Thermal dynamic modelling and temperature controller design for a house

Bastida, Hector, Ugalde Loo, Carlos E. ORCID: https://orcid.org/0000-0001-6361-4454, Abeysekera, Muditha ORCID: https://orcid.org/0000-0002-1743-3254, Qadrdan, Meysam ORCID: https://orcid.org/0000-0001-6167-2933 and Wu, Jianzhong ORCID: https://orcid.org/0000-0001-7928-3602 2019. Thermal dynamic modelling and temperature controller design for a house. Energy Procedia 158 , pp. 2800-2805. 10.1016/j.egypro.2019.02.041

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Abstract

Heat consumption management and effective temperature control strategies to meet heat demand in residential and office buildings have become an important aspect within energy management. A thermal dynamic model of a building is not only necessary to estimate the energy consumption under different operating conditions but also to design effective controllers. This paper presents a classical control approach for the indoor temperature regulation of buildings. State-space and transfer function models of house thermal behaviour are developed. These are obtained from first principles of heat transfer and their analogy with electrical systems. To capture a realistic behaviour of heat transfer, the proposed models consider parametric uncertainties. A frequency response-based approach is used to obtain a reduced order system that facilitates control system design. The models have been implemented in MATLAB/Simulink and a PI controller has been designed to maintain a comfortable indoor temperature in the building. Simulation results show that the controller effectively regulates temperature despite system disturbances. An energy saving of around 8% comparing the proposed controller to a traditional on/off controller is achieved.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	1876-6102
Date of First Compliant Deposit:	25 April 2019
Last Modified:	02 Jan 2025 22:15
URI:	https://orca.cardiff.ac.uk/id/eprint/121877

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