Browsing by Author "Masip, Yunesky"

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    Parameterization proposal to determine the feasibility of geographic areas for the green hydrogen industry under socio-environmental and technical constraints in Chile
    (2024) San Martin, Marco; Poch, Paola; Carmona, Roberto; Rodriguez, Pablo; Rodriguez, Angel; Serafini, Daniel; Garrido, Rene; Mena, Marcelo; Valdes, Javier; Masip, Yunesky
    Chile, abundant in solar and wind energy resources, presents significant potential for the production of green hydrogen, a promising renewable energy vector. However, realizing this potential requires an understanding of the most suitable locations for the installation of green hydrogen industries. This study proposes a quantitative methodology that identifies and ranks potential public lands for industrial use, based on a range of technical parameters (such as solar and wind availability) and socio-environmental considerations (including land use restrictions and population density). The results reveal optimal locations that can facilitate informed, sustainable decision-making for large-scale green hydrogen implementation in Chile. While this methodology does not replace project specific technical or environmental impact studies, it provides a flexible, general classification to guide initial site selection. Notably, this approach can be applied to other regions worldwide with abundant solar and wind resources, such as Australia and Northern Africa,
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    Prediction of the temperature-time history in ordinary bodies induced by surface heat flux utilizing the enhanced method of discretization in time and the finite difference method
    (2023) Campo, Antonio; Celentano, Diego; Masip, Yunesky
    PurposeThe purpose of this paper is to address unsteady heat conduction in two subsets of ordinary bodies. One subset consists of a large plane wall, a long cylinder and a sphere in one dimension. The other subset consists of a short cylinder and a large rectangular bar in two dimensions. The prevalent assumptions in the two subsets are: constant initial temperature, uniform surface heat flux and thermo-physical properties invariant with temperature. The engineering applications of the unsteady heat conduction deal with the determination of temperature-time histories in the two subsets using electric resistance heating, radiative heating and fire pool heating. Design/methodology/approachTo this end, a novel numerical procedure named the enhanced method of discretization in time (EMDT) transforms the linear one-dimensional unsteady, heat conduction equations with non-homogeneous boundary conditions into equivalent nonlinear "quasi-steady" heat conduction equations having the time variable embedded as a time parameter. The equivalent nonlinear "quasi-steady" heat conduction equations are solved with a finite difference method. FindingsBased on the numerical computations, it is demonstrated that the approximate temperature-time histories in the simple subset of ordinary bodies (large plane wall, long cylinder and sphere) exhibit a perfect matching over the entire time domain 0 < t < infinity when compared against the rigorous exact temperature-time histories expressed by classical infinite series. Furthermore, using the method of superposition of solutions in the convoluted subset (short cylinder and large rectangular crossbar), the same level of agreement in the approximate temperature-time histories in the simple subset of ordinary bodies is evident. Originality/valueThe performance of the proposed EMDT coupled with a finite difference method is exhaustively assessed in the solution of the unsteady, one-dimensional heat conduction equations with prescribed surface heat flux for: a subset of one-dimensional bodies (plane wall, long cylinder and spheres) and a subset of two-dimensional bodies (short cylinder and large rectangular bar).