Thermodynamic and economic evaluation of an innovative electricity storage system based on thermal energy storage

Attonaty, Kévin; Pouvreau, Jérôme; Deydier, Alexandre; Oriol, Jean; Stouffs, Pascal

doi:10.1016/j.renene.2019.11.087

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…Rankine cycles are a preferred solution for this, since compared to Brayton cycles they can reach similar thermal efficiencies at lower temperatures. Attonaty et al [170] presented a hybrid combined-cycle concept which uses fossil-fuel firing to increase the temperature of the air exiting the electrically charged thermal storage system. PHP based on Rankine cycles for discharging can profit from the experiences gained in CSP applications: a solar-tower system with an integrated two-tank molten-salt store can be transformed into a PHP plant by replacing the solar receiver by a component which heats the molten salt electrically; achieving estimated round-trip efficiencies in the range of 40% for systems exceeding a nominal power of 20 MWe.…”

Section: Electrical Heating and Heat-to-powermentioning

confidence: 99%

Progress and prospects of thermo-mechanical energy storage—a critical review

et al. 2021

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The share of electricity generated by intermittent renewable energy sources is increasing (now at 26% of global electricity generation) and the requirements of affordable, reliable and secure energy supply designate grid-scale storage as an imperative component of most energy transition pathways. The most widely deployed bulk energy storage solution is pumped-hydro energy storage (PHES), however, this technology is geographically constrained. Alternatively, flow batteries are location independent and have higher energy densities than PHES, but remain associated with high costs and short lifetimes, which highlights the importance of developing and utilizing additional larger-scale, longer-duration and long-lifetime energy storage alternatives. In this paper, we review a class of promising bulk energy storage technologies based on thermo-mechanical principles, which includes: compressed-air energy storage, liquid-air energy storage and pumped-thermal electricity storage. The thermodynamic principles upon which these thermo-mechanical energy storage (TMES) technologies are based are discussed and a synopsis of recent progress in their development is presented, assessing their ability to provide reliable and cost-effective solutions. The current performance and future prospects of TMES systems are examined within a unified framework and a thermo-economic analysis is conducted to explore their competitiveness relative to each other as well as when compared to PHES and battery systems. This includes carefully selected thermodynamic and economic methodologies for estimating the component costs of each configuration in order to provide a detailed and fair comparison at various system sizes. The analysis reveals that the technical and economic characteristics of TMES systems are such that, especially at higher discharge power ratings and longer discharge durations, they can offer promising performance (round-trip efficiencies higher than 60%) along with long lifetimes (>30 years), low specific costs (often below 100 $ kWh−1), low ecological footprints and unique sector-coupling features compared to other storage options. TMES systems have significant potential for further progress and the thermo-economic comparisons in this paper can be used as a benchmark for their future evolution.

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Section: Electrical Heating and Heat-to-powermentioning

confidence: 99%

Progress and prospects of thermo-mechanical energy storage—a critical review

et al. 2021

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“…The studies available in the literature are mostly focused on the analysis of either a solar thermal system with a single fixed technology, where the goal is to optimize a single component and its operational conditions or find the best size for a specific application [9,12,54,55]. Multi-objective optimization has been defined as finding a vector of decision variables while minimizing or maximizing different objective functions, given several constraints [56].…”

Section: Optimization Modelmentioning

confidence: 99%

Multi-Objective Optimization of Solar Thermal Systems Applied to Portuguese Dwellings

et al. 2020

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Solar thermal systems have been widely used to increase energy efficiency in the building sector, since the use of renewable energy sources became one of the top priorities to meet environmental targets. The main objective of this study is the thermo-economic optimization of solar thermal systems for residential building applications, considering a multi-objective approach. The simulations were performed through a MatLab code by implementing an elitist variant of Non-dominated Sorting Genetic Algorithm-II (NASGA-II). The solar collection area and the linear loss coefficient as well as the tank storage volume were defined as decision variables. A two-dimensional Pareto front was obtained, considering as objective functions the minimization of the annualized investment cost and the maximization of the solar collection efficiency. Based on the best trade-off between both objectives and considering that the solar thermal systems can operate for a period of at least 15 years, the Pareto analysis led to the conclusion that a system with an annualized investment cost between 270 and 280 €/year allows reaching a collection efficiency of 60%. After the analysis of the optimal solution points, a configuration was selected to estimate the system total purchasing cost: a panel with a solar area of 4.17 m2 and with a linear coefficient loss of 3.684 W/m2.K; a storage volume of 0.275 m3; and a pump flow rate of 0.1364 m3/h. For this configuration, we estimated a total purchasing cost of 2545.0 €, whereas the solar collector and the storage tank are the most expensive components, representing a share of 42% and 43%, respectively. These results represent a specific cost of 610.3 €/m2 per solar collection area.

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Design of the solar water heating system for local communities in Pakistan

Sadiq

Mayyas

2022

Cleaner Engineering and Technology

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Thermodynamic and economic evaluation of an innovative electricity storage system based on thermal energy storage

Cited by 6 publications

References 10 publications

Progress and prospects of thermo-mechanical energy storage—a critical review

Progress and prospects of thermo-mechanical energy storage—a critical review

Multi-Objective Optimization of Solar Thermal Systems Applied to Portuguese Dwellings

Design of the solar water heating system for local communities in Pakistan

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