Accès ouvert
2025
article
OpenAlex
José Daniel Hernández-Vásquez, Elcio Cruz de Oliveira
There is growing concern regarding the environmental and operational safety aspects of fuel. The result of a physicochemical measurement is the outcome of a series of steps that begin with the sampling process. The information obtained from this step and the contribution …
co, br
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Accès ouvert
2023
article
OpenAlex
Cristian Antonio Pedraza Yepes, Kevin Enrique Berdugo-Rolong, Daniel Eduardo Ruiz-Muñoz, Óscar Fabián Higuera Cobos et autres
The conservation of the environment and the use of clean energy is one of the main concerns of international governments. In this sense, encouraging the use of clean energy, both locally, nationally, and internationally, contributes to the development of countries. In this …
co
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2023
article
OpenAlex
Maurício Nogueira Frota, José Daniel Hernández-Vásquez, Rui Pitanga Marques da Silva, Sergio Bragantine Germano et autres
Heat exchangers require periodic maintenance. Offline cleaning scheduled shutdowns are usually needed to restore the exchanger effectiveness, drastically reduced when fouling accumulation occurs. An online real-time alternative for monitoring the effectiveness of exchanger (during a period of eleven months of continuous operation) …
br, co
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Accès ouvert
2023
article
OpenAlex
Karol Yuliete Ravelo-Mendivelso, Mercy Tatiana Villate-Fonseca, José Daniel Hernández-Vásquez, Orlando Miguel Miranda-Samper et autres
The goal of this work is to identify the best alternatives that allow for improving the thermal efficiency of a shell and tube heat exchanger in real operating conditions. The main motivation for carrying out the research is based on the need …
co
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Accès ouvert
2023
article
OpenAlex
José Daniel Hernández-Vásquez, Andrés Leonardo Jutínico-Alarcon, Emanuel Alberto Simanca-Celedon, Alejandro Romero Acuña et autres
This paper compares different methods (Kragten, Guide to the expression of uncertainty in measurement –GUM– and Relative Uncertainty) to evaluate the measurement uncertainty in bimetallic thermometers. The motivation for the development of the
co
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Accès ouvert
2023
article
OpenAlex
José Daniel Hernández-Vásquez, Cristian Antonio Pedraza Yepes, Mauricio Antonio Vitola Galvis, Waldyr Fong-Silva et autres
The goal of this paper is applied the Ordinary Least Squares (OLS) method as a strategy in order to reduce the uncertainty measurement associated to the relevant physical quantities. Methodology or method: This work was motivated due to the efforts made in …
co, mx
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2022
article
OpenAlex
Jefferson Luiz Rangel Rios, Maurício Nogueira Frota, José Daniel Hernández-Vásquez, Carlos Roberto Hall Barbosa
Related to an innovative cleaning device for cleaning hydrogenerator heat exchangers that does not require the interruption of generation (turning off the turbines), this article discusses two alternative schemes to estimate the minimum number of cleaning cycles required to ensure that all …
br, co
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Accès ouvert
2021
article
OpenAlex
José Daniel Hernández-Vásquez, Norberto José Rodríguez-Medina, Albeiro Javier Fernández-Moreno, Cristian Antonio Pedraza Yepes
Objetivo: Diseñar un plan de mantenimiento preventivo para instrumentos no automáticos de pesaje en laboratorios del programa de nutrición y dietética de la Universidad del Atlántico. Metodología: Se realizó el inventario de 29 instrumentos no automáticos de pesaje con sus respectivas características, …
co
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Accès ouvert
2021
article
OpenAlex
Maurício Nogueira Frota, Edgardo R. Castro-Pacheco, José Daniel Hernández-Vásquez, Rui Pitanga Marques da Silva
This article discusses an automated system for monitoring the thermal effectiveness of hydrogenerator heat exchangers (water-air). The proposed calculation methodology eliminates the need to measure the outlet air temperature (the heat exchanger hot working fluid) and allows for continuous monitoring of the …
br, co
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Accès ouvert
2021
article
OpenAlex
José Daniel Hernández-Vásquez, Jhonathan Eduardo Solano De La Rosa, Farid Enrique Ferreira Medina
Objetivo: Evaluar el desempeño de tecnologías para la generación de energía eléctrica a partir de fuentes renovables en la costa caribe colombiana utilizando el modelo multicriterio AHP-TOPSIS. Metodología o método: La motivación para el desarrollo de este tema se fundamenta en la …
co
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Accès ouvert
2020
data-paper
OpenAlex
Germán Roca-Gómez, Ulises Ospino-López, Cristian Antonio Pedraza Yepes, Óscar Fabián Higuera Cobos et autres
This research was motivated by technical-economic challenges imposed by mass metrology, specifically, in matters concerning calibration methods of non-automatic type weighing instruments (i.e.: digital scales). In order to contextualize the problem detected, in the industry there are different processes of mass measurement …
co
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Accès ouvert
2020
article
OpenAlex
José Daniel Hernández-Vásquez, Cristian Antonio Pedraza Yepes, Luis Enrique Malkún Tobón, Carlos Guillermo Rapalino Gutiérrez et autres
Esta investigación fue motivada por desafíos técnicos-económicos impuestos por la metrología de masa, en particular, en temas concernientes a métodos de calibración de los instrumentos no automáticos de pesaje (i.e.: balanzas). En el mundo contemporáneo resulta un factor vital garantizar la confiabilidad …
co, mx
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