Page 17 - Introduction to Transfer Phenomena in PEM Fuel Cells

6 Introduction to Transfer Phenomena in PEM Fuel Cells
On 25 October 2011, Brandenburg Minister-President Matthias Platzeck
inaugurated this first hybrid plant of its kind combining wind, hydrogen and
biogas in the presence of representatives of partner companies Enertrag AG,
Total Deutschland GmbH, Vattenfall and Deutsche Bahn.
This facility is able to transform wind energy into hydrogen as a storage
medium and energy vector! The hydrogen production capacity of the
3
3
electrolyzer installed is approximately 120 Nm /h of hydrogen and 60 Nm /h
of oxygen, with a purity of hydrogen reaching 99.997%. The pressure of the
flue gas is about 15–20 mbar.
A compression system is used to achieve the pressure of 42 bar, and a set
of five pressure vessels with a total capacity of 1,350 kg of hydrogen at the
same compressor outlet pressure [MIS 13].

This technology is an important advance for the energy sector, since it
allows the storage of wind power and its injection into the grid, according to
need (see Figure 1.5).

Since the end of 2011, energy in the form of hydrogen has been stored
and used at the Berlin–Brandenburg International Airport power station.

Figure 1.5. Schematic of the Prenzlau hybrid power plant [MIS 13]