En esta investigación se realizó el análisis de un modelo matemático para pronosticar el tiempo óptimo del ciclo en una operación de filtración. El objetivo fundamental, fue determinar el efecto que tiene el modelo matemático en el pronóstico del tiempo óptimo. El modelo matemático empleado para la predicción del tiempo óptimo, se generó de una ecuación matemática; que es resultado de la teoría convencional de la filtración con formación de torta a presión variable, que describe la evolución del volumen de filtrado en el tiempo, al cual se aplicó, el criterio de maximizar el volumen total de filtrado después de un tiempo de operación. Para el logro del objetivo, se realizaron pruebas de filtración de suspensiones de tierra diatomea, en una celda de pruebas para esta operación, y en un filtro prensa industrial. Con los datos experimentales de la celda de pruebas,...

This paper expounds the issue about the evolution of the dissolved oxygen concentration in synthetic wastewater with a circular rotary by setting a mathematical model. The mathematical model is based on the Lewis and Whitman relations to transfer oxygen to water, and includes the mechanistic models proposed by Lee, to determine the global oxygen transfer coefficient and the oxygen saturation concentration in water, as a function of the fifth power temperature. For this purpose, historical data from aeration experiments with two types of discs and two levels of COD concentration were compared. The equation allows to include the effect of the variation of the temperature and atmospheric pressure. Finally, through the data obtained, it's concluded that the estimation error is not affected by the type of disc, the COD concentration of the synthetic wastewater or by the interaction of both, a...

The present study aims to comprehensively assess the solar irradiance patterns in the western zone of the Mantaro Valley, a region of ecological and agricultural significance in the central Peruvian Andes. Leveraging radiation data from the Baseline surface Radiation Network (BSRN) sensors located in the Huancayo Geophysical Observatory (HYGO-12.04°S,75.32°W, 3350 masl) spanning from 2017 to 2022, the research delves into the seasonal variations and trends in surface solar irradiance components. Actually, the study investigates the diurnal and seasonal variations of solar irradiance components, namely diffuse (EDF), direct (EDR), and global (EG) irradiance. Results demonstrate distinct peaks and declines across seasons, with EDR and EDF exhibiting opposing seasonal trends, influencing the overall variability in, EG. Peaks of, EG occurred in spring (3.32 MJ m⁻² h⁻¹ at noon), parti...