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Solar power station – an element of dispersed power system

Solar power station – an element of dispersed power system. Wroclaw Division of Electrotechnical Institute; Wroclaw University of Technology, Dep. of Electrical Eng. Bolesław Mazurek. Solar power system. T-s Diagram of Rankine cycle. Theoretical and real characteristics of fuel cell.

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Solar power station – an element of dispersed power system

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  1. Solar power station – an element of dispersed power system Wroclaw Division of Electrotechnical Institute; Wroclaw University of Technology, Dep. of Electrical Eng. Bolesław Mazurek

  2. Solar power system

  3. T-s Diagram of Rankine cycle

  4. Theoretical and real characteristics of fuel cell

  5. Vehicle mechanism hydrogen H2O oxygen in the middle ion H3O oxygen H3O

  6. PEM Fuel Cellreactions: Anode reaction: 2H2 4H+ + 4e- Cathode reaction: O2 + 4H+ + 4e- 2H2O Summary raction: 2H2 + O2 2H2O

  7. Our construction of PEMFC

  8. V-I characteristics of IEL and commercial PEMFC

  9. hydrogen oxygen FUEL SOFC AIR electrolyte Pt cathode Pt anode SOFC Fuel Cellreactions: Cathode reaction: 1/2O2 + 2e- O2- Anode reactions: H2 + O2-  H2O + 2e- CO + O2- CO2 + 2e- CH4+4O2- 2H2O + CO2 + 8e- Summary reactions: H2 + 1/2O2 H2O

  10. New electrolytes elaborated in IEL/OW for SOFC application Also investigation of scandium stabilized zirconium oxide (e.g. ScSZ)

  11. Fig.1 Diagram of the system for measurement of the ionic conductivity,DC four probe Wagner method. Fig.2 Diagram of the test stand for measurement of the ionic conductivity, IS impedance spectroscopymethod. Ionic conductivity measurements

  12. Typical Arhenius characteristics of electrolytes

  13.  - in reducing atmosphere  - in oxide Typical impedance spectra of electrolyte

  14. Our tubular SOFC

  15. SOFC V-I characteristics in the function of temperature

  16. Electrolyte resistance ScSZ

  17. Designe of fuel cell test stand

  18. Our fuel cell test stand

  19. PEMFC stack specification Performance DC voltage 10 V Current 50 A Nominal current density 500 mA/cm² at 0.7 V (cell) Nominal power rating 500 W Stack efficiency >40% at 500 W Cell number 16, effective area of each cell 100 cm² Air requirement Nominal flow 35 SLPM Use efficiency 40% at 500 W Humidity 70-90% RH Inlet pressure 1.0-2.5 bar Operating conditions Temperature 70-80 °C Pressure 1.0-2.5 bar Coolant DI water Coolant Flow 3.5 l/min. Physical Width 17 cm Height 11 cm Depth 20 cm Weight 12 kg Hydrogen fuel requirement H2 Commercial grade (CO < 1ppm) Nominal flow 7.5 SLPM Humidity 70-95% RH Inlet pressure 1.0-2.5 bar

  20. Characteristic of commercial 500 W PEM stack

  21. Thank you for your attention !

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