by Fatemeh Mollaamin

Received: 15 August 2024;  Published: 07 November 2024;  doi: 10.21926/jept.2404019

A comprehensive investigation on hydrogen grabbing by SiO-GeO was carried out, including DFT computations at the CAM-B3LYP-D3/6-311+G (d,p) level of theory. The data shows that if silicon elements are replaced by germanium, the H-grabbing energy will be ameliorated. Electromagnetic and thermodynamic properties of SiO, GeO, and SiO-GeO nanoclusters have been evaluated. The hypothesis of the hydrogen adsorption phenomenon was confirmed by density distributions of PDOS and LOL for hydrated nanoclusters of H-SiO, H-GeO [...]

by Kwami Eli Baba  , Guy Pluvinage  and Julien Capelle

Received: 06 August 2024;  Published: 31 October 2024;  doi: 10.21926/jept.2404018

Ammonia is a toxic gas and can cause tragic consequences for humans. The damage level depends on concentration and duration of exposure. The security length associated with the risk of a tank leak at the acute exposure level of 30 ppm (AEGL-1) has been computed. Two tools have been combined: the CTOA criterion and the ALOHA software. The CTOA, a measure of fracture resistance against ductile crack propagation, is implemented in Abaqus software to compute the size of a breach in a tank submitted to internal pressure [...]

by Maxim Rusakov  and Faraz Farhidi

Received: 11 May 2024;  Published: 20 September 2024;  doi: 10.21926/jept.2403017

This initiative aims to enhance the efficiency of utility demand response (DR) operations by coordinating and integrating behind-the-meter (BTM) photovoltaic systems (PV) and energy storage (ES) using innovative machine learning software applications embedded in a distributed control architecture. The project is in the process of creating distributed energy resource (DER) learning agents and optimization engine within a hierarchical and layered distributed control architecture (DCA). These components work together [...]

by Antonio José Steidle Neto  and Daniela de Carvalho Lopes

Received: 28 April 2024;  Published: 26 August 2024;  doi: 10.21926/jept.2403016

Minas Gerais is the leading milk-producing state in Brazil, and many dairy activities are supplied with electricity by the cable aerial network of the electrical energy state company. Given that the Brazilian energy matrix relies primarily on hydroelectric power, studies on the potential of other renewable energy sources in the context of dairy farms are innovative. Additionally, frequent disturbances and interruptions have motivated the installation of solar energy systems on dairy farms. However, the scarcity of [...]

by Rajesh Karki  and Binamra Adhikari

Received: 02 April 2024;  Published: 07 August 2024;  doi: 10.21926/jept.2403015

The integration of cyber and physical layer of the grid has not only introduced a microscopic spectacle to observe and ensure the efficient flow of electricity but has also exposed the interdependencies of the network. These cyber-physical interdependencies are often exploited in the form of cyber-attacks that can disable a grid introducing substantial financial losses and observable social repercussions. Thus, it is important to address the impending Achilles heel by devising pragmatic approaches to comprehensibly [...]

by Michel Boukar  , Etienne Tchoffo Houdji  , Dimitri Valdes Tchuindjang Kwatchie  , Guy Bertrand Tchaya  and Danwe Raidandi

Received: 25 March 2024;  Published: 01 August 2024;  doi: 10.21926/jept.2403014

Many sensible heat storage materials are regularly used as thermal energy storage (TES) systems to improve the efficiency of solar dryers. The present work focuses on the effects of the volume and particle sizes of a volcanic stone (pozzolan) for the same purpose. Samples soaked in matt black and without soaking were also considered. Heat charge and discharge tests were carried out by exposing the pozzolan contained in a solar collector of the direct solar dryer (DSD) and indirect solar dryer (ISD) to the sun. Char [...]

by Assohoun Fulgence Kraidy  , Islam M. El Radaf  , Andreas Zeinert  , Abdelilah Lahmar  , Aime Pelaiz-Barranco  , Pardis Simon  and Yaovi Gagou

Received: 29 March 2024;  Published: 17 July 2024;  doi: 10.21926/jept.2403013

In this study, -antimony sulfide (SnSb2S5) thin films with 200 nm, 312 nm, and 431 nm thicknesses were successfully fabricated using thermal evaporation. These films' structural, optical, and photoanode properties were meticulously characterized to assess their suitability for photovoltaic applications. X-ray diffraction (XRD) analysis confirmed the presence of an orthorhombic symmetry phase within the Pnma space group, ensuring the crystalline quality of the films. Raman spectroscopy further validated the crystal [...]

by Adrian Krzysztof Antosik  , Karolina Mozelewska  and Marcin Bartkowiak

Received: 29 February 2024;  Published: 13 May 2024;  doi: 10.21926/jept.2402012

The investigation aimed to delve into the intricate relationship between the presence of titanium dioxide and the resulting alterations in the adhesive's behavior under different conditions. The focus extended beyond mere observation to understand how these additives interact with the adhesive matrix, potentially imparting beneficial attributes. Notably, the study delved into the optimization of thermal stability, the extension of the adhesive's functional lifespan, and the mitigation of shrinkage tendencies. This [...]

by Gilbert Ahamer

Received: 07 December 2023;  Published: 13 May 2024;  doi: 10.21926/jept.2402011

The present need for an energy transition in the wake of a global climate catastrophe led to the “EU green deal” which requires a transition of the energy system in all countries. This study aimis survey aims to identify strategies within such an energy transition based on global trend analyses and reports on available technologies for implementation. Based on a literature analysis of over 300 pieces (of feasibility studies and technology implementation reports with a focus on Central Europe) and a statistical anal [...]

by Jesse Tanko Zarmai  , Isaac Ibitoye Alabi  , Ebimene Ezekiel Ebisine  , Musa Tanko Zarmai  and Ovis D. Irefu

Received: 26 September 2023;  Published: 03 April 2024;  doi: 10.21926/jept.2402010

Inadequate electricity supply is a global challenge that needs solutions. This situation has compelled the purchasing of fossil fuel-generating units for use in residential, commercial, and industrial sectors to generate electricity. However, using fossil fuel generating units cause greenhouse gas emissions, bringing about environmental pollution and ultimately resulting in climate change. In particular, educational institutions require adequate and reliable power supply to ensure proper learning and teaching, whic [...]