By: Franyi Sarmiento, Ph.D., Inspenet, June 9, 2022
Researchers from the Polytechnic University of Madrid (UPM) in Spain and the Technical University of the North, in Ecuador, have studied the possibilities of pumped thermal energy storage systems, also called PTES for its acronym in English (Pumped Thermal Energy). Storage).
This type of system is used to absorb surplus electricity from the network and transforms it into thermal energy using a heat pump. Thermal energy is stored and later used to power a heat engine, producing electricity. The studied system uses a reversible cycle based on supercritical CO 2 to function as a heat pump and heat engine.
Among the main results of this work, the conceptual development stands out, in which the performance and cost of energy storage or LCOS (Levelized Cost of Storage) are estimated. The analysis carried out provides LCOS of €0.12/kWh and 80% performance. When comparing the cost with other technologies, this value places the PTES analyzed as one of the most profitable technologies, since it has the best values for PHS (pumped storage hydroelectricity) and PHES (pumped electric heat storage).
As Javier Muñoz Antón, a UPM researcher who has been part of the work team, points out, “the proposed system has differential factors compared to its competitors, such as the absence of geographical conditions, low wear and tear per work cycle, lower cost investment, the size of its components does not entail logistical problems in its transport and allows an easy scaling of power. All this, together with relatively conventional components, helps to promote the energy independence of other regions”.
The study is titled “Electrical energy storage using a supercritical CO 2 heat pump” and is published in the academic journal Energy Reports.
This material from the NYTC Amazings Portal has been edited for clarity, style and length.
Source NCYT Amazings : https://noticiasdelaciencia.com/art/44375/nuevo-sistema-para-el-almacenamiento-de-energia-electrica
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