To improve environmental safety, much attention is currently paid to the use of alternative energy sources as energy carriers, which significantly reduces the toxicity of exhaust gases. Considerable attention is paid to the introduction of alternative types of energy based on hydrogen fuel cells into the agricultural sector. In recent years, the use of electric energy as a source has been widely used for automobile transport, as well as the use of hybrid cars, which combine the use of liquid fuel and energy storage devices in the form of electric batteries, as a result, environmental pollution is reduced. When equipping power systems with fuel cells based on proton exchange membrane, the main criterion for efficiency is still the efficiency coefficient, which makes it possible to reliably assess the technical perfection of the proposed energy converter. The obtained analytical relationships make it possible to calculate the efficiency of fuel cell in working zone of an ideal battery. Experimentally obtained volt-ampere dependences at series and parallel connection of two thermopiles at purge time of 50 and 100 seconds make it possible to determine voltage at the specified current, as well as to identify the influence of various factors on the operation of proton exchange membrane fuel cells. It makes it possible to carry out a comparative analysis of fuel cells and various methods of connecting them; adequately assess the energy efficiency of fuel cells, since it is not advisable to calculate values pointwise, it is desirable to predict the result in a wide range of load. The combined fuel cells based on proton exchange membrane connection makes it possible to increase the output voltage to 38%. The studies made it possible to outline ways to increase the efficiency of the use of hydrogen fuel cells, establishing the use of a combined compound of fuel cells on energy resources, and timely ensuring the supply of appropriate reagents.

Dvoinova Natalia F., Abramova Svetlana V., Boyarov Evgeny N.

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