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Introduction: Several factors are identified in the raw sugar mill that increase energy consumption and introduce technical, economic and environmental risks Objective: To evaluate the energy system through the application of energy management systems. Materials and Methods: The energy review included the application of traditional methodologies for the thermoenergetic balance and the use of Sistema Termo Azúcar 4.1 software according to the Cuban Standard ISO 50001. Results and Discussion: An energy baseline is established, which allows the industry in a comparative way assess energy performance of the process. Conclusions: The use of STA 4.1 software in the studied industry constituted a useful, practical and reliable tool for analyzing the energy system. High level of technology obsolescence and poor condition of thermal insulation constitute the main technology deficiencies of industry. The economic benefits obtained with the modification of generation and cogeneration system and thermal insulation rehabilitation justify the proposal of three investment projects that contribute to increase the efficiency in energy use, whose recover investment is estimated in 3 years. [ABSTRACT FROM AUTHOR]

Introduction: In this work, based on the necessary technological linkage that exists in a raw sugar factory with a nearby sugar refinery, a strategy is proposed to strengthen its material and energy linkage in its development, extracting the juice from the filters. Objective: To evaluate the impact of extracting the juice from the filters on the influence on the quality of raw sugar, determining the optimal percentage of extraction to achieve the energy linkage of the combined raw sugar factory, refinery and torula cream. Materials and methods: The effect of the extraction of the juice from the filters on the quality of this type of sugar, and with it on that of refined sugar, is evaluated through the statistical modeling of the process through the aggregation of the models of the component elements, considering variations of the models in the purification stage for different per hundreds of extraction. Results and discussion: The global models of the process obtained through the aggregation of models of the partial stages are effective for predicting the sugar quality parameters. The extraction of the juice from the filters significantly increases the amount of leftover bagasse in the production of raw sugar. Conclusions: The extraction of the juice from the filters benefits the quality parameters of the produced sugar and significantly increases the amount of excess bagasse in the production of raw sugar, being an alternative to contribute to other productive demands. [ABSTRACT FROM AUTHOR]