NewSOL Project: Thermocline degradation

• Autor(a) principal: Azevedo, Pedro
• Data de Publicação: 2021
• Tipo de documento: Relatório
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.9/4179
• topic: Energy storage; Thermocline tank; Modelling; Simulation

ABSTRACT: According to Task 6.3 of DOA, LNEG was supposed “to define an appropriate monitoring scheme and set of tests to collect the experimental data from the thermocline tank (TCT), necessary to the evaluation of the thermodynamic performance of the prototype and improvement and validation of the computational models”. However, due to known delays on the construction phase of the thermocline tank, the experimental period and its related data is not available, at the moment. Nevertheless, although the validation of the computational models was not possible, some additional adaptions to the models and analysis were developed that can impact namely the assessment of the cycling effect over effective thermal capacity, including for an upscaled solution. This report approaches the problem of the thermocline tank (TCT) degradation that can develop after consecutive cycles. Besides the control strategy, calculations were performed towards the assessment of the prototype TCT performance considering the control scheme disclosed in D7.91 and in some literature2. An alternate operation strategy is proposed, and its performance assessed and, finally, an upscaled TCT, also disclosed in D7.9, is also assessed considering the alternate operation strategy.