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Open Access

ISSN 2690-1692

© 2021 by the authors; CC BY 4.0 licence

Journal of Energy and Power Technology , Volume 3 , Issue 4 (2021)

Pages: 143

Published: March 2022

(This book is a printed edition that was published in Journal of Energy and Power Technology)

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Cover Story: To characterize subsurface wettability during geologic carbon storage, an in-situ contact angle system produced 1139 measurements under three CO2 phase conditions on 20 different rocks of various CO2 storage depositional environments. Contact angle measurements provide important input parameters for reservoir simulation tools that predict the stability of geologic CO2 storage. View this paper.

Volume 3,Issue 4

Open Access Research Article

Harvesting the Potential of CO2 before it is Injected into Geological Reservoirs

Received: 28 October 2021;  Published: 22 December 2021;  doi: 10.21926/jept.2104050

Abstract

To store CO2 in geological reservoirs, expansion valves have been used to intentionally release supercritical CO2 from high-pressure containers at a source point to lower-pressure pipelines and transport to a selected injection site. Using expansion valves, however, has some shortcomings: (i) the fluid potential, in the form of kinetic ener [...]

Open Access Review

Potential of Coupling Heavy Metal (HM) Phytoremediation by Bioenergy Plants and Their Associated HM-Adapted Rhizosphere Microbiota (Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Microbes) for Bioenergy Production

Received: 22 July 2021;  Published: 14 December 2021;  doi: 10.21926/jept.2104049

Abstract

There is growing concern for the contamination of our soils and waters worldwide with heavy metals (HMs), as a result of indiscriminate use of agrochemicals for feeding growing population which require optimal use of resources and sustainable agricultural strategies. This can be simultaneously achieved by using microbes as bio-fertilizers, bio-protectants, and bio-stimulants, and suitable phytoremediation- plant capable of removing heavy metals contaminants from contaminated sites. T [...]

Open Access Research Article

The Drag Forces on a Taylor Bubble Rising Steadily in Vertical Pipes

Received: 04 October 2021;  Published: 07 December 2021;  doi: 10.21926/jept.2104048

Abstract

By the adoption of a drag-buoyancy equality model, analytical solutions were obtained for the drag coefficients (CD) of Taylor bubbles rising steadily in pipes. The obtained solutions were functions of the geometry of the Taylor bubble and the gas volume fraction. The solutions were applicable at a wide range of Capillary numbers. The solution was validated by comparison with experimental data of other investiga [...]

Open Access Original Research

Effect of Mineral Additives on Fusion Behavior of Agricultural Residue Ashes during Combustion or Co-combustion with Lignite

Received: 06 September 2021;  Published: 11 November 2021;  doi: 10.21926/jept.2104047

Abstract

In this work, the conducted chemical, mineralogical, fusibility, and thermogravimetric analyses and calculated the slagging/fouling indicators for predicting deposition tendencies in boilers to study the ash fusibility behavior of selected agricultural residues and their blends with lignite. Two additives, bauxite, and clinochlore, were used at varying amounts to reduce ash melting, followed by examining their anti-fusion mechanisms. Initial deformation and softening temperatures of [...]

Open Access Research Article

Variation of CO2-Brine Contact Angles on Natural Rocks of Different Compositions

Received: 05 September 2021;  Published: 05 November 2021;  doi: 10.21926/jept.2104046

Abstract

Contact angles were measured for CO2-brine interactions on 20 different rocks that represent the properties of various CO2 storage depositional environments to characterize the wettability during geologic carbon storage. Three different CO2 phases (gaseous, liquid, and supercritical) were considered to investigate the effect of pressure and temperature. Bubbles were studied in two groups of larger and smaller than 5 [...]

Open Access Original Research

Hydrogen Storage in Cryogenic, Cybernetic, and Catalytic Vessels for Transport Vehicles

Received: 18 June 2021;  Published: 29 October 2021;  doi: 10.21926/jept.2104045

Abstract

Most of the hydrogen storage vessels meant for vehicles to run the electric motor via a fuel cell during transport are designed for drives of only a few tenths of kilometers per day. The present report, however, describes a vessel model that is conceived to hold the hydrogen energy only for short periods during transport, such as a few hours. This would include transport via a light-duty vehicle, a taxi, or a bus, which would load liquid hydrogen at a station every morning for the da [...]

Open Access Original Research

Advances in Wind Farm Layout Optimization: Wind Direction Robustness and Wake Induced Asymmetric Thrust Load

Received: 20 July 2021;  Published: 25 October 2021;  doi: 10.21926/jept.2104044

Abstract

In this study, we address the wind farm layout optimization (WFLO) problem and tackle the issue of optimal turbine placement by incorporating additional aspects of an economically driven target function. Firstly, we have analyzed the effect of wind direction on a given turbine arrangement. Based on the direction-dependent wake pattern, practitioners sometimes shut down certain turbines on their farms. Our method computes which turbines should be shut down in which wake situation. On [...]
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