Now showing items 1-3 of 3

Heat transfer generated in an underground mining environment

Castro Duque, Yesid; GOMEZ HERNANDEZ, JOSE LUIS; Acevedo Peñaloza, Carlos Humberto (Contemporary Engineering SciencesBulgaria, 2018-10-18)

The transfer of heat in an underground environment is due to circumstances, natural and introduced elements. In an underground mine, the heat is generated by the geothermal gradient, the self-compression of the rocks, ...
Heat transfer generated in an underground mining environment

Castro Duque, Yesid; GOMEZ HERNANDEZ, JOSE LUIS ; Acevedo Peñaloza, Carlos Humberto (Contemporary Engineering SciencesBulgaria, 2018-10-18)

The article presents the results of the heat transfer analysis that is generated in an underground environment, specifically in coal mines. The objective is to observe the variability of the results, comparing mines with ...
Utilization of agro-industrial waste to improve thermal behavior of products made of fired clay for traditional masonry

Sanchez Molina, Jorge; Diaz Fuentes, Carmen Xiomara; Colmenares Uribe, Andrea Paola (Journal of Physics: Conference SeriesReino Unido, 2021-08-09)

The reutilization of agro-industrial waste in the manufacture of fired clay products is a sustainable strategy that aims at the circular economy. The most known waste in Norte de Santander, Colombia, are coffee husk and ...

Envíos recientes

Heat transfer generated in an underground mining environment
...
Castro Duque, Yesid | 2018-10-18

The transfer of heat in an underground environment is due to circumstances, natural and introduced elements. In an underground mine, the heat is generated by the geothermal gradient, the self-compression of the rocks, the use of explosives, diesel equipment and human metabolism, etc. Since any or all of them can be heat generators, it is important to control the temperature and humidity in the mines, both to understand the nature of the heat sources and to calculate or estimate the magnitude of the flow of this. (Hartman et al, 1997) [4]. The increase of the temperature in underground environments generates risks, which can cause tragedies in the worst cases. Two main aspects must be taken into account due to the risk generated by high temperatures: one is the affectation to the corporal health of the workers and the other is the impact on the safety and productivity of the mine. (Su et al, 2009) [9]. When humidity and temperatures are high in an underground environment, workers suffer from a feeling of not comfort, generating stress in them, and this in turn leads to an increase in accidents and a decrease in productivity. As the depth increases and the level of mechanization increases, the high temperatures and the damages produced by the heating, are the biggest problems that the mining safety presents, limiting the activity in the coal mines. (Song and Xie, 2011) [8] (Xie, Z., 2012) [11] As a referent, in Table I, the percentage of accidents due to an increase in air temperature is related to gold mines in South Africa. (C. Anguo.2004) [1].

LEER
Heat transfer generated in an underground mining environment
...
Castro Duque, Yesid | 2018-10-18

The article presents the results of the heat transfer analysis that is generated in an underground environment, specifically in coal mines. The objective is to observe the variability of the results, comparing mines with level access and inclined access; Another parameter of comparison has been the variation of the altitude at which the mines are located; The parameters of temperatures, air flow, relative humidity, air density, length of roads, quantity of explosive, number of miners, etc., have been collected in a coal mine located in the city of Cúcuta - Colombia. In order to speed up its use, it has used its own development software, which serves to model comfort and environmental quality underground.

LEER
Utilization of agro-industrial waste to improve thermal behavior of products made of fired clay for traditional masonry
...
Sanchez Molina, Jorge | 2021-08-09

The reutilization of agro-industrial waste in the manufacture of fired clay products is a sustainable strategy that aims at the circular economy. The most known waste in Norte de Santander, Colombia, are coffee husk and rice husk. For this reason, this research studies the thermal impact of their insulating properties in traditional masonry products made of fired clay to be considered as insulating additives. The methodology involves the simulation of heat transfer and heat flux of the multiperforated brick and H10 block manufactured in mixtures of 100% clay and 95% clay and 5% additive to wastes in North Santander, Colombia, in the software ANSYS under the finite element method in extreme conditions of San José de Cúcuta. The results demonstrate that the residues of rice husk and coffee husk act as insulating technological nutrients with a reduction of temperatures of the interior surfaces of the products between 0.22 °C and 0.88 °C, respectively. The reutilization of residual raw materials from alternate construction industries is a sustainable consideration to evaluate new possibilities for the manufacture of products with less embedded energy and, therefore, with a lower carbon footprint than traditional fired clay products.

LEER