Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Optimal Control Strategies for Energy Production Systems using Buildings Thermal Mass

Charbel Salameh 1,2, Bruno Peuportier 2, Patrick Schalbart 2
1 Accenta
2 Centre Efficacité énergétique des Systèmes Mines Paristech

Abstract: The aim of this study is to develop real-time energy management strategies for HVAC systems taking into account the heat storage in building thermal mass. In fact, thermal energy production represents up to 50 % of building’s total energy consumption and 75 % of Greenhouse Gases (GHG) emissions. Different systems and storage methods can be integrated to reduce the cost and the GHG emissions related to heating, cooling and Domestic Hot Water (DHW) production in buildings. In this context, multiple studies have developed optimal control systems (such as Model Predictive Control) for optimising thermal production and/or storage systems. The results presented in these studies showed a wide range of reduction rates due to different hypotheses, models, methods and systems taken into consideration. In real time optimisation, the building model is usually separated from the thermal system. In this study, a reduced model and a continuous optimisation method were used to minimise the cost of the building’s heating. The applied strategy combined the building model and thermal mass with a Ground Source Heat Pump (GSHP) and a Borehole Thermal Energy Storage (BTES). This first approach showed promising results by reducing the cost between 10 % and 15 %. This method will be used to combine different systems and improve their performance in real-time.
Keywords: Building, optimisation, Model Predictive Control, Ground Source Heat Pump, Thermal Energy Storage
Pages: 191 - 198