Abstract
The aim of this work was to propose a small-scale Concentrated Solar Power plant using conventional technologies, in order to improve their flexibility and performances, and reinforce their competitiveness compared to traditional systems. Additionally, this study analyzed the possibility of providing continuity of energy production through an optimized hybrid system, which considered thermal energy storage from a gaseous Heat Transfer Fluid, air. It also considered the possibility of recovering part of the energy of the thermodynamic cycle through an Organic Rankine Cycle system with appropriate dimensions. The final outcomes were a 170 kW CSP plant with about 805 MWh of annual electricity production with a global solar capacity of 32.5%, about 900 kWh of thermal storage daily capacity, and an ORC recovery section of 54.2 kW with a specific production of 260 MWh/y.
Highlights
IntroductionThe increasing attention to the problems linked to global warming and related climate change are constraining, pushing the central Governments to enclose the emissions of greenhouse gases, especially
The increasing attention to the problems linked to global warming and related climate change are constraining, pushing the central Governments to enclose the emissions of greenhouse gases, especiallyCO2, with the aim of limiting the increase of Earth’s surface mean temperature within the limits proposed in 2015 [1]
It is widely accepted that the maximum CO2 concentration of 450 ppm cannot be exceeded, in order to maintain this increase below 2 ◦ C with respect to preindustrial temperature levels—to date, atmospheric CO2 concentration reached the value of 416 ppm in June 2020 [2]
Summary
The increasing attention to the problems linked to global warming and related climate change are constraining, pushing the central Governments to enclose the emissions of greenhouse gases, especially. CO2 , with the aim of limiting the increase of Earth’s surface mean temperature within the limits proposed in 2015 [1]. The interventions proposed to contain the effects of this temperature rise (linked to high CO2 concentrations) are mitigation and adaptation. The two main actions, implemented on a global scale, provide for the energy efficiency of processes and sectors of consumption and alternative production of energy using renewable energy sources. In spite of the promotion of energy efficiency measures and renewable energy utilization, a big part of the energy demand is still satisfied by fossil fuels. In 2019, world fossil fuel share was 84.3% with renewable energy sources (RES)
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