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How to Derive and Implement a Minimalistic RC Model from Thermodynamics for the Control of Thermal Parameters for Assuring Thermal Comfort in Buildings

EasyChair Preprint no. 7119

6 pagesDate: November 28, 2021

Abstract

Heating, ventilation, and air conditioning (HVAC) systems of buildings account for a major part of global energy demand and HVAC optimization offers significant potential to improve energy efficiency. As a promising optimization technology, Model Predictive Control (MPC) can reduce the energy demand while maintaining thermal comfort in buildings, but it also requires a thermal building model. Most existing models are too complex for a reliable parameter identification from measurements or too simple to represent thermal comfort. In this paper, we derive and implement a minimalistic thermal building model that can be applied to (i) parameter identification from measurements (grey-box modeling), and (ii) control of thermal parameters for assuring thermal comfort. We derive our grey-box model from the laws of thermodynamics, heat transfer, and the electro-thermal RC analogy. As a novelty, we present not only the detailed theoretical derivation but also the open-source code for applying the identification to various buildings. The proposed minimalistic model ensures a reliable parameter estimation and requires only a few measurements of temperatures, heating, and global radiation. We identify and validate our model with measurements from a research building under real-world conditions.

Keyphrases: Building Control, building energy, grey box model, Operative temperature, parameter identification, thermal building model, thermal comfort, Wall temperature

BibTeX entry
BibTeX does not have the right entry for preprints. This is a hack for producing the correct reference:
@Booklet{EasyChair:7119,
  author = {Moritz Frahm and Felix Langner and Philipp Zwickel and Jörg Matthes and Ralf Mikut and Veit Hagenmeyer},
  title = {How to Derive and Implement a Minimalistic RC Model from Thermodynamics for the Control of Thermal Parameters for Assuring Thermal Comfort in Buildings},
  howpublished = {EasyChair Preprint no. 7119},

  year = {EasyChair, 2021}}
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