Production of green H2
from sun and wind
In order to fully exploit the potential of green hydrogen production in an experimental setting, GUNT offers a system consisting of coordinated experimental components:
- Photovoltaic modules ET 255.02 and Wind power plant ET 255.04 as renewable energy sources
- Energy system ET 255 for optimised self-consumption through storage utilisation with energy management system
- AEM electrolyser ET 280 for hydrogen production
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ET 255.01 Photovoltaic simulator |
- simulation of current-voltage characteristics of photovoltaic modules
- time-controlled specification of generation and consumption profiles
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ET 255.02 Photovoltaic modules |
- mobile pivoting frame with 4 photovoltaic modules, adjustable angle of inclination
- sensors for module temperature and illuminance
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ET 255.04 Wind power plant |
ET 255.04 serves as an additional renewable energy source.
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emergency stop switch as a safety device |
ET 255 Energy system for solar and wind power
ET 255 contains all necessary networked components of an energy system.
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generator connection box with circuit breaker and overvoltage protection as a safety device |
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charge controller for power optimisation (MPP tracker) |
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LiFePO accumulator with battery management system |
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inverter for grid feed-in and stand-alone operation |
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bidirectional electricity meter with communication interface |
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grid connection |
ET 280 Modular electrolyser for H2 (AEM)
ET 280 contains an electrolyser with a stack consisting of several series-connected cells in bipolar design.
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reverse osmosis system for water purification |
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air-cooled electrolyser with anion exchange membrane (AEM) |
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gas burner for flaring the generated hydrogen |
Information on the operating principle The Anion Exchange Membrane (AEM) divides the AEM electrolyser into two half-cells. An aqueous potassium hydroxide solution circulates as the electrolyte in the anode half-cell, saturating the membrane. There is no liquid in the cathode half-cell. Water passes through the membrane and is reduced at the cathode. 4H2O + 4e– → 4OH– + 2H2 The hydrogen produced escapes, while the hydroxide ions migrate back into the anode half-cell. This produces oxygen and water at the anode. 4OH–→ 2H2O + O2 + 4e–
Hydrogen production through AEM electrolysis using renewable energy
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