Improving Indoor Room Air Conditioning Using PID Control

Year : 2025 | Volume : 12 | Issue : 01 | Page : 1 21
    By

    C. Armenta -Déu,

  • Julián Arenas,

  1. Professor, Facultad de Ciencias Físicas. Universidad Complutense, Madrid, Spain
  2. Professor, Facultad de Ciencias Físicas. Universidad Complutense, Madrid, Spain

Abstract

Energy use in building air conditioning contributes significantly to power demand; therefore, in this work, we propose an improved methodology to achieve comfort conditions through PID control assistance. The project develops a mathematical model based on analytical heat transfer equations for comfort conditions by fulfilling the Fanger equation, considering environmental parameters (ambient temperature), metabolic rate, and people’s physical activity (internal heat generation) to reduce power consumption and improve energy efficiency. The prediction of building thermal behavior is based on a control system assisted by the PID technique applied to an aerothermal unit that powers the building heating system. We use three methods for heating the building: radiation, forced convection, and radiation-forced convection hybrid method. The combined one provides the best results with higher efficiency among the three methods, reducing the energy use due to a lower heating curve (lower heating power), improving efficiency, and requiring less power from the energy source. Besides, it reduces the heating time to reach the setup temperature inside the building. Theoretical predictions of building temperature match experimental tests run in an inhabited house with accuracy higher than 99%.

Keywords: PID control, mathematical model, building air conditioning, energy efficiency, comfort improvement

[This article belongs to Journal of Refrigeration, Air conditioning, Heating and ventilation ]

How to cite this article:
C. Armenta -Déu, Julián Arenas. Improving Indoor Room Air Conditioning Using PID Control. Journal of Refrigeration, Air conditioning, Heating and ventilation. 2025; 12(01):1-21.
How to cite this URL:
C. Armenta -Déu, Julián Arenas. Improving Indoor Room Air Conditioning Using PID Control. Journal of Refrigeration, Air conditioning, Heating and ventilation. 2025; 12(01):1-21. Available from: https://journals.stmjournals.com/jorachv/article=2025/view=208928


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Regular Issue Subscription Original Research
Volume 12
Issue 01
Received 20/11/2024
Accepted 09/01/2025
Published 20/01/2025
Publication Time 61 Days
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