Prediction of atmospheric corrosion from meteorological parameters: Case of the atmospheric basin of the Costa Rican Western Central Valley
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Rodríguez Yáñez, Javier E.
Rivera Fernández, Erick
Alvarado González, Daniel
Abdalah Hernández, Mariela
Quirós Quirós, Rafael
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Abstract
La evaluación de la corrosión atmosférica se basa actualmente en el estudio de las cuencas atmosféricas
(AB, por sus siglas en inglés). La modelización de la corrosión atmosférica implica en muchos casos la medición de varios parámetros meteorológicos y de contaminación atmosférica, concretamente la temperatura,
la humedad relativa, el cloruro y el dióxido de azufre, lo que hace más complejo el proceso de estimación.
Sin embargo, para el Valle Central Occidental (WCV, por sus siglas en inglés) de Costa Rica, un AB de
baja contaminación, es posible desarrollar modelos simplificados de corrosión atmosférica, basados en un
pequeño número de parámetros atmosféricos. En este trabajo se analizaron las variables meteorológicas de
la región de estudio en cuanto a su dependencia de la altitud y su aplicabilidad en el desarrollo de un modelo
simplificado para predecir la tasa de corrosión (Vcorr). El resultado del modelo de predicción se comparó con
el modelo estándar de la norma ISO 9223:2012, mostrando una mayor habilidad y dando resultados fiables
para un amplio intervalo de altitudes.
The assessment of atmospheric corrosion is currently based on the study of atmospheric basins (AB). Modeling atmospheric corrosion in many cases involves the measurement of several meteorological and atmospheric pollution parameters, specifically temperature, relative humidity, chloride, and sulfur dioxide, making the estimation process more complex. However, for the Western Central Valley (WCV) in Costa Rica, a low-pollution AB, it is possible to develop simplified atmospheric corrosion models based on a small number of atmospheric parameters. In this paper, the meteorological variables of the study region were analyzed in terms of their dependency on altitude and their applicability in the development of a simplified model to predict the corrosion rate (Vcorr). The output of the predictive model was compared with the standard model of ISO 9223:2012, showing a higher skill and giving reliable results for a wide interval of altitudes.
The assessment of atmospheric corrosion is currently based on the study of atmospheric basins (AB). Modeling atmospheric corrosion in many cases involves the measurement of several meteorological and atmospheric pollution parameters, specifically temperature, relative humidity, chloride, and sulfur dioxide, making the estimation process more complex. However, for the Western Central Valley (WCV) in Costa Rica, a low-pollution AB, it is possible to develop simplified atmospheric corrosion models based on a small number of atmospheric parameters. In this paper, the meteorological variables of the study region were analyzed in terms of their dependency on altitude and their applicability in the development of a simplified model to predict the corrosion rate (Vcorr). The output of the predictive model was compared with the standard model of ISO 9223:2012, showing a higher skill and giving reliable results for a wide interval of altitudes.
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Keywords
Atmospheric basin, CORROSION, METEOROLOGICAL DATA, Basic modeling
Citation
https://www.revistascca.unam.mx/atm/index.php/atm/article/view/52966