Patent ID: 7628017

Claim:
A device for the production of hydrogen in desert or arid areas by means of solar energy comprising: solar collectors which produce a warm fluid in the daytime by means of solar energy; a reservoir where said warm fluid is stored, said stored warm fluid being a permanent warm thermal source; a first closed circuit which allows the circulation of said warm fluid in the daytime between said solar collectors and the reservoir containing the stored warm fluid, said closed circuit of warm fluid contains a pump; thermal dissipators which produce a cold fluid at nighttime; a reservoir where said cold fluid is stored, said stored cold fluid being a permanent cold thermal source; a second closed circuit which contains a working fluid which is used according to a Rankine cycle; a third closed circuit which allows the circulation of said cold fluid at nighttime between said thermal dissipators and said reservoir containing the stored cold fluid, said third closed circuit of cold fluid contains a pump; an evaporator in which said working fluid is evaporated using said warm thermal source, said evaporator being placed inside the warm fluid reservoir; a turbine driven by the expansion of the evaporated working fluid; a condenser in which said working fluid is then condensed using said cold thermal source, said condenser being placed inside the cold fluid reservoir; a pump which allows the circulation of said working fluid between said condenser and said evaporator; an alternator coupled to said turbine, said alternator producing electricity; an electrolytic cell which uses the electricity produced by said alternator to realize the electrolysis of water in order to produce hydrogen.