Conference Paper
Proceedings of Building Simulation 2017: 15th Conference of IBPSA
Model-Based Control of a Hydronic Radiant Slab for Peak Load Reduction
Model-Based Control of a Hydronic Radiant Slab for Peak Load Reduction
Vasken Dermardiros1, Charalampos Vallianos1, Andreas K. Athienitis1, Scott Bucking21Concordia University, Montreal, QC, Canada 2Carleton University, Ottawa, ON, CanadaDOI: https://doi.org/10.26868/25222708.2017.486Abstract: This paper presents a model and model-based predictive control (MPC) methodology for a hydronic radiant slab system for an archetype zone that allows deep daylight penetration and cross ventilation. The methodology is applied to a cold-climate case study, the Varennes library, located near Montreal, Quebec (Canada’s first institutional net-zero energy building). We used an implicit finite difference based approach to model the heat transfer in the room and slab. The work presented lays the groundwork for the future implementation of MPC into the library and for archetype-based studies for controls. Conventionally, hydronic radiant slabs are controlled through inlet-oulet temperature differentials and based on ambient conditions correlations. Predictive measures are seldom applied which can be beneficial for peak demand reduction and shifting. The MPC algorithm here replicates a pre-cooling strategy in anticipation of mid-day solar gains. However, the effectiveness of the hydronic slab is greatly influenced by its covering favouring low thermal resistance. The methodology can be extended for other storage mediums and fine-tuned for the specific cost and performance needs of the project. Pages: 1815 - 1823 Paper: