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Advantages Hydrogen Generator hydrogen by electrolysis.


The Alternative Energy Lab at the University of Antioquia developed a hydrogen generator by electrolysis of water, which is a very important starting point for the development of this technology in our environment and contribute in the production of energy by unconventional methods contributing to the development of our society. The generator has a producion of 8.32 liters / h H2 and an efficiency of 64.83%.

This generator is composed of 6 electrolytic cells produced in modular form to facilitate assembly and disassembly in the investigation of new materials for diaphragms, electrodes and number of cells to determine the efficiency of the system. Each cell has the following parts:

Diaphragms for microfiltration of gases consisting of a Teflon film with pores of 0.5 mm, rolled over on a polypropylene support. These diaphragms must meet three main requirements:

permeable to ions H3O + and OH-
Waterproof for H2 and O2.
resistant against the electrolyte temperature and high pressure.

diaphragm plays an important role in the electrolysis cells in view of:

A high purity gases.
The total yield of hydrogen generator. Packaging
to facilitate mechanical seal of the cells. You



cell generator has the following components:

Two stainless steel filters, each of ø 3 .5 "x 8" tall, in order to retain some steam KOH. At the output of the filters teflon hose connects valves, check and finally the storage tanks.

Storage tanks are manufactured in stainless steel ø8 "x16" tall (tank H2) and ø8 "x 8" high (O2 tank). The tanks have the following accessories:

a) check valves at the entrance, security device to prevent flashback

b) Bourdon type Pressure Gauges 0-60psi

c) outlet valve.

The generator also has other small accessories that allow connection of electrolytic cell. These are: 12m. HDPE Hose 0.25 "120psi, 2 valves 0.25" NPT HH, several fittings 0.25 "NPT, needle valves.

The electrolytic medium is used in a solution generdor KOH, the electrodes used were nickel and energy required for electrolysis of water is supplied by a system that has the panels fotolvoltaicos laboratory facilities. This makes the laboratory system is autonomous and independent of the electrical interconnection network.


The hydrogen produced by the generator is consumed by a burner designed and manufactured in the laboratory for this purpose.

Source: [University of Antioquia]