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
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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 thermal storage system (TES) allowing storage of the PV output and, thus, peak load shifting. However, the management of these technologies is complex due to the dynamics of the system. This paper presents several control concepts with different purposes such as shifting energy use to off-peak periods, maximizing self-consumption of PV output, and minimization of imported energy from the grid. An experimentally validated numerical model from previous research was used to investigate and compare the different proposed control concepts. Results showed that charging the wall with solar energy resulted in higher overall energy use of the heat pump, while the imported grid energy was significantly reduced, thanks to self-consumption.
Is part ofRenewable Energy, 2018, vol. 118, p. 489-501
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Romaní Picas, Joaquim; Belusko, Martin; Alemu, Alemu; Cabeza, Luisa F.; Gracia Cuesta, Alvaro de; Bruno, Frank (Elsevier, 2018)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 ...
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Romaní Picas, Joaquim; Cabeza, Luisa F.; Gracia Cuesta, Alvaro de (Elsevier, 2018-01)An experimental set-up consisting of a house like cubicle exposed to outdoor weather was used to validate a numerical model of a radiant wall. The 2D transient finite volume model used as inputs the indoor temperature, ...