Performance comparison of water towers and combined pumped hydro and compressed gas system and proposing a novel hybrid system to energy storage with a case study of a 50 MW wind farm

IF 4.3 3区工程技术 Q1 MECHANICS

Journal of Non-Equilibrium Thermodynamics Pub Date : 2025-02-27 DOI:10.1515/jnet-2024-0102

Amin Hadidi

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Abstract

In general, the most important method of energy storage at the power plant scale is the pumped hydro method, which has been developed in two main models to improve its performance, which is pumped hydro combined with compressed gas (PHCCG) and pumped hydro in closed towers (PHWT). In this research, to answer which of these methods is more suitable, in the form of a case study, both systems were designed to store the generated energy in the Aghkand wind farm with a nominal power of 50 (MW), and the performance of both was completely compared with each other. The findings indicated that the efficiency of the PHWT method was higher, but on the other hand, the water requirement of the PHCCG method was much lower than the PHWT method. Also, in an innovative way, the PHWT system was presented with a combination of towers of different classes and the performance of each was investigated. Finally, by combining both PHWT and PHCCG systems, a new hybrid system (HPHWTCG) was proposed. By using this hybrid system, the advantages of both methods can be used at the same time and the disadvantages of each method can be eliminated to a great extent. The efficiency of PHWT and PHCCG is 65 % and 45 % respectively. The efficiency of HPHWTCG is between these two values based on its structure.

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来源期刊

Journal of Non-Equilibrium Thermodynamics 物理-力学

CiteScore

9.10

自引率

18.20%

发文量

审稿时长

1 months

期刊介绍： The Journal of Non-Equilibrium Thermodynamics serves as an international publication organ for new ideas, insights and results on non-equilibrium phenomena in science, engineering and related natural systems. The central aim of the journal is to provide a bridge between science and engineering and to promote scientific exchange on a) newly observed non-equilibrium phenomena, b) analytic or numeric modeling for their interpretation, c) vanguard methods to describe non-equilibrium phenomena. Contributions should – among others – present novel approaches to analyzing, modeling and optimizing processes of engineering relevance such as transport processes of mass, momentum and energy, separation of fluid phases, reproduction of living cells, or energy conversion. The journal is particularly interested in contributions which add to the basic understanding of non-equilibrium phenomena in science and engineering, with systems of interest ranging from the macro- to the nano-level. The Journal of Non-Equilibrium Thermodynamics　has recently expanded its scope to place new emphasis on theoretical and experimental investigations of non-equilibrium phenomena in thermophysical, chemical, biochemical and abstract model systems of engineering relevance. We are therefore pleased to invite submissions which present newly observed non-equilibrium phenomena, analytic or fuzzy models for their interpretation, or new methods for their description.