Abstract
In the last years, the European energy policy has required to increase the share of renewable energy sources in the national energy systems. It is important to diversify the energy system not to bring about a global crisis resulting from the fundamental lack of electricity. Unfortunately renewable sources are unstable and generate several problems during integration with the power grid. The solution is to store additional energy produced from renewable sources. In this way, energy can be used when there is a need. The paper discusses the study of the Power-to-Gas-to-Power installation using electrolysis and methanation processes at the energy storage stage and gas expanders during energy discharges. In addition, a part of the Heat Recovery Steam Generation installation has been implemented. The purpose of the work was to determine the impact of a given Heat Recovery Steam Generation installation on the efficiency of the entire installation and flue gas temperature at the outlet from Heat Recovery Steam Generator.
Highlights
The demand for energy is constantly growing
Electrical energy obtained from the gas expander system is reduced by the work of the CO2 compressor and the work of a pump
The output power of the system is expressed as the difference of the gas expander power output and the CO2 compressor power input
Summary
The demand for energy is constantly growing. Globally the energy sector mainly focuses on the exploitation of fossil fuels for energy production. Biomass is considered in many countries in the world as a renewable source, its energetic use is associated with the emission of harmful substances For this reason, currently, in accordance with the law of the European Union (which is courtially questioned), biomass is not a renewable source. The member states of the European Union have committed to increasing the share of energy from renewable sources to 30% by 2030 [1,2,3] Such legal files as [4,5], are focused on increasing the use of renewable energy sources and pay attention to reducing pollutant emissions and increasing energy security, understood as the diversification of fuels used for energy production. With the use of renewable energy sources installations, several unfavourable aspects are associated, such as production unpredictability, lack of continuity of energy supply or terrain conditions
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