Abstract
The use of renewable energy and hydrogen technology is a sustainable solution for the intermittent feature of renewable energies. Hence, the aim of the present work is to design a self-sufficient system for a one-family house by coupling a solar photovoltaic array and an anion exchange membrane water electrolyzer (AEMWE). The first step is the selection of the photovoltaic panel by using PV-SYST 7.0 software. Then, the hydrogen production system is calculated by coupling the electrolyzer and photovoltaic panel current–potential curves. A fuel cell is selected to use the hydrogen produced when solar energy is not available. Finally, the hydrogen storage tank is also estimated to store hydrogen for a design basis of four consecutive cloudy days according to the hydrogen consumption of the fuel cell. The whole system is designed by a simple procedure for a specific location in Ciudad Real (Spain) for January, which is known as the coldest month of the year. The simple procedure described in this work could be used elsewhere and demonstrated that the hydrogen production at low scale is a suitable technology to use renewable energy for self-energy supporting in a residential application without any connection to the grid.
Highlights
Renewable energy sources are the solution for the negative environmental impact of fossil fuel combustion and the dependence on oil-producing countries
Anion exchange membrane water electrolyzers (AEMWE) is a technology that starts to be available in the electrolyzer market
The design takes place in specific location in Ciudad Real (Spain), but the procedure developed in this work can be generally used elsewhere, since it implies the use of a commercial PV software and available general information
Summary
Renewable energy sources are the solution for the negative environmental impact of fossil fuel combustion and the dependence on oil-producing countries. Water electrolysis is a way to obtain pure hydrogen in combination with renewable energy such as photovoltaic or wind energy. AEMWE combines the advantage of conventional alkaline electrolysis (in terms of cost) and PEM (in terms of production capacity and purity of hydrogen), so it can become the key electrolysis technology for the future. These new designs aim at reducing ohmic overpotentials. In this way, higher current densities are achieved, improving electrolysis efficiency [7]
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