inlet pressure: 12 bar(a) -Inlet temperature:

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SLIDE 1

Start-up Research on The Laboratory Micro CHP ORC Test Stand

Sebastian Bykuć, Łukasz Breńkacz, Grzegorz Żywica, Piotr Klonowicz

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SLIDE 2

System description

Features:

  • Fluid: HFE7100
  • Nominal power: 3 kW
  • Inlet pressure: 12 bar(a)
  • Inlet temperature: 170 ºC
  • Outlet pressure: 1.18 bar(a)
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SLIDE 3

System description

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SLIDE 4

Object characteristics

Gear pump Gear pump Prototype of peripheral pump

System description

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SLIDE 5

Object characteristics

Design paramters: Rotational speed: 35 000 [rpm] Internal power: 3.26 [kW] Working medium: HFE 7100 Design paramters: Rotational speed: 24 000 [rpm] Internal power: 3.00 [kW] Working medium: HFE 7100

Cooperation with Lodz University of Technology (prof. Z. Kozanecki Team)

System description

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SLIDE 6

Object characteristics

Model of the ORC power plant test stand Real construction

System description

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SLIDE 7

Object characteristics

Flowmeter

System description

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SLIDE 8

Object characteristics

Temperature and pressure sensors

System description

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SLIDE 9

System description

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SLIDE 10

100 200 300 400 500 600 700 800 900 1000 100 200 300 400 500 600 700 Q (kg/h) Time (s)

Q1 Q2 Q3

Flow rate I II III

Results

Mass flow rates (Q1- total flow rate, Q2-by-pass flow rate, Q3-turbine flow rate)

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SLIDE 11

100 200 300 400 500 600 700 800 900 1000 1 2 3 4 5 6 7 8 9 10 Pressure of HFE 7100 (bar) Time (s)

P1 after evaporator P2 before turbine P3 after turbine P4 after regenerative heat exchanger P5 after condenser P6 after pump

Pressure I II III

Results

Pressure curves in the time domain obtained during startup

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SLIDE 12

100 200 300 400 500 600 700 800 900 1000 20 40 60 80 100 120 140 160 Temperature (°C) Time (s)

T1 after pump T2 before turbine T3 after turbine T4 after regenerative heat exchanger T5 after condenser T6 after pump

Temperature I II III

Temperature curves in the time domain obtained during startup

Results

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SLIDE 13

100 200 300 400 500 600 700 800 900 1000 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 22000 24000 26000 Turbine speed (rpm) Time (s) Turbine speed I II III

Results

Rotational speed of turbogenerator in the time domain obtained during startup

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SLIDE 14

100 200 300 400 500 600 700 800 900 1000 200 400 600 800 1000 1200 1400 Electric power (W) Time (s) Electric power I II III

Results

Power generated in the time domain obtained during startup

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SLIDE 15

Results

Electric power plots

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SLIDE 16
  • We have designed a fully functional micro CHP system with a hermetic

microturbine based on a single, highly loaded stage.

  • The microturbine is fully hermetic
  • The gas bearings fully support the shaft even at low rotational speed,

the turbine operation is very quiet

  • The detaled measurements of the efficiencies should be performed
  • "Real-life" conditions should be simulated and the system behavior

should be examined Conclusions

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SLIDE 17

Thank you for your attention

The laboratory test stand of the ORC micro power plant

The research works presented in this presentation were financed by the project POIG.01.01.02-00-016/08 “Model agroenergy complexes as an example of distributed cogeneration based on local renewable energy sources” Sebastian Bykuć, Łukasz Breńkacz, Grzegorz Żywica, Piotr Klonowicz