<p style="text-align: justify">Recently, Due to the shortage of energy in human society and harmful pollutants from fossil fuel combustion, For example, the greenhouse effect, acid rain and pollution, ozone layer depletion, which are posing great danger for our environment and eventually for the life in our planet. so, the development of new energy sources replace existing fossil fuel systems has become a requirement for human development and survival. Hydrogen energy is a unique secondary energy source. Because of its clean and non-polluting characteristics, it is getting more and more attention from all countries in the world.&nbsp; In the future, in addition to hydrogen manufacturing technology, mass production and development of high efficiency, low cost, reliable performance and hydrogen purification technology will be the key to revitalizing the hydrogen energy market economy. Electrochemical hydrogen pumps or compressors are a new type of hydrogen separation and purification equipment. Its structure is simple and similar to the structure of proton exchange membrane fuel cell, and also in electrolysis mode, hydrogen can be hydrogenated at the anode and then reduced at the cathode. The main advantage of electrochemical hydrogen compressors is that hydrogen separation and compression can be carried out in one step, and the power consumption acts only on the molecules of hydrogen that pass through the membrane layer, requiring little energy. In this laboratory, the technology of the proton exchange membrane fuel cell was used to design the electro-chemical hydrogen pump and a large number of experiments were carried out. The basic compression performance of electro-chemical hydrogen compressor was studied by theoretical calculation and simulation calculation.</p><p style="text-align: justify">The results show that increasing the power supply voltage under the same experimental conditions increases the reaction rate of the electrochemical hydrogen compressor. Increasing the anode chamber pressure can also increase the reaction rate of the electrochemical hydrogen compressor. However, the residual air in the experimental equipment reduces the contact between the electrode and hydrogen, resulting in poor redox reactions. Experiments have shown that single-electrochemical hydrogen compressors have better compression rates and reaction rates than dual-electrochemical hydrogen compressors. The time taken for the outlet pressure to reach 6 bar was measured experimentally and the experimental results were compared with the theoretical calculations. The error is up to 7%. Because the error is small, we concluded that the reliability of theoretical calculations was secured, and the time taken for the outlet pressure to reach 700 bar was also calculated by theory.</p>

Electro-Chemical Hydrogen Compressor Modeling

Paper Proceedings: https://asmedigitalcollection.asme.org/IMECE/IMECE2021/volume/85543

ASME 2021 International Mechanical Engineering Congress and Exposition (IMECE2021)

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