Transient heat transfer modelling in buildings based on the thermo-electric analogy

This chapter explores dynamic thermal modelling methodologies for buildings by examining simplified techniques, i.e., lumped parameter approach and thermal RC networks. These methodologies are designed to strike a balance between computational efficiency and the level of accuracy needed to model and understand transient thermal behaviour effectively. By transforming complex physical thermal interactions into simplified models, these approaches make it feasible to perform both short-term dynamic analyses and long-term energy assessments. The chapter merges theoretical insights on these methodologies with practical guidance through detailed examples that demonstrate how to implement a lumped-RC model. These examples include step-by-step applications of the model, enabling readers to understand the principles and techniques involved in simplifying thermal representations of building components. Furthermore, the chapter outlines a detailed case study that evaluates a simplified building configuration. This case study highlights the use of the lumped-RC model to perform transient analyses on critical building components, such as walls, roofs and basements. It examines the dynamic heat transfer processes affecting these components and provides a thorough assessment of their impact on energy consumption.