ES - Relatórios técnicos
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Browsing ES - Relatórios técnicos by Subject "Energy storage"
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- NewSOL Project: Implementation and validation tests for Fluent : Case 0Publication . Seram, Victor; Lima, Maria Margarida de Lemos Canedo Giestas; Azevedo, PedroABSTRACT: The present report was made according to the implementation of “Fluent: Case 0”1 of the NewSol Project (Grant nº 720985). The Ansys computational package software was used for the conducted simulations. A 2D geometry symmetrical at the middle axis was constructed. Several meshes were both made and simulated for the minimum computational cost. For simplicity of the problem and at this early stage of development of the model, the ullage space was taken to be filled with HTF (Heat Transfer Fluid). Although HTF fills the ullage space in the tank, this is not in good agreement with the condition described in Case 0 which considers air as the medium. All the simulations were performed with steady state conditions. However, in the future transient state would be used.
- NewSOL Project: Thermocline degradationPublication . Azevedo, PedroABSTRACT: 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.