Energy Storage Solutions for Enhanced Performance in Off-Grid Solar Systems in Abuja: Nigeria
Ganiyu O. OGUNSIJI, Oluwaseyi O. ALABI*, Timileyin O. AKANDE
DOI: 10.1654/zkdx.2024.29.3-4
Pages: 49-61
Abstract
Over the past decade, there has been a discernible increase in the need for energy, mainly due to the widespread expansion of the industrial sector and population development. Nigeria needs a lot of energy resources to be sustainable because of its large population. As a result, there is now a significant reliance on natural gas and crude oil for energy, which makes us vulnerable to shortages of these supplies. This dependence has negative effects on the country’s economy and climate change. In light of these difficulties and the limited supply of fossil fuels as well as its negative effects on the environment, there is a global movement to use sustainable energy resources and technologies to meet the increased demand for energy. In the field of renewable energy technology, solar photovoltaic (PV) systems have become a viable option. An enduring, sustainable, and environmentally beneficial energy source for the future is offered by these systems, which directly harvest solar radiation from the sun to create electricity. Photovoltaic devices are a suitable sustainable energy alternative because of their ecological and economic advantages. This makes them compatible with international initiatives such as Sustainable Development Goal 7 (SDG-7), which aims to guarantee that everyone has access to modern, affordable, dependable, and sustainable energy. In particular, this study explores whether it would be feasible to install an off-grid photovoltaic system in Abuja, Nigeria, which is located at latitude 9°03’28” N and longitude 7°29’20” E, to meet the electrical needs of a residential building. The inquiry investigates the PV system’s total capacity to meet residential power consumption, using a mathematical modeling methodology for both design and analysis. The results obtained from the use of mathematical modeling methodology indicate that ten MLE275HD2 PV modules, with a capacity of 285 Wp apiece, when combined with five 100 Ah batteries, can effectively handle a requirement for electricity throughout the year of about 3123 kWh.
Keywords
Solar energy, Photovoltaic, Energy, Renewable energy, Solar radiation, PV panels, Peak PV power, Homesteads, Abuja, Nigeria
Comparative Experimental Investigation of Surfactant Performance for Improved oil recovery by unloading the Wells
Najeeb Anjum Soomro*, Ubedullah Ansari, Bilal Shams, Muhammad Khan Memon, Darya Khan Bhutto, Yi Pan, Lei Wang
DOI: 10.1654/zkdx.2024.29.3-3
Pages: 32-48
Abstract
This research paper analyses the potential for surfactants to lessen this frequent industry difficulty by delving into the complicated world of liquid-filled gas wells. The major goal is to clarify the intricacies of liquid buildup from gas wells by making use of sodium dodecyl sulfate’s (SDS) effectiveness as a potent surfactant. SDS emerged as a suitable choice after thorough testing and analysis, demonstrating impressive effectiveness in lowering surface tension and aiding the separation of trapped liquid from the well surface. Research also explores the topic of carrier fluids, looking into how they can improve the efficacy of surfactants. In a significant development, studies have shown that the condensate looks to be a highly efficient carrier fluid due to its compatibility with SDS and its innate capacity to suppress foaming. This special mixture guarantees the surfactant’s ideal dispersion and interaction with the collected liquid, which enhances the unloading procedure.
The study then broadened its reach by outlining and meticulously analyzing various injection techniques. These include the coil injection and annular approaches. Utilizing this multifaceted approach, the study thoroughly evaluated the inherent advantages and disadvantages of each methodology. These evaluations offer very significant information that enables a thorough comprehension of their individual advantages and difficulties. The combined findings of this research make a substantial contribution to our comprehension of the intricate interactions between surfactant, carrier fluid, and various injection strategies.
This thorough understanding, which was developed by combining theoretical knowledge with empirical analysis, should pave the way for the creation of sophisticated solutions to address one of the complex problems—the problem of fluid loading into gas wells.
Keywords
Surfactants, Liquid Loading, Water Loading, Carrier Fluid, Sodium Dodecyl Sulfate (SDS)
Analysis of Large Diameter Bored Monopile under Static Axial Load
Baset M. A., Bahr M. A., Hassan A. A., El-Attar A. N.*
DOI: 10.1654/zkdx.2024.29.3-2
Pages: 17-31
Abstract
Large-diameter monopiles with a diameter exceeding 0.60 m provide optimized foundation solutions for rather heavy structures. Egyptian code practice applies the basic design equations or field data from SPT-N to calculate pile capacity. A case study of a full-scale in-situ pile loading test at the Cairo Monorail project has been carried out and the pile was constructed in dense sand soil. The present study focuses on modeling a field vertical loading test performed on a large 2.0m diameter pile using Plaxis 3D. A modified finite model is proposed in this study for the analysis of pile axial load capacity to investigate the soil-pile behavior in terms of skin friction and end bearing. The vertical load versus settlement curve for the single pile field test is compared with that obtained from the finite element model, showing fair agreement. Parametric studies have been conducted to investigate the optimum length of the pile and its effect on pile capacity. Accordingly, some correlations and appropriate constitutive relationships for an ultimate vertical load of bored large-diameter piles embedded in sandy soil are reported by changing the length (Li) of the pile. Also, the comparison between Chin and ECP methods is presented for estimating the ultimate capacity of the pile. The results show that the accuracy of Chin method is depended on the pile length and testing pile load also, the ultimate capacity of pile demonstrated from Chin method is overestimated by comparing its result by that calculated from ECP method.
Keywords
Monopiles, Large Diameter Pile, Pile Bearing Capacity
The Impact of Oriented Corrugated Web Steel Beams Under Various Loads
Ahmed Almohamady*, Alaa Abdelsalam
DOI: 10.1654/zkdx.2024.29.3-1
Pages: 1-16
Abstract
I-section steel beams are highly used in steel structures, and the point of corrugated beams was had become known recently. In this research, various orientation assemblies of corrugated web steel beams were investigated in order to study the effect of web corrugation on flexure and shear behavior. Ten models of simply supported beams and another eight of cantilever beams were studied by using ANSYS software under concentrated and uniform load. The webs were corrugated and oriented in trapezoidal shape in the direction of web cross-sectional plane. Non-linear finite element analysis was studied, and the results show that the corrugated steel webs in I-section steel beams have a low effect on beam flexural resistance and they can enhance beam shear resistance.
Keywords
Corrugated Web, Finite Element, Moment, Shear, Deflection, FE analysis, Flexure mode shapes; natural frequencies, Steel beam