Resumo

ALBERTO, García Vázquez, Carlos  e  ISABEL, González Santos, Ana. Obtaining and Validating of Differential Pressure Models in the Impulse Section of an Air Handling Unit. Rev Politéc. (Quito) [online]. 2022, vol.50, n.2, pp.39-54. ISSN 2477-8990.

Abstract: This article addresses the problem of identifying differential pressure in an air handling unit (AHU), with special emphasis on the validation of the obtained models. Despite of the fact that many authors focus only on the variables: temperature and humidity, due to the proven energy savings of the application of several advanced control strategies for these variables, other researches show energy savings opportunities from air flow control. All those works have as common denominator the use of models, both in the design and in the evaluation of the proposed control strategies. The work presented here highlights the aspects considered during the application of the system identification methodology in the studied process. Some of the main difficulties involved in applying it in a real case of the industry are exposed and variants are proposed to, despite them, obtain models that satisfy the expectation of its future users. In the validation step, in addition to tests typically done in the practice of system identification, other analysis on the obtained models are recommended, given the stochastic variability of differential pressure variable.

Palavras-chave : System identification; Differential pressure; Air handling unit; Validation.

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