چكيده فارسي :
In this paper a photo-reactors for catalytic solar hydrogen
production is introduced and analyzed. To be an
economical environmentally-benign and sustainable
pathway, hydrogen should be produced from a renewable
energy source, i.e. solar energy. Solar driven water
splitting combines several attractive features for sustainable
energy utilization. The conversion of solar energy
to a type of storable energy has crucial importance.
In the first part of the entry, background information is
presented regarding different photo-reactor configurations
for water dissociation with light energy to generate
hydrogen. The photo-electrochemistry of water
splitting is discussed, as well as photocatalytic reaction
mechanisms. The design and scale-up of photo-reactors
for photo-catalytic water splitting are explained by classification
of light-based hydrogen production systems.
At the end, a new photo-catalytic energy conversion
system is introduced analyzed for continuous production
of hydrogen at a pilot-plant scale. The exergy efficiency
and exergy destruction of this system are investigated
for these systems. The light intensity is found to
be one of the key parameters in design optimization of
the photo-reactors, in conjunction with the flow rate of
catalyst suspension.
