Thermodynamic analysis of high-temperature pumped thermal energy storage systems: Refrigerant selection, performance and limitations
One of the bottlenecks for a wider implementation of renewable energies is the development of efficient energy storage systems which can compensate for the intermittency of renewable energy sources. Pumped thermal energy storage (PTES) is a very recent technology that can be a promising site-indepen...
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Elsevier
2020-12-01
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author | Abdelrahman H. Hassan Laura O’Donoghue Violeta Sánchez-Canales José M. Corberán Jorge Payá Henning Jockenhöfer |
author_facet | Abdelrahman H. Hassan Laura O’Donoghue Violeta Sánchez-Canales José M. Corberán Jorge Payá Henning Jockenhöfer |
author_sort | Abdelrahman H. Hassan |
collection | DOAJ |
description | One of the bottlenecks for a wider implementation of renewable energies is the development of efficient energy storage systems which can compensate for the intermittency of renewable energy sources. Pumped thermal energy storage (PTES) is a very recent technology that can be a promising site-independent alternative to pumped hydro energy storage or compressed air energy storage, without the corresponding geological and environmental restrictions. Accordingly, this paper presents a full thermodynamic analysis of a PTES system consisting of a high-temperature heat pump (HTHP), which drives an organic Rankine cycle (ORC) by means of an intermediate high-temperature thermal energy storage system (HT-TES). The latter combines both latent and sensible heat thermal energy storage sub-systems to maximize the advantage of the refrigerant subcooling. After validating the proposed model, several parametric studies have been carried out to assess the system performance using different refrigerants and configurations, under a wide range of source and sink temperatures. The results show that for a system that employs the same refrigerant in both the HTHP and ORC, and for a latent heat thermal energy storage system at 133ºC, R-1233zd(E) and R-1234ze(Z) present the best performance. Among all the cases studied with a latent heat thermal energy storage system at 133°C, the best system performance, also considering the impact on the environment, has been achieved employing R-1233zd(E) in the HTHP and Butene in the ORC. Such a system can theoretically reach a power ratio of 1.34 under HTHP source and ORC sink temperatures of 100 and 25°C, respectively. |
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spelling | doaj.art-dbf36d33a30b4f4581ee519d7fa6d6342022-12-21T22:31:54ZengElsevierEnergy Reports2352-48472020-12-016147159Thermodynamic analysis of high-temperature pumped thermal energy storage systems: Refrigerant selection, performance and limitationsAbdelrahman H. Hassan0Laura O’Donoghue1Violeta Sánchez-Canales2José M. Corberán3Jorge Payá4Henning Jockenhöfer5Instituto Universitario de Investigación en Ingeniería Energética, Universitat Politècnica de València, 46022, Valencia, Spain; Mechanical Power Engineering Department, Faculty of Engineering, Zagazig University, Zagazig 44519, EgyptInstituto Universitario de Investigación en Ingeniería Energética, Universitat Politècnica de València, 46022, Valencia, SpainInstituto Universitario de Investigación en Ingeniería Energética, Universitat Politècnica de València, 46022, Valencia, SpainInstituto Universitario de Investigación en Ingeniería Energética, Universitat Politècnica de València, 46022, Valencia, SpainInstituto Universitario de Investigación en Ingeniería Energética, Universitat Politècnica de València, 46022, Valencia, Spain; Corresponding author.German Aerospace Center (DLR), Institute of Engineering Thermodynamics, Pfaffenwaldring 38, 70569, Stuttgart, GermanyOne of the bottlenecks for a wider implementation of renewable energies is the development of efficient energy storage systems which can compensate for the intermittency of renewable energy sources. Pumped thermal energy storage (PTES) is a very recent technology that can be a promising site-independent alternative to pumped hydro energy storage or compressed air energy storage, without the corresponding geological and environmental restrictions. Accordingly, this paper presents a full thermodynamic analysis of a PTES system consisting of a high-temperature heat pump (HTHP), which drives an organic Rankine cycle (ORC) by means of an intermediate high-temperature thermal energy storage system (HT-TES). The latter combines both latent and sensible heat thermal energy storage sub-systems to maximize the advantage of the refrigerant subcooling. After validating the proposed model, several parametric studies have been carried out to assess the system performance using different refrigerants and configurations, under a wide range of source and sink temperatures. The results show that for a system that employs the same refrigerant in both the HTHP and ORC, and for a latent heat thermal energy storage system at 133ºC, R-1233zd(E) and R-1234ze(Z) present the best performance. Among all the cases studied with a latent heat thermal energy storage system at 133°C, the best system performance, also considering the impact on the environment, has been achieved employing R-1233zd(E) in the HTHP and Butene in the ORC. Such a system can theoretically reach a power ratio of 1.34 under HTHP source and ORC sink temperatures of 100 and 25°C, respectively.http://www.sciencedirect.com/science/article/pii/S2352484720302432High-temperature heat pumpOrganic Rankine cycleThermal energy storage systemModellingRefrigerants |
spellingShingle | Abdelrahman H. Hassan Laura O’Donoghue Violeta Sánchez-Canales José M. Corberán Jorge Payá Henning Jockenhöfer Thermodynamic analysis of high-temperature pumped thermal energy storage systems: Refrigerant selection, performance and limitations Energy Reports High-temperature heat pump Organic Rankine cycle Thermal energy storage system Modelling Refrigerants |
title | Thermodynamic analysis of high-temperature pumped thermal energy storage systems: Refrigerant selection, performance and limitations |
title_full | Thermodynamic analysis of high-temperature pumped thermal energy storage systems: Refrigerant selection, performance and limitations |
title_fullStr | Thermodynamic analysis of high-temperature pumped thermal energy storage systems: Refrigerant selection, performance and limitations |
title_full_unstemmed | Thermodynamic analysis of high-temperature pumped thermal energy storage systems: Refrigerant selection, performance and limitations |
title_short | Thermodynamic analysis of high-temperature pumped thermal energy storage systems: Refrigerant selection, performance and limitations |
title_sort | thermodynamic analysis of high temperature pumped thermal energy storage systems refrigerant selection performance and limitations |
topic | High-temperature heat pump Organic Rankine cycle Thermal energy storage system Modelling Refrigerants |
url | http://www.sciencedirect.com/science/article/pii/S2352484720302432 |
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