Optimization of deterministic controls for a cooling radiant wall coupled to a PV array
Romaní Picas, Joaquim
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Thermally activated building systems (TABS) can work as thermal energy storage (TES) systems, which are useful in shifting the energy use of space cooling and heating in buildings. The present study analyses and optimizes simple deterministic control concepts for radiant wall supplied by a heat pump for cooling purposes. First, the "solar" concept was studied, which was focused on exploiting the output of a photovoltaic (PV) array. Secondly, a "peak load shifting" concept exploiting the low electricity cost and high heat pump energy efficiency during night periods was evaluated. The results showed that the "solar" concept saved between 57% and 95% in comparison to a conventional control in different PV installed capacities. Moreover, the optimized "peak load shifting" concept had lower operation cost than the conventional control with most of the PV configurations proposed. Therefore, the study showed that the investment in the PV array was fully harnessed only with specific controls. Furthermore, the "solar" control concepts were found to help achieving the goals of net-zero energy buildings by maximising self-consumption of renewable energies in the building, as well as reducing the total imported/exported energy.
Is part ofApplied Energy, 2018, vol. 229, p. 1103-1110
European research projects
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Control concepts of a radiant wall working as thermal energy storage for peak load shifting of a heat pump coupled to a PV array Romaní Picas, Joaquim; Belusko, Martin; Alemu, Alemu; Cabeza, Luisa F.; Gracia Cuesta, Alvaro de; Bruno, Frank (Elsevier, 2018)Photovoltaic panels (PV) coupled to a heat pump supplying heat to a radiant wall is a system with potential to reduce the imported energy from the grid for heating and cooling of buildings. The radiant wall works as a ...
Optimized demand side management (DSM) of peak electricity demand by coupling low temperature thermal energy storage (TES) and solar PV Saffari Tabalvandani, Mohammad; Gracia Cuesta, Alvaro de; Fernàndez Camon, César; Belusko, Martin; Boer, Dieter; Cabeza, Luisa F. (Elsevier, 2018)Cooling in the industry sector contributes significantly to the peak demand placed on an electrical utility grid. New electricity tariff structures include high charges for electricity consumption in peak hours which leads ...
Romaní Picas, Joaquim; Cabeza, Luisa F.; Pérez Luque, Gabriel; Pisello, Anna Laura; Gracia Cuesta, Alvaro de (Elsevier, 2018)Thermally activated building systems (TABS) consist of pipes or ducts embedded in the building structure. This is a well-known technology for its capability to reduce energy use for cooling buildings. Additionally, TABS ...