Abstract

HERNANDEZ-TOUSET, Juan Pedro; RODRIGUEZ-GONZALEZ, Lisnedys  and  GARCIA-RODRIGUEZ, Agustín. Assessing Opportunities for Energy Conservation in a Paper Machine. RTQ [online]. 2021, vol.41, n.1, pp. 174-192.  Epub Mar 28, 2021. ISSN 2224-6185.

Paper machines consume large amounts of energy and in most cases savings are possible. The drying section in the paper machine has been structurally modified through 60 years of operation, with limited use of the heat recovery system. The objective of the work is to assess the opportunities for energy conservation, through the application of energy management systems in the paper factory.Methodologies are applied for energy balance and heat integration, taking into account the requirements specified by the Cuban standard ISO 50001 for energy management systems in terms of energy review. Pinch analysis is applied using HENSAD and Aspen Energy Analyzer computing resources. The proposed energy performance indicators constitute a reference for the definition of an energy baseline. Energy conservation opportunities are identified with a total annual saving of $ 48,902 that makes it feasible to execute a project of $ 35 546, whose capital cost is estimated to be recovered in 2 years.

Keywords : energy; paper drying; heat integration.

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