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LSTM-based indoor air temperature prediction framework for HVAC systems in smart buildings

Abstract

Accurate indoor air temperature (IAT) predictions for heating, ventilation, and air conditioning (HVAC) systems are challenging, especially for multi-zone building and for different HVAC system types. Moreover, the nonlinearity of the buildings thermal dynamics makes the IAT prediction more difficult since it is affected by complex factors such as controlled and uncontrolled points, outside weather conditions and occupancy schedule. This paper presents a long short-term memory (LSTM) model to predict IAT for multi-zone building based on direct multi-step prediction with sequence-to-sequence approach. Two strategies, LSTM-MISO and LSTM-MIMO, are built for multi-input single-output and multi-input multi-output, respectively. The performance of these two strategies has been evaluated based on two case studies on real smart buildings using variable air volume (VAV) and constant air volume (CAV) systems. For both buildings, experimental results showed that the LSTM models outperform multilayer perceptron models by reducing the prediction error by 50%.

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Acknowledgements

This work is supported by Mitacs Accelerate program and BrainBox AI.

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Correspondence to Fatma Mtibaa.

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Mtibaa, F., Nguyen, KK., Azam, M. et al. LSTM-based indoor air temperature prediction framework for HVAC systems in smart buildings. Neural Comput & Applic 32, 17569–17585 (2020). https://doi.org/10.1007/s00521-020-04926-3

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  • DOI: https://doi.org/10.1007/s00521-020-04926-3

Keywords

  • HVAC
  • LSTM
  • Sequence-to-sequence
  • Multi-step ahead predictions
  • VAV
  • CAV