Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Convolutional versus dense neural networks: comparing the two neural networks’ performance in predicting building operational energy use based on the building shape

Farnaz Nazari, Wei Yan
Texas A&M University, United States of America

Abstract: A building’s self-shading shape impacts substantially on the amount of direct sunlight received by the building and contributes significantly to building’s operational energy use, in addition to other major contributing variables, such as materials and window-to-wall ratios. Deep Learning has the potential to assist designers and engineers by efficiently predicting building energy performance. This paper assesses the applicability of two different neural networks’ structures, Dense Neural Network (DNN) and Convolutional Neural Network (CNN), for predicting building operational energy use with respect to building shape. The comparison between the two neural networks shows that the DNN model surpasses the CNN model in performance, simplicity, and computation time. However, image-based CNN has the benefit of utilizing architectural graphics that facilitates design communication.
Keywords: Artificial Intelligence, Neural Network, Optimization, Building energy performance, Building shape
Pages: 495 - 502