Athenea Engineering sciences journal

Statistical analysis in engineering practices

Mon, 25 Mar 2024 23:02:10 +0000

In this project, an engineering experiment was conducted utilizing measurements to estimate gravity analytically and graphically. This experimental approach aims to demonstrate the usefulness of engineering principles in verifying Earth's gravity values. Statistical methods were employed to enhance
comprehension of the underlying concepts and ensure precise error estimation. The principal findings suggest that this engineering practice is an effective tool for evaluating gravity, with descriptive statistical analysis playing a pivotal role in presenting dependable and precise data.

Study of the location for the installation of a photovoltaic plant for the generation of electric power in Puerto Rico

Luz Elena Maldonado Alviarez, Jose Luciano Maldonado — Tue, 26 Mar 2024 00:13:08 +0000

The description of the geographical location study of a photovoltaic plant to be constructed in the coming years in Puerto Rico is presented as part of a major project the island has embarked upon to enhance its electrical service. This study entailed selecting the terrain based on its topography, as well as assessing the convenience of its location concerning its proximity to the national electrical interconnection system. Additionally, relevant consultations were conducted regarding the rights over the lands that will be affected by the construction of the photovoltaic plant (easements). As a result of this study, a plot of land spanning 131.56 hectares in the Juana Díaz sector, 1.59 kilometers from the electrical interconnected system, was identified as a suitable location, impacting only five easements.

Novel methodology for characterization of thermoelectric modules and materials

Ronald Pirela, Sergio Velasquez — Tue, 26 Mar 2024 00:57:31 +0000

The document presents an innovative methodology that combines forced response and natural response theories in thermoelectric materials and devices. It stands out for expressing the thermoelectric figure of merit in terms of the ratio of two temperatures ???????? = Δ????′⁄Δ????, enabling comprehensive testing and precise characterization of thermoelectric modules and materials, including measurements of thermal conductance, electrical resistance, Seebeck coefficient, and figure of merit. Additionally, it addresses the determination of thermal resistances and thermal capacitances related to thermal contacts, as well as the derivation of characteristic time constants and angular frequencies. This approach, applicable to both modular devices and individual samples, allows for the simultaneous measurement of all parameters on a single sample. The experiments considered non-ideal contacts and non-adiabatic conditions at room temperature ???? = 300????, enhancing the feasibility of in-situ characterization and positioning this methodology as a key tool in thermoelectric research.