Development of a compressed heat energy storage system prototype
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2020
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International Institute of Refrigeration
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Compressed Heat Energy Storage (CHEST) systems are a specific variant of Pumped Thermal Energy Storage systems (PTES) based on the Rankine cycle. The CHEST system described in this work consists of a high-temperature heat pump, a high-temperature thermal energy storage system combining both latent and sensible heat storages, and an organic Rankine cycle system. The use of working fluids with a low global warming potential and zero ozone depleting potential are also considered. In this paper the design and operation modes of a CHEST system concept are presented. A numerical model was developed in TRNSYS software, which served to analyse the system´s capabilities not only as a promising power-to-heat-to-power system able to achieve high electrical roundtrip efficiencies, but also as a highly flexible energy storing system when coupled to a Smart District Heating (DH) installation. Finally, recommendations for the definition of an experimental set-up for the validation of the CHEST concept are provided.
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Publisher Copyright: © 2020 International Institute of Refrigeration. All rights reserved.
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Trebilcock , F , Ramirez , M , Pascual , C , Weller , T , Lecompte , S & Hassan , A H 2020 , Development of a compressed heat energy storage system prototype . in IIR Rankine 2020 International Conference - Advances in Cooling, Heating and Power Generation, Rankine 2020 . Refrigeration Science and Technology , vol. 2020-July , International Institute of Refrigeration , pp. 400-409 , 2020 IIR Rankine International Conference on Advances in Cooling, Heating and Power Generation, Rankine 2020 , Virtual, London , United Kingdom , 27/07/20 . https://doi.org/10.18462/iir.rankine.2020.1178
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