Sustainable building climate control with renewable energy sources using nonlinear model predictive control

Wei-Han Chen and Fengqi You

Renewable and Sustainable Energy Reviews, 2022, vol. 168, issue C

Abstract: Sustainable energy sources are promising solutions for reducing carbon footprint and environmental impacts within the building sectors. Reducing energy consumption while ensuring thermal comfort for occupants is now an essential task in building climate control. Two possible ways to cut down building energy consumption are implementing renewable and sustainable energy sources, such as solar energy and geothermal energy, and adopting the model predictive control method. In this study, we develop a novel nonlinear model predictive control (NMPC) framework for climate control of buildings with renewable energy systems to minimize electricity costs. A nonlinear dynamic model of the building climate and renewable energy systems, including temperature, humidity, thermal comfort, geothermal heat pump, and solar panels, is first constructed based on mass and energy balance equations. The nonlinear dynamic model is then integrated into the proposed NMPC framework, which iteratively solves a nonlinear programming problem to generate the optimal control inputs which minimize energy consumption and carbon footprints for sustainability. A simulation case study on controlling a building located on the Cornell University campus is conducted to demonstrate the capability of renewable energy sources to reduce building energy consumption using the proposed NMPC framework. The results show the NMPC framework could efficiently minimize total electricity cost and constraint violation for thermal comfort to 12.9% with no more than 0.2 of violation on predicted mean value index in different seasons. Implementing an electricity storage component could reduce the electricity cost by 19%. The results indicate better sustainability for the smart building using sustainable energy sources and the NMPC framework.

Keywords: Building climate control; Nonlinear model predictive control; Renewable energy system; Thermal comfort; Carbon footprint (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (9)

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DOI: 10.1016/j.rser.2022.112830

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