Abstract
Modeling energy systems is important to generate a range of insights and analyses to improve energy efficiency. However, some details are missing in most end‐use models for industrial systems, which has a profound effect on energy modeling for petrochemical plants. In an enterprise-wide optimization conducted in a petrochemical plant, the unit’s utility consumptions were modeled and some energy efficiency improvements were observed but with seasonality behaviors that were not appropriately represented and explained. The objective of this study was to obtain a relationship between energy efficiency gains with energy market cost (PLD), electricity demand, room temperature and plant load using the following methods: LRM, ARIMA, and Data Mining, comparing their performance in terms of accuracy and easy-of-use. LRM, despite being more used in the literature, was not applicable, ARIMA had a 67.9% goodness-of-fit, and Data Mining had the best results, with 82.8% and 98.8% goodness-of-fits using the M5P and RandomTree algorithms, respectively. In terms of data visualization, Data Mining is easy with the M5P algorithm, but the RandomTree algorithm has a very extensive regression tree, with 975 rows. The approach can support the organizations to empowerment these employees seeking to handle, store, and analyze all the data available on the company. At the end, the best approach to modelling and better understanding the energy efficiency improvements in a utilities supply on a petrochemical plant was stated as a M5P and its framework can be used to support the decision makers.
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The database used in the study results can be found at the Electronic Supplementary material.
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The codes of the algorithms used can be found at the Weka Software: https://www.cs.waikato.ac.nz/ml/weka/.
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DMS designed the study, performed the experiments and wrote the manuscript; DAC review the manuscript and advise the study; SRL was the co-advisor.
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de Santana, D.M., Lourenço, S.R. & Cassiano, D.A. Data mining approach for energy efficiency improvements in a utilities supply on a petrochemical plant. Evolving Systems 14, 1071–1081 (2023). https://doi.org/10.1007/s12530-023-09515-y
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DOI: https://doi.org/10.1007/s12530-023-09515-y